Feet per Second to Miles per Hour
Snapshot
1 Foot per Second equals 0.681818 Miles per Hour.
- Reference basis: This result uses fixed vessel-speed definitions anchored to knots and the active marine route.
- Example: For 5 Feet per Second, the result equals 3.409091 Miles per Hour.
Interactive conversion
Converter Calculator
Decimals: 1.5 or 1,5. Fractions: 1/2. Scientific notation: 1e3. Write 1000 without grouping separators.
0.681818 Miles per Hour (mph)
SwitchAPI and AI agent access
Feet per Second to Miles per Hour.
Machine-readable identifiers
- Conversion family
marine- Source unit
feet_per_second- Target unit
miles_per_hour
Use these identifiers in the API request. Sources and model limits also apply to software clients.
Example API request and response
POST /api/v1/convertRequest
{
"family": "marine",
"value": 1,
"from": "feet_per_second",
"to": "miles_per_hour"
}Essential response
{
"ok": true,
"conversion": {
"family": "marine",
"value": 1,
"from": "feet_per_second",
"to": "miles_per_hour",
"result": {
"raw": 0.681818181818,
"display": "0.681818"
},
"canonicalPath": "/marine/feet-per-second-to-miles-per-hour/"
}
}Explanation
Feet per Second convert into miles per hour inside the marine speed family. Formula: mph = ft/s × 0.681818181818. The same fixed relationship is used in the calculator, common values, and mirror page so route checks stay aligned.
This is useful for marine navigation, onboard operations, sounding work, or vessel-capacity checks where nautical units and engineering units need to line up without changing the underlying reference model.
Common Conversion Values
| Foot per Second (ft/s) | Miles per Hour (mph) |
|---|---|
| 1 | 0.681818 |
| 5 | 3.409091 |
| 10 | 6.818182 |
| 15 | 10.227273 |
| 20 | 13.636364 |
| 30 | 20.454545 |
| 40 | 27.272727 |