How do I convert miles to nautical miles?

Multiply the distance in statute miles by 0.868976. The factor is exact: 1 statute mile = 1609.344 m and 1 nautical mile = 1852 m, so 1 mi = 1609.344 / 1852 nmi.

Is this converter accurate?

Yes. It uses the exact factor 1609.344 / 1852 = 0.868976242…, computed at full floating-point precision rather than a rounded constant.

Is my data sent anywhere?

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

Miles to Nautical Miles Converter

Convert mi to nmi instantly — 1 mi = 0.868976 nmi. Free, browser-only tool.

Miles to Nautical Miles Converter

This free length converter changes statute miles (mi) into nautical miles (nmi) and back again. A nautical mile is defined as exactly 1852 m, while a statute mile is 1609.344 m, giving the exact relation 1 mi = 0.868976 nmi.

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.