Airspeed Converter
Convert between IAS, CAS, EAS, TAS, and Mach number at any altitude and temperature. Also shows mph and km/h equivalents.
Inputs
kt
ft
GA cruise: 3,000–12,000 ft, Airline: FL250–FL410
°C
Results
Indicated Airspeed (IAS)
120 kt
True Airspeed (TAS)
129 kt
Mach Number
0.199
Calibrated Airspeed (CAS)120 kt
Equivalent Airspeed (EAS)109 kt
TAS (mph)149 mph
TAS (km/h)239 km/h
Indicated Airspeed (IAS)
120 kt
True Airspeed (TAS)
129 kt
Mach Number
0.199
How to Use This Calculator
- Select which airspeed type you want to convert from (IAS, CAS, TAS, or Mach).
- Enter the speed value.
- Enter pressure altitude and outside air temperature.
- All equivalent airspeeds are calculated instantly.
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