Verify before flight. Check the POH/AFM for aircraft-specific limits and performance.
Maneuvers & Turns
Turn Radius Calculator
Calculate aircraft turn radius from true airspeed and bank angle, with turn diameter and rate of turn.
kt
deg
Turn radius—
Turn diameter—
Rate of turn—
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100 kt TAS at 25° bank
At 100 kt TAS and 25° bank, r = V² / (g × tan(bank)) gives about 0.36 NM radius and 0.73 NM diameter.
Doubling TAS at the same bank quadruples radius. The still-air circle becomes a different ground track in wind.
Formula and method
Coordinated turn radius is determined by true airspeed and bank angle.