Convert miles per hour to feet per second
Instant, accurate mph → ft/s conversion with a live converter, table and formula.
1 miles per hour = 1.46667 feet per second
1 feet per second = 0.681818 miles per hour
miles per hour to feet per second table
| miles per hour (mph) | feet per second (ft/s) |
|---|---|
| 0.5 | 0.733333 |
| 1 | 1.46667 |
| 2 | 2.93333 |
| 5 | 7.33333 |
| 10 | 14.6667 |
| 20 | 29.3333 |
| 50 | 73.3333 |
| 100 | 146.667 |
| 500 | 733.333 |
| 1000 | 1466.67 |
Formula
feet per second = miles per hour × 1.46667.
Example
10 miles per hour = 14.6667 feet per second.
What is a miles per hour?
Miles per hour (mph) is the imperial speed unit used in the US and UK.
What is a feet per second?
Feet per second (ft/s) measures speed in imperial units.
Real-world reference points
Walking is ~5 km/h (3 mph); city driving ~50 km/h (31 mph); a jet cruises near 900 km/h (560 mph).
| Reference | miles per hour | feet per second |
|---|---|---|
| Brisk walk | 3.36 mph | 4.92 ft/s |
| Sprinting world record (avg) | 23.35 mph | 34.25 ft/s |
| City speed limit (50 km/h) | 31.07 mph | 45.57 ft/s |
| Highway cruising (100 km/h) | 62.14 mph | 91.14 ft/s |
| Commercial jet cruise | 559 mph | 820 ft/s |
Mistakes to avoid with speed conversions
- Dividing instead of multiplying by 3.6 when moving between m/s and km/h.
- Assuming knots equal mph — a knot is ~15% faster (nautical miles per hour).
- Comparing GPS speed (ground speed) with a car's speedometer, which reads slightly high by design.
Frequently asked questions
How many feet per second in a miles per hour?+
1 miles per hour = 1.46667 feet per second.
How do I convert miles per hour to feet per second?+
Enter the value in the miles per hour box above and the feet per second value appears instantly. You can also type in the feet per second box to convert the other way.
Is this mph to ft/s converter free?+
Yes — it is 100% free, needs no sign-up, and runs entirely in your browser.