Knot to Kilometer/Hour (kn to km/h)
Result
1.852 Kilometer/Hour
Formula
km/h = kn × 1.852
1 kn = 1.852 km/h, and 1 km/h = 0.5399568035 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 × 1.852 = 1.852 km/h
- 10 kn × 1.852 = 18.52 km/h
- 25 kn × 1.852 = 46.3 km/h
- 140 kn × 1.852 = 259.28 km/h
Things to know about kn to km/h
- One knot is exactly 1.852 km/h (one nautical mile per hour) and 1.15078 mph.
- Aircraft airspeeds are in knots: a typical airliner landing speed of 140 kn is 259 km/h.
Knot to Kilometer/Hour table
| Knot (kn) | Kilometer/Hour (km/h) |
|---|---|
| 1 | 1.852 |
| 2 | 3.704 |
| 5 | 9.26 |
| 10 | 18.52 |
| 20 | 37.04 |
| 25 | 46.3 |
| 50 | 92.6 |
| 100 | 185.2 |
| 140 | 259.28 |
| 1,000 | 1,852 |
The units
- Knot (kn)
- Knot: one nautical mile (1,852 m) per hour, used in aviation and shipping.
- Kilometer/Hour (km/h)
- Kilometres per hour: 1 km/h = 1/3.6 m/s ≈ 0.27778 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