Template:Convert

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Usage

This template shows measurement quantities as primary and converted secondary units (or ranges), with optional rounding, wikilinks, abbreviation, or US spellings, and various separators including:  parentheses "( )", "or", hyphens, comma, "to" or dashes. Styles include: distance "32 metres (105 ft)" and "32 metres or 105 feet"; temperature "18 °C (64 °F)"; mass "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, abbr=off, sp=us, adj=on, adj=mid, disp=x, 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, such as "|1" to show tenths or "|-2" to show full 100's, etc.

Single value:

{{convert|value|in_unit|out_unit|round_to|...}}

Range of 2 values, or set of 3 or 4 (see below for list of range options):

 {{convert|''val1''|''range''|''val2'' |''in_unit''|''out_unit''|''round_to''|...}}
 {{convert/3 |''val1''|''range''|''val2''|''words''|''val3''|''in_unit''|''out_unit''|''round_to''|...}}
 {{convert/4 |''val1''|''words''|''val2''|''words''|''val3''|''words''|''val4''|''in_unit''|''out_unit''|...}}
  • Numbers must be entered in unformatted form (without commas). 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 U.S. spellings (sp=us for meter), 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 very limited in-built capacity for dimensional analysis. It is therefore up to the user to ensure that most 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. Note also that the code lb gives pounds mass, for pounds force use lbf.
  • 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 2 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=off}} 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
  • Other fuel-consumption units, except "mpg" or "L100km" shown above.
  • Large scale units (e3, e6, e9)
  • Combination-based units (ft&in, st&lb, lb&oz) due to complexity of the conversion.

Range/set of 3 or 4 values

Note: not yet operational for all units
Input Displays as
{{convert |2|*|4|*|6|m|ft}} 2×4×6 metres (6.6×13.1×19.7 ft)
{{convert |60|-|70|-|80|kg|lb}} 60–70–80 kilograms (130–150–180 lb)
{{convert |60|-|70|-|80|-|90|kg|lb}} 60–70–80–90 kilograms (130–150–180–200 lb)
{{convert |60|to|80|or|85|m|ft}} 60 to 80 or 85 metres (197 to 262 or 279 ft)
{{convert |41|to|50|to|60|F|C}} 41 to 50 to 60 °F (5 to 10 to 16 °C)

Parameters

Parameters
Use US spelling attach |sp=us
Make units linked 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.
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
attach |abbr=off   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.
The default value is:  disp=b for brackets/parentheses.
Change "( )" to customized separators attach |disp=x| (begin | end) to show "xx (begin yy end)" See example 1
attach |disp=x|; to show "xx; yy" See example 2
attach |disp=x| (same as |) to show "xx (same as yy)". See example 3
Example 1: {{convert|9|km|mi|disp=x| [|]}}9 kilometres [5.6 mi] (note space before [|)
Example 2: {{convert|9|km|mi|disp=x|;}}9 kilometres;5.6 mi
Example 3: {{convert|10|km|mi|disp=x| (about |)}}10 kilometres (about 6.2 mi) (note spaces used within the code).
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=off 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 "3.7 miles (6 km)".
To get symbol "mi" use abbr=in, to abbreviate the input unit (left-side 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 integer greater than zero}. 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 skip the precision parameter (the 3rd or 4th unnamed parameter) e.g. {{convert|100|km|ft}} gives 100 kilometres (330,000 ft) and {{convert|100|km}} gives 100 kilometres (62 mi).
Display input value with a fraction {{convert|3/8|in|mm|3|abbr=on}} → 38 in (9.525 mm) or {{convert|11+1/4|in|cm|2|abbr=on}} → 11 14 in (28.58 cm)

For negative amounts, use two minus signs (hyphens): -11-1/4.

Generate a hidden sort key for use with a sortable table attach |sortable=on to generate a hidden sort key so that sortable tables will sort correctly. This uses {{ntsh}} to generate a sort key from the first numeric value. It ignores any additional values, i.e., 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, i.e.: 5, 10, 15 instead of 10, 15, 5.

