Equivalent Airspeed Calculator
Convert between EAS, CAS, and TAS with compressibility corrections.
Airspeed Definitions
- CAS: IAS corrected for instrument and position error
- EAS: CAS corrected for compressibility (adiabatic flow)
- TAS: EAS corrected for density altitude (actual speed through air)
Key Relationships
EAS to TAS:
TAS = EAS / sqrt(sigma)
CAS to EAS:
EAS = CAS x f(M, delta)
f = compressibility correction factor