Speed and Fuel Economy Converter
Convert km/h, mph and knots, or compare L/100 km, km/L and US or imperial mpg.
Common conversions
| Starting value | Converted value |
|---|---|
| 100 km/h | 62.13711922 mph |
| 1 kn | 1.852 km/h |
| 8 L/100 km | 29.40182292 mpg (US) |
| 35 mpg (imp) | 8.070883895 L/100 km |
Conventions and assumptions
- Speed and fuel economy are separate dimensions and cannot be converted into each other.
- Fuel-economy conversions are reciprocal, so zero is invalid.
- US and imperial gallons differ; choose the mpg convention explicitly.
Results use the displayed constants and round only for presentation. Conversion logic runs locally; RooBucks does not send your entered quantity to an external service.