How do I convert miles per hour to knots?

Multiply the speed in mph by 0.868976. The factor comes from the exact definitions: 1 statute mile = 1609.344 m and 1 nautical mile = 1852 m, so 1 mph = 1609.344 / 1852 kn.

Is this converter accurate?

Yes. It uses the exact factor 1609.344 / 1852 = 0.868976242…, not a rounded approximation, so results are accurate to full floating-point precision.

Is my data sent anywhere?

No. The converter is privacy-first — all processing happens locally in your browser and nothing you type leaves your device.

Miles per Hour to Knots Converter

Convert mph to kn instantly — 1 mph = 0.868976 kn. Free, browser-only tool.

Miles per Hour to Knots Converter

This free speed converter changes miles per hour (mph) into knots (kn) and back again. A knot is one nautical mile per hour, and the exact relation is 1 mph = 1609.344 / 1852 = 0.868976 kn — so 60 mph is about 52.14 kn.

Type a value in either field — the result updates in real time. The reference table below shows common conversions at a glance. All calculations run entirely in your browser with no data sent to any server.