Formula
- converted = (value / fromFactor) × toFactor
- Factors relative to metre
About this calculator
Part of our Utilities Calculators collection. Scientific calculator, unit converter, and general engineering reference tools.
How it works
Select a source unit and target unit from meter, kilometer, centimeter, millimeter, mile, yard, foot, inch, or nautical mile. Enter a value and get the converted result immediately. Handy for mixing metric drawings with imperial stock sizes.
Enter your values in the inputs above. Results update instantly as you change numbers. No login, no server upload, and no waiting for a page reload.
Worked example
Convert 100 mm to inches.
- 100 mm = 0.1 m
- 0.1 m × 39.3701 in/m = 3.937 in
Result: 100 mm = 3.937 in.
When to use
- Mixing metric drawings with imperial stock
- Quick length conversions in the shop
- Checking nominal sizes across unit systems
Limitations
- Length units only; not mass, force, or pressure
- Instant update mode; no CALCULATE button
- Nautical mile included for marine applications
FAQ
- Which units are supported?
- Metre, km, cm, mm, mile, yard, foot, inch, and nautical mile.
Privacy and accuracy
Every calculation runs locally in your browser. Your design data never leaves your device. Results are intended for preliminary engineering work. Always verify critical designs with qualified review and applicable standards before production use.
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