Physics, transport, and mechanical engineering · Linear speed conversions
Miles per hour to kilometers per hour converter
Convert a value from miles per hour (mph) to kilometers per hour (km/h) using the NIST SI conversion convention.
Method and scope
value(km/h) = convertValue(value(mph), mph, km/h).
Use miles per hour to kilometers per hour converter for educational calculation or a clearly scoped arithmetic estimate. Intended for Education, reference, and general measurement conversion.
Inputs- Value in miles per hour — mph
SOURCE AND LIMITS
Assumptions: The entered quantity is already expressed in the selected source unit. The conversion preserves the physical quantity and uses the stated source and target units.
Limitations: Unit conversion does not add measurement precision or uncertainty.
Method version 1.0.0 · Unit registry and result provenance are shown after calculation. This tool is limited to the documented scope.Browse all converters
Choose another physical quantity and supported unit pair.
Open the converter section ↗