Metric and imperial, either way
Length is the conversion people reach for most — a height in cm to inches, a distance in km to miles, a measurement in feet to metres. This converter handles all of them from a single value, and the swap button flips the direction without retyping.
Exact factors, on your device
The tool uses the exact standard conversion factors, so results are accurate rather than rounded approximations. Everything is computed locally, so it works instantly and offline once the page has loaded.