Aviation Unit Converter

Distance · Altitude · Speed · Weight · Fuel · Temperature · Pressure

Free tool – No login required – All conversions bidirectional
Coordinate Converter Unit Converter Distance & Bearing
Distance
1 NM = 1.852 km
Altitude
1 ft = 0.3048 m  |  1000 ft ≈ 305 m
Speed
1 kt = 1.852 km/h  |  100 kts ≈ 185 km/h
Weight / Mass
1 lb = 0.4536 kg  |  1 kg = 2.2046 lbs
Fuel Volume
1 US gal = 3.785 L  |  1 L = 0.264 gal
Temperature
ISA standard: 15°C at sea level
Pressure (QNH)
ISA: 1013.25 hPa = 29.92 inHg
Jet-A1 Weight ↔ Volume (lbs/L)
Jet-A1 density ≈ 0.804 kg/L at +15°C
Jet-A1 Weight ↔ Volume (kg/L)
1 kg Jet-A1 ≈ 1.244 L  |  800 kg ≈ 995 L
Quick Reference — Common Aviation Values
Distance
1 NM=1.852 km
1 NM=6076 ft
10 NM=18.52 km
100 NM=185.2 km
Altitude
500 ft=152 m
1000 ft=305 m
5000 ft=1524 m
10000 ft=3048 m
Speed
80 kts=148 km/h
100 kts=185 km/h
130 kts=241 km/h
155 kts=287 km/h

Aviation Unit Converter for Pilots and Dispatchers

This free aviation unit converter covers all essential measurement conversions used in flight planning, helicopter operations, and dispatch. Convert nautical miles to kilometres (NM to km), feet to metres for altitude cross-checks, and knots to km/h for ground briefings and ATC communications.

The Jet-A1 fuel density converter uses the ICAO standard density of 0.804 kg/L at +15°C (ISA standard day). This allows quick conversion between fuel weight in kilograms or pounds and fuel volume in litres — essential for weight-and-balance calculations and fuel uplift planning.

Pressure conversions between hPa and inHg are critical when operating across regions that use different QNH formats. Standard ISA sea-level pressure is 1013.25 hPa (29.92 inHg). Temperature conversions between °C and °F are useful for OAT cross-checks and international weather briefings. All converters are bidirectional — type in either field to convert instantly.