Convert Feet per second to miles per hour
1 foot per second = 0.681818 miles per hour · mph = ft/s ÷ 1.466666667
When you need this conversion
This conversion goes from feet per second, used in ballistics and US engineering, to miles per hour, the road speed unit in the US and UK. Both measure the same physical quantity, so the conversion is exact — the difference is which unit your source, tool, or region happens to use.
Feet per second to miles per hour conversion table
| Feet per second (ft/s) | Miles per hour (mph) |
|---|---|
| 1 ft/s | 0.681818 mph |
| 2 ft/s | 1.3636 mph |
| 3 ft/s | 2.0455 mph |
| 5 ft/s | 3.4091 mph |
| 10 ft/s | 6.8182 mph |
| 15 ft/s | 10.2273 mph |
| 20 ft/s | 13.6364 mph |
| 25 ft/s | 17.0455 mph |
| 50 ft/s | 34.0909 mph |
| 75 ft/s | 51.1364 mph |
| 100 ft/s | 68.1818 mph |
| 250 ft/s | 170.45 mph |
| 500 ft/s | 340.91 mph |
| 1,000 ft/s | 681.82 mph |
The formula
mph = ft/s ÷ 1.466666667Because both units measure speed, the conversion is a single multiplication by a fixed factor. That factor never changes, so the result is exact.
Convert the other way
Miles per hour to feet per second →Related speed conversions
- Kilometers per hour to miles per hour
- Kilometers per hour to knots
- Miles per hour to kilometers per hour
- Knots to kilometers per hour
- Meters per second to miles per hour
- Feet per second to meters per second
- Feet per second to kilometers per hour
- Feet per second to knots
- Feet per second to mach
- Knots to miles per hour
- Mach to miles per hour
- Meters per second to kilometers per hour
Frequently asked questions
- How many miles per hour are in a foot per second?
- There are 0.681818 miles per hour in 1 foot per second. The formula is mph = ft/s ÷ 1.466666667.
- How do you convert feet per second to miles per hour?
- Use the formula mph = ft/s ÷ 1.466666667. For example, 10 feet per second equals 6.8182 miles per hour.
- Is the feet per second to miles per hour conversion exact?
- Yes. Feet per second and miles per hour are both units of speed, related by an exact defined factor. Displayed results are rounded for readability.
- What is ft/s short for?
- ft/s is the standard symbol for foot per second. mph is the symbol for mile per hour.