Parameters still under construction

Parameters still under construction. May not work in all situations
disp=5[note 1] The output will be rounded to the nearest 5 units. Might not work when linking unit names.
disp=tablecen[note 1] 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[note 1] 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[note 1] "Abbreviates" (removes) commas. 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.
disp=br This separates input and output units with a forced line break. This can be useful in tables with limited horizontal space.
disp=sqbr Shows square brackets "[ ]" instead of parentheses "( )" in output. Example: 55 miles [89 km]. This option can be used in direct quotes, to show conversions in editorial brackets. See: attach |disp=x|[|], above, as another way of showing brackets "[ ]".
  1. 1.0 1.1 1.2 1.3 This is a limited, temporary option, until an alternative can be implemented.

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. REDIRECT Template:Zero width space

Template:R from move110 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 integer greater than zero} as noted above.
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.
Examples of default rounding
Input Displays as Note
{{convert|550|ft|m|0}} 550 feet (168 m) Approximate value is 167.64 m
{{convert|550|ft|m}} 550 feet (170 m) Rounds to 170, when approximate value is 167.64 m
{{convert|500|ft|m|0}} 500 feet (152 m) Approximate value is 152.4 m
{{convert|500|ft|m}} 500 feet (150 m) Rounds to 150, when approximate value is 152.4 m

Units supported

Template:Convert/list of units/unitrowTemplate:Convert/list of units/unitnonote
  • °C K (C K)
  • °C °R (C R)
  • °C °F (C F)
Template:Convert/list of units/unitnonote
  • °F K (F K)
  • °F °C (F C)
  • °F °R (F R)
Abridged list of units supported by {{Convert}}
Explanation
system unit unit-
code
symbol or
abbrev.
notes sample default
conversion
combination
output units
the system(s) to which the unit belongs units listed by name unit-code to use in template symbols shown in output other notes about the units sample of the default conversion for the unit output codes for multiple conversions


LENGTH
(Full list)
system unit unit-
code
abbrev-
iation
notes sample default
conversion
combination
output units
SI

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  • km mi

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  • m ft
  • m ftin

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  • cm in

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  • mm in

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non-SI metric

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Imperial
&
US customary

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  • mi km

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  • ftin (feet and inches)
  • ft m (foot m)

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  • in cm
  • in mm
Other

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AREA
(Full list)
system unit unit-
code
abbrev-
iation
notes sample default
conversion
combination
output units
SI

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  • km2 sqmi

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  • m2 sqft

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  • cm2 sqin

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  • mm2 sqin
non-SI metric

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Imperial
&
US customary

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  • sqmi km2

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  • sqft m2 (sqfoot m2)

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  • sqin cm2
Other

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VOLUME
(Full list)
system unit unit-
code
abbrev-
iation
notes sample default
conversion
combination
output units
SI

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non-SI metric

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  • l impgal
  • l USgal
  • l U.S.gal
  • l USdrygal
  • l U.S.drygal

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  • L impgal
  • L impqt
  • L USgal
  • L U.S.gal
  • L USdrygal
  • L U.S.drygal

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  • ml impoz
  • ml USoz
  • ml U.S.oz

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  • mL impoz
  • mL USoz
  • mL U.S.oz
Imperial
&
US customary

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Imperial

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  • impgal l
  • impgal L
  • impgal USgal
  • impgal U.S.gal
  • impgal USdrygal
  • impgal U.S.drygal

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  • impoz USoz
  • impoz U.S.oz
  • impoz ml
  • impoz mL
US customary
liquid measure

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  • USgal l
  • USgal L
  • USgal impgal

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  • USgal l
  • USgal L
  • USgal impgal

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  • USoz ml
  • USoz mL
  • USoz impoz

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  • U.S.oz ml
  • U.S.oz mL
  • U.S.oz impoz
US customary
dry measure

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  • USdrygal l
  • USdrygal L
  • USdrygal impgal

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  • U.S.drygal l
  • U.S.drygal L
  • U.S.drygal impgal

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SPEED
(Full list)
system unit unit-
code
abbrev-
iation
notes sample default
conversion
combination
output units
SI

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  • m/s ft/s (m/s foot/s)
non-SI metric

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  • km/h mph
Imperial
&
US customary

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  • mph km/h
  • mph kn

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  • ft/s m/s
Maritime units

Template:Convert/list of units/unitrow

  • kn mph


FORCE
(Full list)
system unit unit-
code
abbrev-
iation
notes sample default
conversion
combination
output units
SI

