Difference between revisions of "Template:Convert"

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<includeonly>{{#ifeq:{{{sortable|}}}|on|<span style="display:none">{{padleft:{{FORMATNUM:{{{1}}}|R}}|16|0}}</span>}}{{convert/{{#if:1|{{{2}}}}}|{{FORMATNUM:{{{1}}}|R}}|{{#ifeq:{{#expr:{{{3|0}}}*0}}|0|0}}|{{{3|}}}|{{{4|}}}|{{{5|}}}|{{{6|}}}|r={{#ifeq:{{{sp}}}|us|er|re}}|d=L{{{lk|off}}}A{{{abbr|off}}}D{{{disp|b}}}S{{{adj|{{{sing|off}}}}}}|s={{{sigfig|}}}}}</includeonly><noinclude>{{Documentation}}</noinclude>
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<includeonly>{{convert/{{{2}}}|{{{1}}}|{{#ifeq:{{#expr:{{{3|0}}}*0}}|0|0}}|{{{3|}}}|{{{4|}}}|{{{5|}}}|{{{6|}}}|r={{#ifeq:{{{sp}}}|us|er|re}}|d=L{{{lk|off}}}A{{{abbr|off}}}D{{{disp|b}}}S{{{adj|{{{sing|off}}}}}}|s={{{sigfig|}}}}}</includeonly><noinclude>{{esoteric}}
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{{documentation}}</noinclude>

Revision as of 20:19, 21 April 2009

40x40px This template employs intricate features of template syntax.
You are encouraged to familiarise yourself with its setup and parser functions before editing the template. If your edit causes unexpected problems, please undo it quickly, as this template may appear on a large number of pages.
Remember that you can conduct experiments, and should test all improvements, in either the general Template sandbox or your user space before changing anything here.

[edit]

Documentation
This documentation is transcluded from Template:Convert/doc. (view | edit | history)
40x40px This template employs intricate features of template syntax.
You are encouraged to familiarise yourself with its setup and parser functions before editing the template. If your edit causes unexpected problems, please undo it quickly, as this template may appear on a large number of pages.
Remember that you can conduct experiments, and should test all improvements, in either the general Template sandbox or your user space before changing anything here.
Notice

{{Convert}} no longer accepts kt as code for the knot. The code kt will be reassigned for the kilotonne. Please use kn instead. Sorry for any inconvenience. The codes sqm and sqkm have also been removed. Use m2 and km2.

Usage

This template can be used to show measurement quantities as primary and converted secondary units (or ranges), with optional rounding, wikilinks, abbreviation, or US spellings, and various separators including:  parentheses (round brackets), slash, "or", hyphens, comma, "to" or dashes. Styles include: distance "32 metres (105 ft)" and "32 metres or 105 feet"; temperature "18 °C (64 °F)" or "18 °C (64 °F)*"; weight "55.0 kg (121.3 lb)" or "65 to 80 kg (143 to 176 lb)"; etc. For units see: Convert/list of units.

Options include:  lk=in, abbr=on, sp=us, adj=on, adj=mid, disp=or, disp=table and sortable=on (explained below). By default, output is rounded to match the precision of input; alternatives include: sigfig=3 or using the end parameter, e.g. appending -2 to show full hundreds.

Single value: 

{{convert|original_value|original_unit|conversion_unit|round_to|...}}

Range of values (see below for list of range options): 

{{convert|orig_val1|range|orig_val2|original_unit|conversion_unit|round_to|...}}
  • Numbers must be entered in unformatted form (without commas). For negative numbers (i.e. temperatures or precision) use a hyphen as the minus sign for the input number. Values output by the template will be displayed formatted and with a true minus sign where appropriate. To specify with commas, re-code a number as {{formatnum:9,000,500|R}} (becomes 9000500).
  • Optional parameters, in examples below, allow abbreviated units (abbr=on), or US spellings (sp=us for meter), or slash separation (disp=s), or hyphenation (adj=on), etc.
  • For this template many levels of substitution are possible, hence doing this fully, step by step, is cumbersome. Use Special:ExpandTemplates instead.
  • The template has no in-built capacity for dimensional analysis. It is therefore up to the user to ensure that the input and output units are compatible. Do not, for example, attempt to convert barrels to tonnes (but see {{bbl to t}}). Also beware of units with similar names; the code oz, for example, is for the avoirdupois ounce (a unit of mass), do not use this if you want fluid ounces.
  • An attempt to convert a unit to itself (e.g. km to km), will result in a template loop.
  • The range functionality is not fully implemented for all units, so experimentation may be required.
  • This documentation page tends to lag behind in terms of what the template can do. For details see the talk page and its archives.

