Knot to Mile/Hour (kn to mph)
Result
1.150779448 Mile/Hour
Formula
mph = kn × 1.150779448
1 kn = 1.150779448 mph, and 1 mph = 0.8689762419 kn.
Speed units are a length divided by a time: 1 km/h = 1/3.6 m/s, 1 mph = 0.44704 m/s exactly, and 1 knot = 1 nautical mile per hour = 1,852/3,600 m/s.
Worked examples
- 1 kn × 1.150779448 = 1.1507794 mph
- 10 kn × 1.150779448 = 11.507794 mph
- 100 kn × 1.150779448 = 115.07794 mph
Common mistakes
- A knot is a nautical mile per hour, so 1 kn = 1.852 km/h and 1.15078 mph — not 1 mph.
- Weather services quote wind in km/h, m/s, mph or knots depending on country; check the unit before comparing forecasts.
Knot to Mile/Hour table
| Knot (kn) | Mile/Hour (mph) |
|---|---|
| 1 | 1.1507794 |
| 2 | 2.3015589 |
| 5 | 5.7538972 |
| 10 | 11.507794 |
| 20 | 23.015589 |
| 50 | 57.538972 |
| 100 | 115.07794 |
| 1,000 | 1,150.7794 |
The units
- Knot (kn)
- Knot: one nautical mile (1,852 m) per hour, used in aviation and shipping.
- Mile/Hour (mph)
- Miles per hour: exactly 0.44704 m/s.
Sources for these factors
- Guide for the Use of the International System of Units (SP 811), Appendix B: conversion factors — NIST
- Handbook 44 (2024), Appendix C: General Tables of Units of Measurement — NIST
Last reviewed against these sources. An automated check recomputes every factor from its definition on each build. How we check accuracy