Length converter

Enter your length and choose the units. The answer updates as you type.

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Length converter processes your input in this browser. Inputs and results are excluded from analytics. Recent tools save tool names, visit counts and last-visit times. Saved tools store only their names. Draft saving is optional and stays on this device; delete saved text with the draft controls. Loading text from a URL is optional and contacts that server; its URL and your IP address are visible to the server. An optional “Use in” action keeps a handoff in this tab. The next tool removes it on arrival and ignores it if more than a minute has passed.

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Value

From

Converted value

Precision and other units

Decimals, fractions and scientific notation work here.

Significant digits

Send the displayed number to the notation converter in this tab. Units stay here.

International inch and foot definitions are used; this does not use the retired US survey foot.

The same value in other units
Unit	Value

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Updated 2026-09-19

How to convert length

International inch and foot definitions are used; this does not use the retired US survey foot.

Multiply by the source unit factor to get the base quantity, then divide by the target factor. The other-units table compares the same value without retyping it.

Next: Area converter

A worked example

12 inches × 2.54 = 30.48 centimeters.

Next: Volume converter

Before you use the result

Displayed values are rounded; extra digits do not make your measurement more accurate. International inch and foot definitions are used; this does not use the retired US survey foot.

Next: Online ruler

inches (in) to centimeters (cm): reference values

inches (in)	centimeters (cm)
1	2.54
10	25.4
100	254

Calculated with the same conversion as the tool above.

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ToolOctopus. “Length converter.” Updated 2026-09-19. https://tooloctopus.com/length-converter.

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