Examples

Single value

Input Displays as
{{convert|3.21|kg|lb}} 3.21 kilograms (7.1 lb)
{{convert|3.21|kg|lb|0}} 3.21 kilograms (7 lb)
{{convert|10|kg |lb |disp=or}} 10 kilograms or 22 pounds
{{convert|6|ft|5|in|m}} 6 feet 5 inches (1.96 m)
{{convert|10|mi}} 10 miles (16 km)
{{convert|100|mpgus}} 100 miles per US gallon (2.4 L/100 km; 120 mpg‑imp)
{{convert|120|km/h}} 120 kilometres per hour (75 mph)
{{convert|18|°C|°F}} 18 °C (64 °F)
{{convert|1250|sqft|m2|lk=in|sigfig=2}} 1,250 square feet (120 m2)
Note 'lk=in' links only the input unit. This example is for illustration only, common units of measurement should not be linked. See: wp:overlink.
{{convert|20.5|m3|cuyd|lk=out|abbr=on}} 20.5 m3 (26.8 cu yd)
Note 'lk=out' links only the output unit, cu yd.
{{convert|641|acre|km2 sqmi|lk=on}} 641 acres (2.59 km2; 1.002 sq mi)
Note 'lk=on' links all units. Per guidelines, common units should not be linked. See: wp:overlink.
{{convert|641|acre|km2 sqmi|2|lk=on}} 641 acres (2.59 km2; 1.00 sq mi)
Although 640 acres equals 1 square mile; 641 acres rounded to two decimal places equals 1.00 sq mi.

Range of values

Note: not yet operational for all units
Input Displays as
{{convert|60|and|170|kg|lb}} 60 and 170 kilograms (130 and 370 lb)
{{convert|60|to|170|kg|lb}} 60 to 170 kilograms (130 to 370 lb)
{{convert|60|to(-)|170|kg|lb}} 60 to 170 kilograms (130–370 lb)
{{convert|60|-|170|kg|lb}} 60–170 kilograms (130–370 lb)
{{convert|41|to|50|F|C}} 41 to 50 °F (5 to 10 °C)
{{convert|41|-|50 |F|K}} 41–50 °F (278–283 K)
{{convert|60|x|120|m|ft}} 60 by 120 metres (200 ft × 390 ft)
{{convert|60|+/-|10|m|ft}} 60 ± 10 metres (197 ± 33 ft)
{{convert|19|to|27|L|USgal}} 19 to 27 litres (5.0 to 7.1 US gal)
{{convert|5|to|7|L|USgal|abbr=mos}} 5 to 7 litres (1.3 to 1.8 US gal)*
{{convert|4|-|9|L|USgal|abbr=none}} 4–9 litres (1.1–2.4 US gallons)

The following conversions are currently not available as a range of values:

  • Some imperial and US gallon-based units
  • Fuel consumption units (mpg, L/100km)
  • Large scale units (e3, e6, e9)
  • Combination-based units (ft&in, st&lb, lb&oz) due to complexity of the conversion

