Speed

Convert speed between km/h, mph, knots, and more.

5 free speed tools, no signup.

• KMH to MPH ConverterConvert kilometers per hour to miles per hour instantly, and back. Based on the exact 1 mile = 1609.344 m definition.
• Knots to KMH ConverterConvert knots to kilometers per hour instantly, and back. Based on the exact 1 knot = 1.852 km/h definition.
• Knots to MPH ConverterConvert knots to miles per hour instantly, and mph back to knots. Based on 1 knot = 1 nautical mile per hour = 1.150779 mph.
• MPH to KMH ConverterConvert miles per hour to kilometers per hour instantly, and back. Based on the exact 1 mile = 1609.344 m definition.
• Speed ConverterConvert speed between km/h, mph, m/s, ft/s, and knots. Exact conversions with a one-click swap of direction.