Convert Feet per Second to Miles per Hour
Convert Feet per Second to Miles per Hour instantly. 1 Foot per Second (ft/s) equals 0.6818 Miles per Hour (mph).
Feet per Second to Miles per Hour conversion table
| Feet per Second (ft/s) | Miles per Hour (mph) |
|---|---|
| 1 ft/s | 0.6818 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 |
| 20 ft/s | 13.6364 mph |
| 50 ft/s | 34.0909 mph |
| 100 ft/s | 68.1818 mph |
| 500 ft/s | 340.9091 mph |
| 1,000 ft/s | 681.8182 mph |
1 Foot per Second = 0.6818 Miles per Hour · multiply Feet per Second by 0.6818
About converting Feet per Second to Miles per Hour
Feet per Second (ft/s) and Miles per Hour (mph) are both units of speed, so converting between them is a single multiplication: multiply your Feet per Second figure by 0.6818. Ten Feet per Second comes to 6.8182 Miles per Hour, and a hundred works out at 68.1818 Miles per Hour.
Rule of thumb: going from Feet per Second to Miles per Hour divides, so the figure always shrinks — it takes about 1.4667 Feet per Second to make a single Mile per Hour. If your answer came out bigger, you have the conversion the wrong way round.
What is a Foot per Second?
Feet per second is a working unit rather than a public one. It appears wherever American engineering needs a speed that pairs with dimensions already given in feet — conveyor and belt speeds, water flowing in a channel, air velocity in a duct — and above all in ballistics, where muzzle velocity has always been quoted in ft/s. It is also the unit US physics problems fall back on when they are posed in imperial, so it feels oddly familiar to anyone who learned mechanics from an American textbook. On a road sign it appears essentially never.
What is a Mile per Hour?
Miles per hour is the road-speed unit that refused to die. It is posted on the signs and printed on the speedometers of the United States and the United Kingdom, two countries that otherwise use metric for most scientific and industrial work — a split that leaves British drivers buying fuel in litres while measuring their speed in miles. It has a second life in the media of both countries, where wind gusts, pitch speeds and tennis serves are quoted in mph out of pure habit rather than for any technical reason.
To put both in perspective: a rifle bullet leaves the muzzle at roughly 3,000 feet per second, while a US interstate limit is typically 65 to 75 miles per hour.
The converter above updates as you type, and the table lists common values for quick reference. Need the opposite direction? Use the Miles per Hour to Feet per Second converter, or browse all Speed converters.
Frequently asked questions
How many Miles per Hour are in one Foot per Second?
There are 0.6818 Miles per Hour in one Foot per Second.
How do I convert Feet per Second to Miles per Hour?
Multiply the number of Feet per Second by 0.6818. For example, 10 Feet per Second = 6.8182 Miles per Hour.
What is 100 Feet per Second in Miles per Hour?
100 Feet per Second is equal to 68.1818 Miles per Hour.
How do I convert Miles per Hour to Feet per Second?
Multiply the Miles per Hour value by 1.4667 (or divide by 0.6818).
Is this Feet per Second to Miles per Hour conversion exact?
The definition is exact — Feet per Second and Miles per Hour are both fixed against the same base by international agreement — but the decimal shown here is rounded for readability, because the true ratio does not terminate. For engineering or scientific work, carry more decimal places than this page displays.
What is a Foot per Second?
Feet per second is a working unit rather than a public one. It appears wherever American engineering needs a speed that pairs with dimensions already given in feet — conveyor and belt speeds, water flowing in a channel, air velocity in a duct — and above all in ballistics, where muzzle velocity has always been quoted in ft/s. It is also the unit US physics problems fall back on when they are posed in imperial, so it feels oddly familiar to anyone who learned mechanics from an American textbook. On a road sign it appears essentially never.
What is a Mile per Hour?
Miles per hour is the road-speed unit that refused to die. It is posted on the signs and printed on the speedometers of the United States and the United Kingdom, two countries that otherwise use metric for most scientific and industrial work — a split that leaves British drivers buying fuel in litres while measuring their speed in miles. It has a second life in the media of both countries, where wind gusts, pitch speeds and tennis serves are quoted in mph out of pure habit rather than for any technical reason.