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  • GN LT-f
  • GN LTf
  • GN ST-f
  • GN STf

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  • MN LT-f
  • MN LTf
  • MN ST-f
  • MN STf

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  • kN LT-f
  • kN LTf
  • kN ST-f
  • kN STf

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  • N lb-f
  • N lbf
  • N oz-f
  • N ozf

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  • mN oz-f
  • mN ozf
  • mN gr-f
  • mN grf

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  • μN gr-f
  • μN grf

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  • nN gr-f
  • nN grf
cgs

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Metric gravitational units

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Avoirdupois-based units

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  • LT-f ST-f

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  • LTf STf

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  • ST-f LT-f

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  • STf LTf

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ENERGY
(Full list)
system unit unit-
code
abbrev-
iation
notes sample default
conversion
combination
output units
SI

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cgs

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Watt-hour multiples

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Electron-
volt
multiples

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Calorie multiples

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pound/
ounce
-foot/
inch-hour-minute-second

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British thermal unit

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TNT-based units

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Other

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cubic foot of natural gas cuftnaturalgas (cufootnaturalgas) Unit-code cufootnaturalgas will show "cubic foot of natural gas" if plural. 1,055,055.85262

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TEMPERATURE
(Full list)
system unit unit-
code
abbrev-
iation
notes sample default
conversion
combination
output units
SI

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  • K °C (K C)
  • K °R (K R)
  • K °F (K F)
Imperial
&
US customary

Template:Convert/list of units/unitnonote

  • °R K (R K)
  • °R °C (R C)
  • °R °F (R F)
Celsius change C-change Used for temperature intervals instead of absolute temperatures
Example:  {{convert|5|C-change|0}} warmer
Result: 5 °C (9 °F) warmer
Fahrenheit change F-change Used for temperature intervals instead of absolute temperatures
Example:  {{convert|10|F-change|0}} colder
Result: 10 °F (6 °C) colder


MASS
(Full list)
system unit unit-
code
abbrev-
iation
notes sample default
conversion
combination
output units
SI

Template:Convert/list of units/unitrow

  • kg lb
  • kg st

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  • g oz

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  • mg gr

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non-SI metric

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  • t LT
  • t ST

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  • MT LT
  • MT ST
Avoirdupois

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  • LT t
  • LT MT
  • LT ST

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  • ST t
  • ST MT
  • ST LT

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  • st kg
  • st lb

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  • lb kg
  • lb st

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  • oz g

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Troy

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other

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TORQUE
(Full list)
system unit unit-
code
abbrev-
iation
notes sample default
conversion
combination
output units
Industrial
SI

Template:Convert/list of units/unituninote

  • Nm kg.m
  • Nm lb.ft
Non-SI metric

Template:Convert/list of units/unitnonote

  • kg.m Nm
  • kg.m lb.ft
Imperial
&
US customary

Template:Convert/list of units/unitnonote

  • lb.ft Nm
  • lb.ft kg-m
Scientific
SI

Template:Convert/list of units/unituninote

  • N.m kgf.m
  • N.m lbf.ft
Non-SI metric

Template:Convert/list of units/unitnonote

  • kgf.m N.m
  • kgf.m lbf.ft
Imperial
&
US customary

Template:Convert/list of units/unitnonote

  • lbf.ft N.m
  • lbf.ft kgf.m
PRESSURE
unit unit-
code
abbrev-
iation
sample default
conversion

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FUEL EFFICIENCY
unit unit-
code
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 (lowercase hp for horsepower, for example)
POPULATION DENSITY
unit unit-
code
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
COST PER UNIT MASS
unit unit-
code
notes combinations
dollars per pound $/lb "$" can mean US$, HK$, etc.
  • (none)
dollars per kilogram $/kg
  • (none)
dollars per troy ounce $/ozt 12 troy ounces in 1 troy pound
  • (none)

Further information

Supporting modules

The following Lua modules are called by this template:

Module:Convert/data is transcluded into every page using the convert module, so experimenting with a new unit in that module would involve a significant strain on the job queue. The Module:Convert/extra module is an alternative which is only transcluded on pages with a unit that is not defined in the main data module.

Help pages

The following help pages are available:

Error reports

A page containing a convert error is added to one of the following categories, providing the page is in a specified namespace (articles and templates, by default):

Related pages