46 miles per hour to kilometers per hour
74.0 km/h
46 mph = 74.0 km/h.
kilometers per hour
74.0km/h
46 mph = 74.0 km/h
The short answer
How many kilometers per hour is 46 miles per hour?
46 mph = 74.0 km/h. 1 miles per hour = 1.609344 kilometers per hour, so the working is 46 × 1.609344 = 74.0.
The working
The factor below is an exact definition rather than a measurement, so nothing is approximated in the arithmetic. The only rounding on this page happens where a number is displayed.
1 miles per hour = 1.609344 kilometers per hour 46 × 1.609344 = 74.0
How much precision do you need?
Each row is the same answer cut at a different number of decimals, with what that choice costs you. Pick the shortest row whose error is smaller than whatever you are measuring with.
| Rounded to | Answer (km/h) | Off by |
|---|---|---|
| Whole number | 74 | −0.02982 |
| 1 decimal | 74.0 | −0.02982 |
| 2 decimals | 74.03 | +0.00018 |
Round trip: take 74.0 km/h back the other way and you land on 45.9815 mph — a drift of 0.0185 mph. That gap is the rounding, not the conversion.
Frequently asked questions
What is 46 miles per hour in kilometers per hour?
46 miles per hour is 74.0 kilometers per hour. 1 miles per hour = 1.609344 kilometers per hour, so the working is 46 × 1.609344 = 74.0.
How accurate is 74.0 km/h?
Rounding to 74.0 km/h and converting straight back gives 45.9815 mph, a drift of 0.0185 mph from the 46 you started with. The factor itself is exact; every bit of that difference comes from the rounding, not the conversion.
Nearby values
Any value at all
MPH to KM/H Converter
Miles per hour to kilometers per hour, with the speed limits you will actually meet.
Open the mph to km/h converter →