Bank Angle, G-Force & Stall Speed Calculator
Calculate load factor G = 1/cos(θ), accelerated stall speed, and turn radius.
Last reviewed by the myCalculator Editorial Team
Input Parameters
Calculation Results
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Formula & How Bank Angle, G-Force & Stall Speed Calculator Works
In a steady, level, coordinated turn the wings must produce more lift than in straight flight, and the load factor is n = 1 ÷ cos(bank angle). At 60° of bank the load factor is 1 ÷ 0.5 = 2.0 g. Stall speed rises with the square root of the load factor, so Vs(turn) = Vs × √n. An aircraft that stalls at 50 knots in level flight stalls at 50 × √2 = about 71 knots in a 60° turn, and at about 59.5 knots in a 45° turn (n = 1.41). This is why steep turns at low speed, such as on base turn to final, are dangerous. Use the figures for study and planning, and always follow the aircraft flight manual for real operations.
- Enter Bank Angle (degrees °): Input your target parameter value.
- Enter Level Flight Stall Speed (kts): Input your target parameter value.
- Enter True Airspeed (TAS - kts): Input your target parameter value.
- Apply Formula: Calculate using
Load Factor G = 1 / cos(θ) | Stall Speed = Vs × √G. - Review Results: View exact computed answers, metrics, and worked mathematical proofs.
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MyCalculator.com.au. (2026). Bank Angle, G-Force & Stall Speed Calculator. Retrieved October 24, 2026, from https://www.mycalculator.com.au/calculators/physics/bank-angle-gforce
MyCalculator.com.au. (2026) 'Bank Angle, G-Force & Stall Speed Calculator'. Available at: https://www.mycalculator.com.au/calculators/physics/bank-angle-gforce (Accessed: 24 October 2026).
Frequently Asked Questions (FAQs)
What is the G-force at a 60 degree bank angle?
At a 60° bank angle in a level coordinated turn, the load factor is exactly 2.0 G.
How does bank angle affect stall speed?
Stall speed increases proportionally with the square root of the load factor: Vs(bank) = Vs(level) × √G.
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