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Tools / Boating Calculators / Knots to km/h Converter

Conversions

Knots to km/h Converter

Convert boat speed between knots and kilometres per hour, with metres per second and miles per hour shown as useful secondary values.

Enter your figures below. Results update automatically as you make changes.

Boat speed

i

Enter speed through the water or over the ground, provided all compared values use the same basis.

Enter speed through the water or over the ground, provided all compared values use the same basis.

Input unit

Converted speed

Knots: 6.00 kt
Kilometres per hour: 11.11 km/h
Metres per second: 3.09 m/s
Miles per hour: 6.90 mph

How it works

One knot is one nautical mile per hour. Because one nautical mile is exactly 1.852 kilometres, knot values are multiplied by 1.852.

Formula

km/h = knots × 1.852 · knots = km/h ÷ 1.852

Example

6 kt equals 11.112 km/h, approximately 3.09 m/s and 6.90 mph.

Important notes

Knots are already a speed unit; write 6 kt or 6 knots, not 'knots per hour'.

Related calculators

Nautical Mile Converter

Convert nautical miles, kilometres, metres and statute miles.

Hull Speed Calculator

Estimate displacement hull speed from waterline length.

VMG Calculator

Calculate velocity made good toward a waypoint or mark.

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