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Length Converter

Convert metres, kilometres, centimetres, inches, feet, yards and miles using fixed conversion factors.

Enter your values

Enter a numeric value. Use a non-negative value.
Check the selected option before calculating.
Check the selected option before calculating.

Use a decimal point, without thousands separators.

Example result
Converted value
10,000 cm

The initial result uses the example values. Enter your own values and calculate again.

Edit inputs

How it works

A foot equals exactly 0.3048 metres; an inch equals 0.0254 metres. Multiply by the source factor to get metres, then divide by the target factor.

Inputs and units
Length Converter · Inputs and units
InputExample valueWhat to enter
Value100Enter a numeric value. Use a non-negative value.
From unitmCheck the selected option before calculating.
To unitcmCheck the selected option before calculating.
Result = value × source factor / target factor

Worked example

Show example inputs and results

This example is generated by the same calculation engine using the starting values in the form. Your own inputs produce your own result.

Value
100
From unit
m
To unit
cm

Complete example results

Converted value
10,000 cm

Reading the result

Check the definitions of the source and target units. A conversion changes the representation of a measurement; it does not measure the quantity again. Round at the final step if you will reuse the result.

Questions and answers

Can I use the example values for my own calculation?

The example values illustrate the calculation. Replace every input with your own information, especially dates, rates and the selected operation.

Which mile is used?

The international mile of 1,609.344 metres is used, not the nautical mile. All conversions are lengths, not areas.

Why are some results rounded?

Results display up to 8 decimal places. Calculations use the unrounded values; very small values use scientific notation. JavaScript floating-point arithmetic can introduce tiny rounding differences.

Are my inputs sent to a server?

The calculator processes inputs in your browser. Its code does not send your values to a server.

Conversion reference: NIST SI Guide

Methods & accuracy

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