Parameters

Parameters
Use US spelling attach |sp=us
Make units wikilinked attach |lk=on   to link all units                               (default: lk=off)
attach |lk=in   to link only the input units
attach |lk=out  to link only the output units
(The manual of style suggests that you should not link common units of measurement).
Use the adjective form, or insert mid-text words attach |adj=on (e.g. "The 190-foot (58 m) bridge" as opposed to "The 190 feet..."). This produces the adjective form—the unit name in the singular with a hyphen (according to the Manual of Style).
attach |adj=mid (e.g. "The 190-foot bridge (58 m)" as: |adj=mid|bridge, or "The 190-foot-long bridge (58 m)" as: |adj=mid|-long bridge)
         Any rounding-parameter should follow the mid-text: "text|0".
Abbreviate units, or not attach |abbr=on       to show unit symbols          (default: abbr=off)
attach |abbr=none   to show all unit names in full words
attach |abbr=in       to abbreviate input units
attach |abbr=out     to abbreviate output units
attach |abbr=values    to suppress unit names & show only values. So, {{convert|6|mi|abbr=values}} gives: 6 (9.7).
Change "( )" to display other separators attach |disp=comma    to put comma, not brackets/parentheses
attach |disp=or          to put "or" between units
attach |disp=s (or |disp=/) for slash (e.g. 190 foot/58 metre). The default value is:  disp=b for brackets/parentheses.
Change "( )" to customized separators attach |disp=x| (begin | end)     to show "xx (begin yy end)"
attach |disp=x|;                               to show "xx; yy"
attach |disp=x| (same as |)         to show "xx (same as yy)".
Display output only attach |disp=output only                   to show result number & unit
attach |disp=output number only     to show just number
Note when using "disp=output only" then the unit name can still be shown as full words by abbr=none, or linked by lk=on.
Display units inverted as reverse order attach |disp=flip        to reverse the order & show output unit first
So, {{convert|6|km|disp=flip}} shows "3.2 mi (6 kilometres)".
To get symbol "km" use abbr=in, to abbreviate the input unit.
Display unit name (only) attach |disp=unit         to show the unit name for a symbol
The unit name will be plural when the amount is not 1, or hyphenated when adj=on. So, {{convert|2|cuyd|disp=unit}} shows "cubic yards" plural.
Display amounts as table cells attach |disp=table (or |disp=tablecen) Note: For use in tables, the template must start on a new line after a pipe. Only the number will be displayed unless you set |abbr=on, |lk=on, |lk=in or |lk=out. Example: here
Round to a specified number of significant figures attach |sigfig={some non-negative integer}. In the case of temperatures Celsius or Fahrenheit this refers to the difference with the absolute-zero temperature. For example, at room temperature two significant digits means rounded to tens of degrees.
Round by 5 attach |disp=5  to round the output amount to the nearest 5 units. Not supported for all options.
Let Convert decide the unit to convert to put zero (0) or skip the convert to parameter (the 3rd unnamed parameter) e.g. {{convert|100|mi|0}} gives 100 miles (161 km).
Display input value with a fraction {{convert|3/8|in|mm|3|abbr=on}}→ 3⁄8 in (9.525 mm) or {{convert|11+1/4|in|cm|2|abbr=on}}→11 1⁄4 in (28.58 cm)

For negative amounts, use 2 minus signs: -11-1/4.

Generate a hidden sort key for use with a sortable table attach |sortable=on to generate a hidden sort key (in the form of <span style="display:none">00000005</span>) so that sortable tables will sort correctly. This takes the first numeric value and left pads it with zeros to 16 places. It ignores any additional values, ie, if you use 6|ft|2|in as the value, it will only use the 6 for the sort key. This will cause numeric values to sort in numeric order, ie: 5, 10, 15 instead of 10, 15, 5.

Parameters still under construction

Parameters still under construction. May not work in all situations
Round by 5 attach |disp=5  to round output to nearest 5 units. Might not work when linking unit names.
disp=tablecen Similar to disp=table except that the values with be centered within the column. See the tables at La Nouvelle branch, BM-21 Grad for in use examples.
disp=comma Similar to disp=s except the two values will be separated by a comma, for situations where the first value is already within parentheses. See the Geography tables on Labrador for an example.
abbr=in Abbreviates only the input unit.
abbr=out Abbreviates only the output unit.
abbr=comma Abbreviates (removes) commas. This is a limited, temporary option, until comma=off can be implemented. For ranges, using abbr=comma conflicts with internal options, so instead, append "nocomma" to a range-word: tonocomma, bynocomma, andnocomma, -nocomma & xnocomma.
abbr=mos For ranges, abbreviates with the input unit repeated, twice. Not to be confused with the specifications at MOS:NUM#Conventions.

Rounding

Convert supports four types of rounding:

Rounding to a given precision
Specify the desired precision with the fourth unnamed parameter (or third unnamed parameter if the "convert to" parameter is omitted; or fifth unnamed parameter if a range is specified; or fourth unnamed parameter again if a range is specified and the "convert to" parameter is omitted; needs to be replaced with a "precision" named parameter). The conversion is rounded off to the nearest power of 1/10 this number. For instance, if the result is 8621 and the round number is '-2', the result will be 8600. If the result is '234.0283043' and the round number is '0', the result will be 234.
Rounding to a given number of significant figures
Specify the desired number of significant figures using |sigfig={some non-negative integer} as noted above.
Combine both of the above
If both the desired precision and the desired number of significant figures are specified, the conversion will be rounded to the least precise of these.
Default rounding
If neither the desired precision nor the desired number of significant figures are specified, the conversion will be rounded either to a comparable precision as the input value (the number of digits after the decimal point—or the negative of the number of non-significant zeroes before the point—is increased by one if the conversion is a multiplication by a number between 0.02 and 0.2, remains the same if the factor is between 0.2 and 2, is decreased by 1 if it is between 2 and 20, and so on) or to two significant figures, whichever is the most precise. An exception to this is temperature wherein the conversion will be rounded either to precision comparable to that of the input value or to that which would give three significant figures when expressed in kelvins, whichever is the most precise.

Units supported

See also: Convert/list of units

The table below lists units supported by this template. It is divided up according to the quantity being measured. Not all supported units are listed here; there are links to complete lists for each quantity.

The codes listed in the code column (column 3) are accepted as input by the template. These can be used as the second or third unnamed parameter. For some units there exist alternative codes. These are listed in brackets and have been incorporated to make the code more flexible for editors, e.g. °F or F may be entered.

The codes listed in the combinations column (column 7) can be used to produce multiple conversions. They can only be used as the third unnamed parameter, e.g. {{convert|55|nmi|km mi}} produces "55 nautical miles (102 km; 63 mi)".

Abridged list of units supported by {{Convert}}
Explanation
system unit code
(alternative) 		symbol/abbreviation notes conversion factor combinations
the system(s) to which the unit belongs units listed by name codes that can be entered when using the template symbols/abbreviations as displayed by the template notes which may pertain to the units in general or specifically to their use in this template conversion factors used by the template to convert to and from the SI base unit codes for multiple conversions


LENGTH
(Full list)
system unit code
(alternative) 		abbreviation notes conversion factor/m combinations
SI megametre Mm Mm US spelling: megameter
 1,000,000
kilometre km km US spelling: kilometer
 1,000
  • km mi
metre m m US spelling: meter
 1
  • m ft
  • m ftin
centimetre cm cm US spelling: centimeter
 0.01
  • cm in
millimetre mm mm US spelling: millimeter
 0.001
  • mm in
micrometre μm (um) µm US spelling: micrometer
 0.000001
nanometre nm nm US spelling: nanometer
 0.000000001
non-SI metric ångström Å
(angstrom) 		Å 0.0000000001
Imperial
&
US customary 		mile mi mi 1,609.344
  • mi km
furlong furlong 201.168
chain chain 20.1168
rod rd rd For other names of this unit see the full list. 5.0292
fathom fathom assumes 1 fathom ≡ 6 ft 1.8288
yard yd yd assumes the international definition 0.9144
foot ft (foot) ft The foot code will produce foot as the plural form. 0.3048
  • ft m (foot m)
hand hand h 0.1016
inch in in 0.0254
  • in cm
  • in mm
Other nautical mile nmi nmi the international standard nautical mile
For other nautical miles see the full list. 		1,852
parsec pc pc 3.0856775814672×10^16
light-year ly ly 9.4607304725808×10^15
astronomical unit AU AU 149,597,870,700


AREA
(Full list)
system unit code
(alternative) 		abbreviation notes conversion factor/m2 combinations
SI square kilometre km2 km2 US spelling: square kilometer
 1,000,000
  • km2 sqmi
square metre m2 m2 US spelling: square meter
 1
  • m2 sqft
square centimetre cm2 cm2 US spelling: square centimeter
 0.0001
  • cm2 sqin
square millimetre mm2 mm² US spelling: square millimeter
 0.000001
  • mm2 sqin
non-SI metric hectare ha ha 10,000
Imperial
&
US customary 		square mile sqmi sq mi 2,589,988.110336
  • sqmi km2
acre acre 4,046.856422
square yard sqyd sq yd 0.83612736
square foot sqft
(sqfoot) 		sq ft The sqfoot code will produce square foot as the plural form. 0.09290304
  • sqft m2 (sqfoot m2)
square inch sqin sq in 0.00064516
  • sqin cm2
Other square nautical mile sqnmi sq nmi 3,429,904
dunam dunam For alternative spellings and definitions see the full list 1,000
tsubo tsubo (400/121)


