Distance Converter

Convert between kilometres, metres, miles, yards, and feet

All conversions use the metre as a canonical intermediate value, which avoids rounding errors when chaining between units. Every factor is exact by definition: 1 mile = 1,609.344 m, 1 yard = 0.9144 m, and 1 foot = 0.3048 m. Results maintain full floating-point precision internally and are formatted for readability.

Units supported

• Kilometres (km) — road distances in most of the world.
• Metres (m) — the SI base unit; junction and exit signing in metric countries.
• Miles (mi) — road distances in the UK and US.
• Yards (yd) — short road distances on UK signage (“Road narrows 400 yds”).
• Feet (ft) — height and width restrictions, and short distances in the US.

Reference values

• 1 mile = 1.609 km = 1,760 yd = 5,280 ft
• 10 km = 6.21 miles
• 100 yards = 91.44 m
• A marathon: 42.195 km = 26.22 miles