🌬️ Knots to kph Converter
Translate maritime or aviation speeds into the metrics used on land.
Helpful for pilots, sailors, and weather enthusiasts who need to swap between knots, kilometers per hour, miles per hour, and meters per second.
15 Knots (kt) equals
27.78 Kilometers per Hour (km/h)
Other Units
Meters per Second (m/s)
7.717
Miles per Hour (mph)
17.26
Knots (kt)
15
Feet per Second (ft/s)
25.317
Centimeters per Second (cm/s)
771.67
How to Use This Calculator
Enter the known speed
Type the speed value measured in knots, km/h, mph, or m/s.
Select destination units
Choose kilometers per hour or any other unit to see the converted value.
Check additional results
Use the quick reference to capture other common speed units simultaneously.
Formula
1 knot = 1 nautical mile per hour = 1.852 km/h
1 knot ≈ 1.15078 mph
1 knot ≈ 0.514444 m/s
Conversions route through meters per second to keep calculations consistent.
Use the formula breakdown to confirm the calculation logic or perform the conversion manually if needed.
Full Description
Knots are standard in maritime navigation and aviation, while road traffic data typically uses km/h or mph. This converter keeps everyone on the same page by translating between those systems instantly.
The underlying math uses exact nautical mile definitions: one nautical mile equals 1,852 meters. That ensures alignment with navigation charts, weather bulletins, and flight plans.
Keep it handy for trip planning, cross-discipline communication, or interpreting weather advisories in different units.
Frequently Asked Questions
Is a knot the same as a nautical mile per hour?
Yes. By definition, 1 knot equals 1 nautical mile per hour.
Do pilots still use knots?
Yes. Airspeed indicators and ATC communications use knots worldwide, making unit conversion essential for ground crews.
Can I convert negative values?
Negative speeds represent direction (e.g., headwinds). The calculator accepts them mathematically.
How precise are the constants?
Conversions rely on internationally recognized exact values, so results align with nautical and aviation standards.