VOLUME
(Full list)
system unit code
(alternative) 		abbreviation notes conversion factor/m3 combinations
SI cubic metre m3 m3 US spelling: cubic meter
one kilolitre 		1
cubic centimetre cm3 cm3 US spelling: cubic centimeter
one millilitre 		0.000001
cc cc
cubic millimetre mm3 mm³ US spelling: cubic millimeter
 0.000000001
non-SI metric kilolitre kl kl US spelling: kiloliter
one cubic metre 		1
kL kL
litre l l US spelling: liter
one cubic decimetre
Triple combinations are also possible. See the full list. 		0.001
  • l impgal
  • l USgal
  • l U.S.gal
  • l USdrygal
  • l U.S.drygal
L L
  • L impgal
  • L USgal
  • L U.S.gal
  • L USdrygal
  • L U.S.drygal
centilitre cl cl US spelling: centiliter
 0.00001
cL cL
millilitre ml ml US spelling: milliliter
one cubic centimetre 		0.000001
  • ml impoz
  • ml USoz
  • ml U.S.oz
mL mL
  • mL impoz
  • mL USoz
  • mL U.S.oz
Imperial
&
US customary 		cubic yard cuyd cu yd 0.764554857984
cubic foot cuft (cufoot) cu ft The cufoot code will produce cubic foot as the plural form. 0.028316846592
cubic inch cuin cu in 0.000016387064
Imperial barrel impbbl imp bbl 36 imp gal 0.16365924
bushel impbsh imp bsh 8 imp gal 0.03636872
impbu imp bu
gallon impgal imp gal 4.54609 litres by definition, also
4 imp qt or 8 imp pt or 160 imp fl oz
Triple combinations are also possible. See the full list. 		0.00454609
  • impgal l
  • impgal L
  • impgal USgal
  • impgal U.S.gal
  • impgal USdrygal
  • impgal U.S.drygal
quart impqt imp qt 1/4 imp gal or 40 imp fl oz 0.0011365225
pint imppt imp pt 1/8 imp gal or 20 imp fl oz 0.00056826125
fluid ounce impoz (impfloz) imp fl oz 1/160 imp gal 0.0000284130625
  • impoz USoz
  • impoz U.S.oz
  • impoz ml
  • impoz mL
US customary
liquid measure 		barrel USbbl US bbl 31½ US gal
used for liquids except for oil and beer (see the full list) 		0.119240471196
U.S.bbl U.S. bbl
barrel oilbbl bbl 42 US gal 0.158987294928
beer barrel USbeerbbl
(usbeerbbl) 		US bbl 0.117347765304
U.S.beerbbl
(usbeerbbl) 		U.S. bbl
gallon USgal US gal 231 cubic inches by definition, also
4 US qt or 8 US pt or 128 US fl oz
Triple combinations are also possible. See the full list. 		0.003785411784
  • USgal l
  • USgal L
  • USgal impgal
U.S.gal U.S. gal
  • USgal l
  • USgal L
  • USgal impgal
quart USqt US qt 1/4 US gal or 32 US fl oz 0.000946352946
U.S.qt U.S. qt
pint USpt US pt 1/8 US gal or 16 US fl oz 0.000473176473
U.S.pt U.S. pt
fluid ounce USoz
(USfloz) 		US fl oz 1/128 US gal 0.0000295735295625
  • USoz ml
  • USoz mL
  • USoz impoz
U.S.oz
(U.S.floz) 		U.S. fl oz
  • U.S.oz ml
  • U.S.oz mL
  • U.S.oz impoz
US customary
dry measure 		barrel USdrybbl US bbl 105/32 US bsh 0.11562819898508
U.S.drybbl U.S. bbl
bushel USbsh US bsh 2150.42 cubic inches by definition 0.03523907016688
USbu U.S. bu
U.S.bsh U.S. bsh
U.S.bu U.S. bu
dry gallon USdrygal US dry gal 1/8 US bsh
Triple combinations are also possible. See the full list. 		0.00440488377086
  • USdrygal l
  • USdrygal L
  • USdrygal impgal
U.S.drygal U.S. dry gal
  • U.S.drygal l
  • U.S.drygal L
  • U.S.drygal impgal
dry quart USdryqt US dry qt 1/32 US bsh 0.001101220942715
U.S.dryqt U.S. dry qt
dry pint USdrypt US dry pt 1/32 US bsh 0.0005506104713575
U.S.drypt U.S. dry pt


