SpeedFeet per Second to Miles per Hour

Feet per Second to Miles per Hour

Methodology·How We Verify

Snapshot

1 Foot per Second equals 0.681818 Miles per Hour.

Reference basis: This conversion uses fixed meters-per-second-based speed definitions.
Example: For 0.5 Feet per Second, the result equals 0.340909 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)

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API and AI agent access

Feet per Second to Miles per Hour.

Machine-readable identifiers

Conversion family: speed
Source unit: foot_per_second
Target unit: mile_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/convert

Request

{
  "family": "speed",
  "value": 1,
  "from": "foot_per_second",
  "to": "mile_per_hour"
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "speed",
    "value": 1,
    "from": "foot_per_second",
    "to": "mile_per_hour",
    "result": {
      "raw": 0.6818181818181819,
      "display": "0.681818"
    },
    "canonicalPath": "/speed/feet-per-second-to-miles-per-hour/"
  }
}

API, OpenAPI and WebMCP documentation

Explanation

Multiply by seconds per hour and divide by feet per mile to convert ft/s into mph.

Method & Reference

Method basis: exact conversion formula shown in Snapshot.
Applied factor: 1 Foot per Second = 0.681818 Miles per Hour (using fixed meters-per-second-based speed definitions).
Consistency rule: calculator output and table values use the same constants and rounding policy.

Common Conversion Values

Feet per Second (ft/s)	Miles per Hour (mph)
1/2	0.340909
1	0.681818
2	1.363636
5	3.409091
10	6.818182
20	13.636364
30	20.454545
60	40.909091
100	68.181818
120	81.818182

Questions & answers

Frequently Asked Questions

What is 1 foot per second in miles per hour?

1 Foot per Second equals 0.681818 Miles per Hour on this page.