Convert between metres, feet, miles, kilometres and more — instantly.
Convert any length or distance between metric (mm, cm, m, km) and imperial (in, ft, yd, mi) units. Two-way conversion with high precision, perfect for travel, DIY and engineering.
Millimetres, centimetres, metres, kilometres, inches, feet, yards and miles. All conversions go through metres internally for precision.
Conversions use exact ratios defined by the international yard and pound agreement (1 inch = 25.4 mm exactly), so results are accurate to floating-point precision.
Just swap the source and target units — the calculator works in any direction without re-entering the value.
Yes. The calculator handles values from sub-millimetre to thousands of kilometres without loss of precision in the displayed digits.