Length converters
Length uses exact definitions for the international foot and inch. Choose an exact direction below, or open the universal converter for all compatible units.
Meters to Feet
m → ft
Feet to Meters
ft → m
Centimeters to Inches
cm → in
Inches to Centimeters
in → cm
Inches to Millimeters
in → mm
Example length conversions
Start with a calculated reference value, then open the tool to enter your own measurement. Results marked ≈ are rounded for display.
- Meters to Feet1 m ≈ 3.280839895 ft
- Centimeters to Inches1 cm ≈ 0.393700787 in
- Inches to Millimeters1 in = 25.4 mm
Understanding length
International foot and inch definitions
The international inch is exactly 0.0254 meter and the international foot is exactly 0.3048 meter. For construction plans or survey data, verify which foot standard the source uses.
How to verify a conversion
Length measurements are one-dimensional. Do not reuse a length factor for square feet or cubic feet: those units require squared or cubed factors.
Source definitions: NIST Guide to the SI. See our conversion methodology for calculation and rounding details.
Accurate calculations, no guesswork
Every converter uses consistent unit definitions and returns an interactive result you can verify. For multiple measurements, use the batch converter.
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