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Knots to Miles per hour (kn to mph)
Convert knots to miles per hour: 1 kn = 1.15078 mph. Exact conversion factor, formula, 22-row table and worked examples, with JSON API and MCP access.
Formula
1 kn = 1.15078 mph
miles per hour = knots × 1.150779448 — reverse: knots = miles per hour × 0.8689762419
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 kn = 5.7539 mph
- 12.5 kn = 14.3847 mph
- 100 kn = 115.078 mph
Knots to miles per hour conversion table
| Knots (kn) | Miles per hour (mph) |
|---|---|
| 1 | 1.15078 |
| 2 | 2.30156 |
| 3 | 3.45234 |
| 4 | 4.60312 |
| 5 | 5.7539 |
| 6 | 6.90468 |
| 7 | 8.05546 |
| 8 | 9.20624 |
| 9 | 10.357 |
| 10 | 11.5078 |
| 15 | 17.2617 |
| 20 | 23.0156 |
| 25 | 28.7695 |
| 30 | 34.5234 |
| 40 | 46.0312 |
| 50 | 57.539 |
| 75 | 86.3085 |
| 100 | 115.078 |
| 200 | 230.156 |
| 250 | 287.695 |
| 500 | 575.39 |
| 1000 | 1150.78 |
FAQ
How many miles per hour are in one knot?
1 kn = 1.15078 mph. 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 knots to miles per hour?
Multiply the value in knots by 1.150779448: miles per hour = knots × 1.150779448. For example, 5 kn = 5.7539 mph.
How do I convert miles per hour back to knots?
Multiply by the inverse factor 0.8689762419 (knots = miles per hour × 0.8689762419), or use the miles per hour-to-knots page.
Related conversions
- Miles per hour to knots (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=kn&to_unit=mph - MCP: server
https://tttkmbb.com/mcp, toolconvert_unitswith{"value":5,"from_unit":"kn","to_unit":"mph"} - Markdown: https://tttkmbb.com/conversion/knots-to-mph.md · JSON: https://tttkmbb.com/conversion/knots-to-mph.json (add
?value=for a result) · Units: /api/v1/units?quantity=speed - OpenAPI operationId:
convert_units. Freshness:static. Authentication: none.