SPEED
(Full list)
system unit code
(alternative) 		abbreviation notes conversion factor/(m/s) combinations
SI metre per second m/s m/s US spelling: meter per second
 1
  • m/s ft/s (m/s foot/s)
non-SI metric kilometre per hour km/h km/h US spelling: kilometer per hour
 (5/18)
  • km/h mph
Imperial
&
US customary 		mile per hour mph mph 0.44704
  • mph km/h
  • mph kn
foot per second ft/s (foot/s) ft/s The foot/s code will produce foot per second as the plural form. 0.3048
  • ft/s m/s
Maritime units knot kn (knot) kn (4.63/9)
  • kn mph


FORCE
(Full list)
system unit code
(alternative) 		abbreviation notes conversion factor/N combinations
SI giganewton GN GN Triple combinations are also possible. See the full list. 1,000,000,000
  • GN LT-f
  • GN LTf
  • GN ST-f
  • GN STf
meganewton MN MN Triple combinations are also possible. See the full list. 1,000,000
  • MN LT-f
  • MN LTf
  • MN ST-f
  • MN STf
kilonewton kN kN Triple combinations are also possible. See the full list. 1,000
  • kN LT-f
  • kN LTf
  • kN ST-f
  • kN STf
newton N N 1
  • N lb-f
  • N lbf
  • N oz-f
  • N ozf
millinewton mN mN 0.001
  • mN oz-f
  • mN ozf
  • mN gr-f
  • mN grf
micronewton μN (uN) µN 0.000001
  • μN gr-f
  • μN grf
nanonewton nN nN 0.000000001
  • nN gr-f
  • nN grf
cgs megadyne Mdyn Mdyn 10
kilodyne kdyn kdyn 0.01
dyne dyn
(dyne) 		dyn 0.00001
millidyne mdyn mdyn 0.00000001
Metric gravitational units tonne-force t-f tf 9,806.65
tf tf
kilogram-force kg-f kgf 9.80665
kgf kgf
gram-force g-f gf 0.00980665
gf gf
milligram-force mg-f mgf 0.00000980665
mgf mgf
Avoirdupois-based units poundal pdl pdl 0.138254954376
long ton-force LT-f LTf 9,964.01641818352
  • LT-f ST-f
LTf LTf
  • LTf STf
short ton-force ST-f STf 8,896.443230521
  • ST-f LT-f
STf STf
  • STf LTf
pound-force lb-f lbf 4.4482216152605
lbf lbf
ounce-force oz-f ozf 0.2780138203095378125
ozf ozf
grain-force gr-f grf 0.0006354602307515
grf grf


ENERGY
(Full list)
system unit code
(alternative) 		abbreviation notes conversion factor/J combinations
SI gigajoule GJ GJ 1,000,000,000
megajoule MJ MJ 1,000,000
kilojoule kJ kJ 1,000
hectojoule hJ hJ 100
decajoule daJ daJ 10
joule J J 1
decijoule dJ dJ 0.1
centijoule cJ cJ 0.01
millijoule mJ mJ 0.001
microjoule μJ (uJ) µJ 0.000001
nanojoule nJ nJ 0.000000001
cgs megaerg Merg Merg 0.1
kiloerg kerg kerg 0.0001
erg erg erg 0.0000001
Watt-hour multiples terawatt-hour TWh TWh 3.6×10^15
TW.h TW·h
gigawatt-hour GWh GWh 3.6×10^12
GW.h GW·h
megawatt-hour MWh MWh 3,600,000,000
MW.h MW·h
kilowatt-hour kWh kW·h 3,600,000
kW.h kW·h
watt-hour Wh Wh 3,600
W.h W·h
Electronvolt multiples gigaelectronvolt GeV GeV 0.0000000001602176487
megaelectronvolt MeV MeV 1.602176487×10^−13
kiloelectronvolt keV keV 1.602176487×10^−16
electronvolt eV eV 1.602176487×10^−19
millielectronvolt meV meV 1.602176487×10^−22
Calorie multiples Calorie Cal Cal The thermochemical calorie is the default definition. For other definitions see the full list. 4,184
megacalorie Mcal Mcal 4,184,000
kilocalorie kcal kcal 4,184
calorie cal cal 4.184
millicalorie mcal mcal 0.004184
pound/ounce-foot/
inch-hour-minute-second 		foot-poundal ftpdl ft·pdl 0.0421401100938048
foot-pound (energy) ftlbf ft·lbf 1.3558179483314004
ftlb-f ft·lbf
inch-pound force inlbf in·lbf 0.1129848290276167
inlb-f in·lbf
inch-ounce force inozf in·ozf 0.00706155181422604375
inoz-f in·ozf
horsepower-hour hph hp·h 2,684,519.537696172792
British thermal unit British thermal unit Btu Btu The International Steam Table British thermal unit is the default definition. For other definitions see the full list. 1,055.05585262
BTU BTU
TNT-based units gigatonne of TNT GtTNT 4.184×10^18
gigaton of TNT GtonTNT
megatonne of TNT MtTNT 4.184×10^15
megaton of TNT MtonTNT Mt
kilotonne of TNT ktTNT 4.184×10^12
kiloton of TNT ktonTNT kt
tonne of TNT tTNT 4,184,000,000
ton of TNT tonTNT
Other Hartree Eh Eh 4.35974417×10^−18
rydberg Ry Ry 2.1798741×10^−18
tonne of oil equivalent toe toe 41,868,000,000
barrel of oil equivalent BOE BOE 6,117,863,200
cubic foot of natural gas cuftnaturalgas
(cufootnaturalgas) 		The cufootnaturalgas code will produce cubic foot of natural gas as the plural form. 1,055,055.85262
litre-atmosphere latm l·atm 101.325
Latm L·atm
gallon-atmosphere impgalatm imp gal·atm 460.63256925
gallon-atmosphere USgalatm
(usgalatm) 		US gal·atm 383.5568490138
U.S.galatm
(usgalatm) 		U.S. gal·atm


