Rex says
Everyday utility math — the kind you'd otherwise pull up four browser tabs for. I keep it to one clean answer.
Try a scenario
Click to load — tweak from there.Inputs
Result
Meters
100.0000
Kilometers
0.1000
Centimeters
10000.00
Millimeters
100000.00
Inches
3937.008
Feet
328.084
Yards
109.361
Miles
0.0621
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One click, a permanent link with your numbers baked in.
How to use this
- 1Enter value.
- 2Enter from.
- 3Read your meters on the right — it updates as you type.
- 4Hit Share to keep the scenario or send it to someone.
About this calculator
Convert between the most common length units.
Worked example
Using the values the calculator loads with:
Inputs
- Value: 100
- From: Meters
Results
- Meters: 100
- Kilometers: 0.1
- Centimeters: 10,000
- Millimeters: 100,000
- Inches: 3,937.008
- Feet: 328.084
- Yards: 109.361
- Miles: 0.0621
What each field means
Inputs
- Value
- The value used in the calculation. Starts at 100 so you have a working example on load.
- From
- Pick the option that matches your situation — the maths changes per option. Choices: Millimeters, Centimeters, Meters, Kilometers, Inches, Feet, Yards, Miles.
Results
- Meters
- Returned as a decimal number and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Kilometers
- Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Centimeters
- Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Millimeters
- Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Inches
- Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Feet
- Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Yards
- Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Miles
- Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
How does the length / distance converter work?
Convert between the most common length units.
What do I need to enter?
2 values: value, and from. Each field starts with a sensible default, so you can change one number at a time and watch the result move.
What does the meters result mean?
It is returned as a decimal number and updates live as you edit the inputs, so you can compare two or three versions of a scenario in a few seconds.
Is this calculator free, and do I need an account?
Yes, it's free, and no account is required. Nothing you type is stored on our servers — the maths runs entirely in your browser.
How accurate is the result?
It applies the standard formula exactly, so the arithmetic is precise. Estimates assume standard, average conditions — local rules, pricing, and materials vary.
Who is this tool for?
It's built for anyone doing everyday planning maths — a quick estimate that would otherwise need four browser tabs and a calculator app.
Accuracy and limitations
- Estimates assume standard, average conditions — local rules, pricing, and materials vary.
- Results are rounded for readability; add a buffer before ordering, booking, or committing.
- Double-check anything with a real cost attached against a local quote.
Related tools
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Length Converter. Retrieved from https://www.revenuelab.fyi/toolbox/length-converter
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/length-converter" target="_blank" rel="noopener">Length Converter — RevenueLab</a> (2026).</p>
Source: [Length Converter — RevenueLab](https://www.revenuelab.fyi/toolbox/length-converter) (2026).