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1 mile per hour to kilometers per hour

1 mile per hour = 1.60934 kilometers per hour

Rounded to a practical precision: 1.61 km/h.

How the calculation works

One mile per hour is 1.60934 kilometers per hour, so:

1 mph × 1.60934 = 1.60934 km/h

Reversing it, 1.60934 kilometers per hour ÷ 1.60934 returns 1 miles per hour.

Nearby values

Miles Per HourKilometers Per Hour
0.5 mph0.804672 km/h
1 mph1.60934 km/h
1.5 mph2.41402 km/h
2 mph3.21869 km/h
2.5 mph4.02336 km/h
3 mph4.82803 km/h

About these units

Mile per hour (mph) — Miles per hour is the road speed unit of the United States and United Kingdom.

Kilometer per hour (km/h) — Kilometres per hour is the speed unit on road signs and speedometers in most countries.

Frequently asked questions

How many kilometers per hour is 1 mile per hour?

1 mile per hour is 1.60934 kilometers per hour.

How do I convert miles per hour to kilometers per hour myself?

Multiply by 1.60934. To go back, divide by 1.60934 — or multiply by 0.621371.

Is this figure exact?

The conversion factor between the mile per hour and the kilometer per hour is fixed by definition. The figure above is rounded for readability; the converter carries full precision.

Convert other values

Full miles per hour to kilometers per hour converter · All speed converters