TEMPERATURE
(Full list)
system unit code
(alternative) 		abbreviation notes conversion
to kelvin 		combinations
SI kelvin K K Triple combinations are also possible. See the full list. [K]
  • K °C (K C)
  • K °R (K R)
  • K °F (K F)
degree Celsius °C (C) °C ([°C]+273.15)
  • °C K (C K)
  • °C °R (C R)
  • °C °F (C F)
Imperial
&
US customary 		degree Rankine °R (R) °R ([°R]/1.8)
  • °R K (R K)
  • °R °C (R C)
  • °R °F (R F)
degree Fahrenheit °F (F) °F (([°F]+459.67)/1.8)
  • °F K (F K)
  • °F °C (F C)
  • °F °R (F R)
Celsius change C-change Example:  {{convert|5|C-change}}
Fahrenheit change F-change Example:  {{convert|10|F-change}}


MASS
(Full list)
system unit code
(alternative) 		abbreviation notes conversion factor/kg combinations
SI kilogram kg kg Triple combinations are also possible. See the full list. 1
  • kg lb
  • kg st
gram g g 0.001
  • g oz
milligram mg mg 0.000001
  • mg gr
microgram μg (ug) µg 0.000000001
non-SI metric tonne t t Triple combinations are also possible. See the full list. 1,000
  • t LT
  • t ST
metric ton MT t
  • MT LT
  • MT ST
Avoirdupois long ton LT 2,240 lb
used mostly in the British Commonwealth
Triple combinations are also possible. See the full list. 		1,016.0469088
  • LT t
  • LT MT
  • LT ST
long ton
short ton ST 2,000 lb
used mostly in the US
Triple combinations are also possible. See the full list. 		907.18474
  • ST t
  • ST MT
  • ST LT
short ton
stone st st 14 lb
used mostly in the British Commonwealth except Canada
Triple combinations are also possible. See the full list. 		6.35029318
  • st kg
  • st lb
pound lb lb Triple combinations are also possible. See the full list. 0.45359237
  • lb kg
  • lb st
ounce oz oz 0.028349523
  • oz g
drachm drachm 0.001771845195
drachm dram
grain gr gr equivalent to the troy grain 0.00006479891
Troy troy ounce ozt ozt 0.0311034768
other carat carat 0.0002


