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Length & distance calculators
Convert common international length and distance units.
Choose the right calculation
Use international definitions unless another convention is named. A linear conversion factor must be squared for area or cubed for volume. Kilometres and statute miles are distinct from nautical units.
Find a tool for your question
Metres to Feet Converter
Convert metres to feet with an explicit conversion factor.
Feet to Metres Converter
Convert feet to metres with an explicit conversion factor.
Inches to Centimetres Converter
Convert inches to cm with an explicit conversion factor.
Centimetres to Inches Converter
Convert cm to inches with an explicit conversion factor.
Kilometres to Miles Converter
Convert km to miles with an explicit conversion factor.
Miles to Kilometres Converter
Convert miles to km with an explicit conversion factor.
Centimetres to Feet and Inches Calculator
Express a non-negative height as whole feet and a decimal inch remainder.
Feet and Inches to Centimetres Calculator
Convert a mixed feet-and-inches measurement into centimetres.
Can I use a length conversion factor directly for area?
No. Square the linear factor when converting area and cube it when converting volume.
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More unit converters topics
Mass & weight units
Convert kilograms, pounds, grams and avoirdupois ounces.
Explore topic ↗6 calculatorsLiquid volume
Convert litres and explicitly named US or UK gallon conventions.
Explore topic ↗4 calculatorsArea units
Convert floor and land areas between metric and international customary units.
Explore topic ↗4 calculatorsSpeed units
Convert distance-per-time rates without changing the measured motion.
Explore topic ↗4 calculatorsTemperature scales
Convert absolute temperature readings among Celsius, Fahrenheit and kelvin.
Explore topic ↗4 calculatorsEnergy & pressure units
Convert energy and pressure using explicit SI factors.
Explore topic ↗4 calculatorsTime & angle units
Convert decimal time quantities and angle scales.
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