Nautical and Aviation Unit Converter

Nautical and Aviation Unit Converter

Convert common boating and aviation references among nautical miles, statute miles, kilometers, feet, meters, flight levels, knots, mph, km/h, hPa, inHg, mmHg, and pascals. Units are visibly grouped and incompatible dimensions are rejected. Results are a reference only—not a substitute for operational instruments, charts, approved flight planning, weather, or safety decisions.

Method and assumptions

Figur converts within four independent groups: distance through meters, altitude through meters, speed through m/s, and pressure through pascals. It rejects every cross-group pair.

• 1 nautical mile is exactly 1852 m; 1 statute mile is exactly 1609.344 m; and 1 foot is exactly 0.3048 m.
• A flight level is displayed as hundreds of feet for reference conversion; operational use depends on standard pressure, altimetry, and applicable procedures.
• inHg uses the conventional definition at 0 °C; the numerical result is not a live weather observation or current altimeter setting.

Educational unit reference only. It does not replace operational instruments, charts, NOTAMs, weather data, approved flight or navigation planning, or safety decisions.

Sources and references

• BIPM: SI Brochure, 9th edition
• NIST SP 811: Guide for the Use of the SI
• FAA Pilot’s Handbook of Aeronautical Knowledge

Frequently asked questions