TORQUE
(Full list)
system unit code abbreviation notes conversion factor/N·m combinations
Industrial
SI newton metre Nm N·m Triple combinations are also possible. See the full list. 1
  • Nm kg-m
  • Nm ft-lb
Non-SI metric kilogram-meter kg-m kg-m 9.80665
  • kg-m Nm
  • kg-m ft-lb
Imperial
&
US customary 		foot-pound ft-lb ft-lb 1.3558
  • ft-lb Nm
  • ft-lb kg-m
Scientific
SI newton metre N-m N·m Triple combinations are also possible. See the full list. 1
  • N-m kgf-m
  • N-m lbf-ft
Non-SI metric kilogram-force meter kgf-m kgf·m 9.80665
  • kgf-m N-m
  • kgf-m lbf-ft
Imperial
&
US customary 		pound-foot lbf-ft lbf·ft 1.3558
  • lbf-ft N-m
  • lbf-ft kgf-m
PRESSURE
unit code abbreviation conversion factor/Pa
gigapascal GPa GPa 1,000,000,000 ‎
megapascal MPa MPa 1,000,000 ‎
kilopascal kPa kPa 1,000 ‎
hectopascal hPa hPa 100 ‎
pascal Pa Pa 1 ‎
millipascal ‎mPa‎ mPa 0.001 ‎
millibar mbar mbar 100 ‎
mb mb ‎
decibar ‎dbar dbar 10,000 ‎
bar bar bar 100,000 ‎
kilobarye kBa kBa 100 ‎
barye ‎Ba Ba 0.1 ‎
standard atmosphere atm atm 101,325 ‎
torr Torr Torr (20,265/152) ‎
millimetre of mercury mmHg mmHg 133.322387415 ‎
inch of mercury inHg inHg 3,386.388640341 ‎
pound per square inch psi psi (444,822,161.52605/64,516) ‎
FUEL EFFICIENCY
unit code
(alternative) 		notes combinations
kilometres per litre km/l (km/L) Use km/L to get "km/L"
  • km/l mpgimp
  • km/l mpgus
litres per 100 kilometres l/100 km (L/100 km) Use L/100 km to get "L/100 km"
  • l/100 km mpgimp
  • l/100 km mpgus
litres per kilometre l/km (L/km) Use L/km to get "L/km"
  • l/km impgal/mi
  • l/km usgal/mi
miles per imperial gallon mpgimp
  • mpgimp mpgus
miles per US gallon mpgus (mpgUS, mpgU.S.) Use mpgUS to get "US"

Use mpgU.S. to get "U.S."
mpgus will give "U.S." if spelling is
set to US & "US" otherwise

  • mpgus mpgimp
imperial gallons per mile impgal/mi
  • impgal/mi
US gallons per mile usgal/mi (USgal/mi, U.S.gal/mi) As above with the us vs US vs U.S.
  • usgal/mi
The mpgUS, mpgU.S., USgal/mi vs U.S.gal/mi, km/L, L/100 km and L/km variants work within combinations also (making 36 combinations in total).
POWER
Watts, kilowatts, milliwatts, etc. are supported. As is horsepower (English & metric). Use standard abbreviations as input code (lower case hp for horsepower, for example)
POPULATION DENSITY
unit code
(alternative) 		notes combinations
inhabitants per square kilometre PD/sqkm PD stands for population density, i.e. humans (inhabitants)
  • PD/sqkm PD/sqmi
per square kilometre /sqkm Used when the word 'inhabitants' would be inappropriate.
  • /sqkm /sqmi
inhabitants per hectare PD/ha
  • PD/ha PD/acre
per hectare /ha
  • /ha /acre
inhabitants per square mile PD/sqmi PD stands for population density, i.e. humans (inhabitants)
  • PD/sqmi PD/sqkm
per square mile /sqmi Used when the word 'inhabitants' would be inappropriate.
  • /sqmi /sqkm
inhabitants per acre PD/acre
  • PD/acre PD/ha
per acre /acre
  • /acre /ha

Examples

See also

  • {{convinfobox}} for use in infoboxes
  • {{bbl to t}} for converting barrel of oil to tonnes
  • {{CwtQtrLb to kg}} for converting long hundred weights, quarters and pounds into kilograms
  • {{Decdeg}} for converting degrees, minutes and seconds to decimal degrees
  • {{HMS2Deg}} for converting hour angles, given in hours, minutes and seconds, to decimal degrees
  • Template:T1 for converting and displaying a person's height
  • {{miles-chains}} for converting miles and chains to kilometres linking "chains"
  • {{pop density}} for converting a population and area to a density
  • {{Inflation}} for calculating inflated prices
  • {{metricate}}
  • {{RailGauge}} for converting rail (track) gauges
  • {{Unit area}} for converting areas


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