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
100000

Decimals and scientific notation supported.

THE WORKING

1 km = 100000 cm

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
Metersm1000
Centimeterscm100000
Millimetersmm1000000
Kilometerskm1
Inchesin39370.0787402
Feetft3280.83989501
Yardsyd1093.61329834
Milesmi0.621371192237
Micrometersµm1000000000
Nanometersnm1.0e+12
Decimetersdm10000
Nautical milesnmi0.539956803456
Furlongsfur4.9709695379
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.