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30 miles per hour to kilometers per hour

30 miles per hour = 48.28032 kilometers per hour

Rounded to a practical precision: 48.3 km/h.

How the calculation works

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

30 mph × 1.60934 = 48.28032 km/h

Reversing it, 48.28032 kilometers per hour ÷ 1.60934 returns 30 miles per hour.

Nearby values

Miles Per HourKilometers Per Hour
26 mph41.84294 km/h
27 mph43.45229 km/h
28 mph45.06163 km/h
29 mph46.67098 km/h
30 mph48.28032 km/h
31 mph49.88966 km/h
32 mph51.49901 km/h
33 mph53.10835 km/h
34 mph54.7177 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 30 miles per hour?

30 miles per hour is 48.28032 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