BOAT / MARINE
Boat Speedometer (Knots)
Measure your speed over water in knots using GPS — accurate, free, and nothing is uploaded. Great when you don't have a marine speed log.
0
knots
GPS: —
0–100 km/h test
Wait for a stronger GPS signal for an accurate time.
Max0.0 knots
Average0.0 knots
Distance0.00 nmi
Heading—
Altitude—
Odometer0 m
Tap Start and allow location. Works best outdoors with a clear view of the sky. Your location stays on your device — nothing is uploaded.
More speedometer options
Speedometer in km/h →Speedometer in mph →0 to 100 km/h Acceleration Test →0 to 60 mph Acceleration Test →Speedometer in Knots →Bike & Motorcycle Speedometer →Cycling Speedometer →Train Speed Test — How Fast Is Your Train? →Car Speedometer — GPS Speed Test →GPS Speed Test →Running Speedometer — Track Your Pace →Walking Speedometer →Bus Speed Test — How Fast Is Your Bus? →Flight Speed — How Fast Is Your Plane? →Truck Speedometer — GPS Speed for Lorries →Metro & Local Train Speed Test →
Frequently asked questions
Does it show speed in knots?
Yes — this page starts in knots, the standard marine speed unit. You can switch to km/h or mph too. Everything runs in your browser — your location never leaves your device.
Does GPS work on the water?
Yes — open water gives an excellent clear view of the sky, so GPS speed is very accurate for boating.