True Airspeed Calculator
Free calculate true airspeed (tas) from indicated airspeed (ias) using altitude, temperature, and pressure corrections.
Input Parameters
Standard: -5°C at 10,000 ft
Results
Enter parameters to calculate true airspeed
True Airspeed Formula
TAS Calculation
TAS = IAS × √(ρ₀ / ρ)
Where ρ = air density at altitude
Density Ratio
ρ/ρ₀ = (P/P₀) × (T₀/T)
From ideal gas law
Standard Atmosphere
- • Sea level: 15°C, 1013.25 hPa
- • Lapse rate: -6.5°C per 1000m
- • Pressure decreases with altitude
Applications
- • Flight planning
- • Navigation
- • Fuel calculations
- • Performance analysis