BIZOMAT MAKEOS · Units

Length Converter

What is this length in other units?

Convert a length between SI, metric and US customary units and see it in every listed unit at once.

Open the calculatorRuns in your browser. No account needed.

How this tool works

Inputs, units and where to find them

InputUnitTypical source
Length valueThe number exactly as written on the drawing, data sheet or quote.
Unit of the entered valuechoiceThe unit printed beside the value; check prefixes such as k, M and m.

What each input means

Open an input to see what it is, its units, the worked example and the common mistakes, with a small diagram.

What this means: Length value
Illustration: Length valueA bar with a dimension line and arrows from one end to the other, marking the length Length value.LExample: 1Length value
What it is
The length you want to convert, exactly as written on the drawing, data sheet or quote.
Units and format
Enter a plain number with no unit. Negative values are accepted. Required: the tool does not calculate until every input is valid.
Example
The form opens with 1 as a worked example. It is an illustration, not a recommended value: replace it with your own figure.
Get it right
Copy the number with all its decimals; round only the converted result.
What this means: Unit of the entered value
Illustration: Unit of the entered valueThe options for Unit of the entered value, with the one currently selected highlighted.mmmµmcm+6 moreExample: inUnit of the entered value
What it is
The unit the length was given in. The tool converts from this unit to every other listed length unit.
Units and format
Choose one of 10 options from the list: m; mm; µm; cm; km; in; thou (mil); ft; yd; mile.
Example
The form opens with “in” selected as a worked example. Choose the option that matches your case.
Get it right
Check the prefix carefully: mm, µm and m differ by factors of 1000, and a thou (mil) is one thousandth of an inch.

Method and formulas

  1. Value in m = entered value × factor of the entered unit.
  2. Value in each other unit = SI value ÷ that unit’s factor.
  3. Factors used (1 unit = … m): mm 0.001; µm 0.000001; cm 0.01; km 1000; in 0.0254; thou (mil) 0.0000254; ft 0.3048; yd 0.9144; mile 1609.344.
  4. Example: 1 in = 0.0254 m.

Limitations

  • Displayed values are rounded to eight decimal places; small values use significant figures.
  • Example values are illustrations. Replace them with values for your actual task.

Typical uses

  • Convert length values on drawings, data sheets and quotes
  • Check supplier data given in other units

Who it is for

  • Engineers
  • Technicians
  • Buyers and estimators

What you get

  • The length in each listed unit
  • Value in m

Interpreting the result

  • Use the unit your specification is written in, and keep the original value on record.

References

  • Machinery’s Handbook, 29th edition (Industrial Press, 2012), printed pp. 2661–2662. Topic reference; no source tables or recommended settings are reproduced.
  • BIPM: The International System of Units (SI brochure) — https://www.bipm.org/en/publications/si-brochure

BIZOMAT tools are screening and decision-support utilities. Verify important financial, engineering, safety, legal or operational decisions using appropriate professional standards and your organisation’s approved data.

Open the Length Converter calculator