Length
Speeds, meters and feet
The same factor converts speeds, because only the distance part changes. The other two expand a distance into smaller units.
The Formula
km/h = mph x 1.609344, m = mi x 1609.344, ft = mi x 5280
The same factor converts speeds, because only the distance part changes. The other two expand a distance into smaller units.
| Symbol | Meaning | Unit | Notes |
|---|---|---|---|
| mph | Speed in miles per hour | miles per hour | 60 mph is 96.56064 km/h by this factor. |
| km/h | Speed in kilometers per hour | kilometers per hour | Convert distance and speed together, then compute time from matching units. |
| ft | Distance in feet | feet | 5280 feet to the statute mile, so 26.2 mi is 138336 ft. |
What Each Symbol Means
mphmiles per hour
Speed in miles per hour
60 mph is 96.56064 km/h by this factor.
km/hkilometers per hour
Speed in kilometers per hour
Convert distance and speed together, then compute time from matching units.
ftfeet
Distance in feet
5280 feet to the statute mile, so 26.2 mi is 138336 ft.
See It Worked With Real Numbers
A formula on its own does not tell you which number goes where. The how to convert miles to kilometers page applies this equation to a concrete case, shows every intermediate step, and names the mistakes that produce a wrong answer even when the algebra is right.
Where This Formula Appears
This equation is the working core of How To Convert Miles To Kilometers, filed under Unit Conversion. Every number the guide produces comes from substituting into this one line.