Unit conversion / Length

Length converter

The international inch is exactly 0.0254 meters. Feet, yards and miles here use international definitions.

THE CONVERTER

Length

Instant results
39.3700787402

Decimals and scientific notation supported.

THE WORKING

1 cm = 0.393700787402 in

12 significant digits
THE COLLECTION

What are you measuring?

12 ways to find your answer
AT A GLANCE

Length reference

The international inch is exactly 0.0254 meters. Feet, yards and miles here use international definitions.

Selected value in every length unit
UnitEquivalent
Metersm1
Centimeterscm100
Millimetersmm1000
Kilometerskm0.001
Inchesin39.3700787402
Feetft3.28083989501
Yardsyd1.09361329834
Milesmi0.000621371192237
Micrometersµm1000000
Nanometersnm1000000000
Decimetersdm10
Nautical milesnmi0.000539956803456
Furlongsfur0.0049709695379
A LITTLE CONTEXT

From a number
to an answer.

01

Choose the right family

Length, weight, temperature and more. Units must measure the same kind of quantity.

02

Set your units

Choose where you're starting and where you want to go. Use the arrows to swap direction.

03

See the whole picture

Read the result, check the working, or compare your value across the reference table.

How precise are the results?

We display up to 12 significant digits. Very small or large values use scientific notation. Floating-point arithmetic and rounded definitions can introduce small differences.

Does this work without JavaScript?

Yes. Enter your value, choose your units and press Convert. With JavaScript, the result and table update as you type.

Can I convert between different families?

Only units of the same quantity can be converted directly. For example, converting liters to kilograms requires the material's density.