Knot to Kilometer per Hour Converter
Enter a value to instantly convert between speed units.
1 Knot = 1.852 Kilometer per Hour
Key Formulas
Kilometer per Hour → Mile per Hour
mph = km/h × 0.621371Mile per Hour → Kilometer per Hour
km/h = mph × 1.60934Knot → Mile per Hour
mph = kn × 1.15078Mile per Hour → Knot
kn = mph × 0.868976Formula
km/h = kn × 1.852Nautical and aviation industries use knots, while metric nations use km/h. One knot (nautical mile per hour) equals 1.852 km/h. This conversion is essential for international operations, weather reporting (wind speeds in broadcasts), and translating maritime navigation data to metric users and modern GPS systems that display speed in km/h.
Source: NIST SP 811, Table B.8
Frequently Asked Questions
Real-World Examples
A small sailboat cruising at 5 knots = 9.26 km/h — typical light wind recreational sailing.
5 kn = 9.26 km/h
Moderate wind for sailing at 10 knots = 18.52 km/h — good conditions for most water sports.
10 kn = 18.52 km/h
Commercial ship speed of 25 knots = 46.3 km/h — international cargo vessel transit speed.
25 kn = 46.3 km/h
High-speed ferry at 100 knots = 185.2 km/h — modern hydrofoil cruise speed.
100 kn = 185.2 km/h