Home › Unit Conversion › Miles per hour to Feet per second
Miles per hour to Feet per second (mph to ft/s)
Convert miles per hour to feet per second: 1 mph = 1.46667 ft/s. Exact conversion factor, formula, 22-row table and worked examples, with JSON API and MCP access.
Formula
1 mph = 1.46667 ft/s
feet per second = miles per hour × 1.466666667 — reverse: miles per hour = feet per second × 0.6818181818
The factor is derived from the SI definitions of both units (base unit: m/s) as listed in NIST SP 811; results on this page are shown to 6 significant figures, the API returns up to 12.
Worked examples
- 5 mph = 7.33333 ft/s
- 12.5 mph = 18.3333 ft/s
- 100 mph = 146.667 ft/s
Miles per hour to feet per second conversion table
| Miles per hour (mph) | Feet per second (ft/s) |
|---|---|
| 1 | 1.46667 |
| 2 | 2.93333 |
| 3 | 4.4 |
| 4 | 5.86667 |
| 5 | 7.33333 |
| 6 | 8.8 |
| 7 | 10.2667 |
| 8 | 11.7333 |
| 9 | 13.2 |
| 10 | 14.6667 |
| 15 | 22 |
| 20 | 29.3333 |
| 25 | 36.6667 |
| 30 | 44 |
| 40 | 58.6667 |
| 50 | 73.3333 |
| 75 | 110 |
| 100 | 146.667 |
| 200 | 293.333 |
| 250 | 366.667 |
| 500 | 733.333 |
| 1000 | 1466.67 |
FAQ
How many feet per second are in one mile per hour?
1 mph = 1.46667 ft/s. The factor comes from the SI definitions of both units (NIST SP 811 / BIPM), so it is exact or correct to at least 10 significant figures.
What is the formula to convert miles per hour to feet per second?
Multiply the value in miles per hour by 1.466666667: feet per second = miles per hour × 1.466666667. For example, 5 mph = 7.33333 ft/s.
How do I convert feet per second back to miles per hour?
Multiply by the inverse factor 0.6818181818 (miles per hour = feet per second × 0.6818181818), or use the feet per second-to-miles per hour page.
Related conversions
- Feet per second to miles per hour (reverse)
- Speed Converter — all speed units in one tool
- Kilometers per hour to Miles per hour
- Miles per hour to Kilometers per hour
- Meters per second to Kilometers per hour
- Kilometers per hour to Meters per second
- Meters per second to Miles per hour
- Miles per hour to Meters per second
- Knots to Kilometers per hour
- Kilometers per hour to Knots
Machine access
- API:
GET https://tttkmbb.com/api/v1/convert?value=5&from_unit=mph&to_unit=ft%2Fs - MCP: server
https://tttkmbb.com/mcp, toolconvert_unitswith{"value":5,"from_unit":"mph","to_unit":"ft/s"} - Markdown: https://tttkmbb.com/conversion/mph-to-feet-per-second.md · JSON: https://tttkmbb.com/conversion/mph-to-feet-per-second.json (add
?value=for a result) · Units: /api/v1/units?quantity=speed - OpenAPI operationId:
convert_units. Freshness:static. Authentication: none.