Feet per Second to Mile per Hour Converter
Speed · unit-converter
Convert Feet per Second to Mile per Hour with a fixed input and output unit, step-by-step formula line, and reference tables. All calculations bridge through meters per second with fixed definitions (knot, international mile, Mach 1 = ISA sea level, Beaufort WMO bands at 10 m, vacuum c, plus linear SI and imperial rate units like km/s, fpm, ips, cm/s, and mm/s).
About Feet per Second
Feet per second appears in ballistics, engineering, and some US sports contexts; it relates to imperial length per second.
About Mile per Hour
Miles per hour is used for road speeds primarily in the United States, the United Kingdom, and some other countries.
How to convert feet per second to miles per hour
1 feet per second equals 0.6818181818181819 mile per hour in this tool (via m/s):
1 fps = (0.3048 m/s ÷ 0.44704 m/s) mph = 0.6818181818181819 mph
Each feet per second carries 0.3048 m/s and each mile per hour 0.44704 m/s, so one fps equals 0.3048 ÷ 0.44704 mph.
Let v(fps) be the numeric speed in Feet per Second (fps), and v(mph) in Mile per Hour (mph). Then:
v(mph) = v(fps) × (0.3048 / 0.44704)
Equivalently, divide by how many fps fit into one mph (m/s per mph divided by m/s per fps):
v(mph) = v(fps) ÷ 1.4666666666666666
Examples
Example #1: Convert 10 fps to mile per hour
10 fps = 10 fps × (0.3048/0.44704) mph = 6.8181818182 mph
10 fps = 10 fps ÷ 1.4666666666666666 = 6.8181818182 mph
Example #2: Convert 50 fps to mile per hour
50 fps = 50 fps × (0.3048/0.44704) mph = 34.0909090909 mph
50 fps = 50 fps ÷ 1.4666666666666666 = 34.0909090909 mph
Summary
To convert Feet per Second to Mile per Hour, multiply the value in fps by (0.3048 m/s per fps) / (0.44704 m/s per mph). Equivalently: value_mph = value_fps × (0.3048 / 0.44704). Numerically, 1 fps equals 0.6818181818181819 mph.
Relationship context
Both Feet per Second and Mile per Hour are expressed as fixed multiples of meters per second in this tool. Converting multiplies by the ratio of m/s per fps to m/s per mph, so results stay consistent with SI-based definitions (international mile, knot, feet, etc.).
Conversion tables
| Feet per Second (fps) | Mile per Hour (mph) |
|---|---|
| 0.1 | 0.0681818182 |
| 1 | 0.6818181818 |
| 2 | 1.3636363636 |
| 3 | 2.0454545455 |
| 4 | 2.7272727273 |
| 5 | 3.4090909091 |
| 6 | 4.0909090909 |
| 7 | 4.7727272727 |
| 8 | 5.4545454545 |
| 9 | 6.1363636364 |
| Feet per Second (fps) | Mile per Hour (mph) |
|---|---|
| 10 | 6.8181818182 |
| 20 | 13.6363636364 |
| 30 | 20.4545454545 |
| 40 | 27.2727272727 |
| 50 | 34.0909090909 |
| 60 | 40.9090909091 |
| 70 | 47.7272727273 |
| 80 | 54.5454545455 |
| 90 | 61.3636363636 |
| 100 | 68.1818181818 |