Feet per Second to Miles per Hour Converter
1 foot per second ≈ 0.681818182 miles per hour
1 foot per second equals 0.681818 miles per hour
How to convert feet per second to miles per hour
Speed combines distance and elapsed time. Knots use the international nautical mile (1852 m), and mph uses the international statute mile (1609.344 m).
mph = ft/s × 0.6818181818One foot per second is 0.6818181818 miles per hour, so a single multiplication converts any value.
6.81818 mph ≈ 10 × 0.6818181818Feet per second to miles per hour conversion table
Common values in feet per second, converted to miles per hour.
| Feet per second (ft/s) | Miles per hour (mph) |
|---|---|
| 1 | 0.68181818 |
| 2 | 1.3636364 |
| 3 | 2.0454545 |
| 4 | 2.7272727 |
| 5 | 3.4090909 |
| 10 | 6.8181818 |
| 20 | 13.636364 |
| 25 | 17.045455 |
| 50 | 34.090909 |
| 100 | 68.181818 |
| 250 | 170.45455 |
| 500 | 340.90909 |
| 1,000 | 681.81818 |
About these units
foot per secondft/s
Used for projectile speeds and in US engineering.
mile per hourmph
The standard road-speed unit in the United States and the United Kingdom.
Sources and precision
Table results are rounded to 8 significant digits; formula constants may be rounded to 10. Worked example answers use 6 significant digits. The converter starts at 6 significant digits and lets you change display precision. Calculations use the stored factors without intermediate rounding. Exact unit definitions do not make an input measurement more precise; conventional and measured factors follow the assumptions stated here.