80 Kilometres per hour to Miles per hour (80 km/h to mph)
80 Kilometres per hour equals 49.7097 Miles per hour. Below is the formula, the worked arithmetic, and what 80 km/h typically represents in everyday use.
Formula and worked answer
Formula
mph = km/h × 0.621371
Substituting 80 for km/h: 80 × 0.621371 = 49.7097 mph. The factor 0.621371 comes from the exact international definition of the Kilometre per hour relative to the Mile per hour, so this answer is precise rather than rounded.
What does 80 Kilometres per hour represent?
80 km/h (49.71 mph) is the most common European secondary-road speed limit and the figure most EU countries post on rural two-lane roads outside built-up areas. Converted to imperial the figure is 49.71 mph, which sits just under the US 50 mph rural-highway limit. The 0.29 mph gap is small enough that the two limits are practically equivalent for international driving-licence reciprocity, with US visitors in Europe and European visitors in the US able to drive against the local signage without significant calibration error. Heavy-goods vehicles in many European jurisdictions are capped at 80 km/h on motorways even where passenger cars run 130 km/h.
Values near 80 km/h
- 75 km/h=46.6028 mph
- 76 km/h=47.2242 mph
- 77 km/h=47.8456 mph
- 78 km/h=48.4669 mph
- 79 km/h=49.0883 mph
- 81 km/h=50.3311 mph
- 82 km/h=50.9524 mph
- 83 km/h=51.5738 mph
- 84 km/h=52.1952 mph
- 85 km/h=52.8165 mph
km/h to mph reference table around 80
| km/h | mph |
|---|---|
| 40 km/h | 24.8548 mph |
| 60 km/h | 37.2823 mph |
| 75 km/h | 46.6028 mph |
| 79 km/h | 49.0883 mph |
| 80 km/h | 49.7097 mph |
| 81 km/h | 50.3311 mph |
| 85 km/h | 52.8165 mph |
| 100 km/h | 62.1371 mph |
| 120 km/h | 74.5645 mph |
| 160 km/h | 99.4194 mph |
Convert a different value
Looking for a different number of Kilometres per hour? Use the full km/h to mph converter to enter any value, see the worked formula, and read the full background on the Kilometre per hour and the Mile per hour. To go the other direction, the mph to km/h converter applies the inverse factor and is the page to bookmark if you usually start in Miles per hour.