Unit Converters
Length Converter
Length — length Converter converts between length units — metres, kilometres, miles, feet and inches — through a metre base. This page runs that same calculation on your numbers, in your browser: no signup, no uploads, nothing stored.
Length Converter turns your value plus the source and target units into the converted length in the unit you choose using fixed, standard conversion ratios. The maths runs locally, so nothing you enter leaves the page.
About this calculator
Length Converter converts between length units — metres, kilometres, miles, feet and inches — through a metre base. It matters whenever the same quantity is expressed in two systems and a wrong factor silently breaks the answer. Here is the calculation on real numbers: To convert 5 miles to kilometres, multiply by 1.609: 5 × 1.609 = 8.05 km . Going the other way, 100 metres is 100 ÷ 1000 = 0.1 km, since a kilometre is 1,000 metres. For your own figures, use the calculator above — same method, your inputs, computed on-device.
How to use
- Enter the length value.
- Choose the From length unit.
- Choose the To length unit.
- Press Calculate to see the converted length.
Why use Length Converter
Fast
Calculations run in your browser. No round trip to a server.
Private
Your inputs never leave your device. Nothing is uploaded.
Free
No signup, no paywall, no ads-in-results, no watermarks.
Accurate
Uses standard conversion factors where applicable. Check critical measurements before relying on the result.
Mobile-ready
Optimised for phones, tablets, and desktops alike.
Transparent
Honest disclaimers wherever browser limits or regional rules apply.
Common uses
Use it for school and college problems
Use it for furniture and room planning
Use it when checking a measurement twice
Length in design and drafting work
Use it when shopping on overseas sites
Use it when a manual uses different units
Technical notes
Length Converter converts between length units — metres, kilometres, miles, feet and inches — through a metre base.
Conversions use standard reference factors; for trade or engineering tolerances keep more decimal places than the display shows.
Because it runs locally, results appear instantly with no server round-trip.
Worked example
To convert 5 miles to kilometres, multiply by 1.609: 5 × 1.609 = 8.05 km. Going the other way, 100 metres is 100 ÷ 1000 = 0.1 km, since a kilometre is 1,000 metres.
FAQ
Which length units are supported?
Millimetres, centimetres, metres, kilometres, inches, feet, yards, and miles.
Are metric-to-imperial results exact?
They use standard definitions such as 1 inch = 2.54 cm exactly.
Can I convert between any two units?
Yes. Pick any From and To length units and the tool converts between them.
Does the Length Converter send my data to a server?
No. The Length Converter runs entirely in your browser, so nothing you enter is uploaded, stored, or shared.