Length Converter

Convert between millimetres, centimetres, metres, kilometres, inches, feet, yards, and miles. Swap units instantly for DIY, design, and everyday measurements. Everything runs locally in your browser — your inputs are not uploaded to produce the result.

One metre is about 3.28084 feet (exactly 1 ÷ 0.3048). By international agreement, 1 inch = 25.4 millimetres exactly.

Use Length for short measurements (furniture, plans). Use Distance for travel-scale units like miles, kilometres, and nautical miles. Tweak the inputs above to compare options, then copy or note the result you need.

The international inch is 25.4 mm exactly, so metre–foot conversions are not folk approximations. DIY plans often mix millimetres (joinery) and feet-inches (older drawings) — convert once and stick to one system on site.

Length is for short measures (timber, fabric, people). Distance is the better list for miles and kilometres of travel. Feet-and-inches input on this tool is for entering imperial the way you say it, not only displaying a decimal foot.