Ackermann Geometry Calculator

Calculate Ackermann steering geometry angles for inner and outer wheels based on wheelbase and track width.

Input Parameters

Results

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Inner Wheel Angle
°
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Turn Radius (center)
ft
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Ackermann Angle
°
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Inner-Outer Difference
°
Note: Full Ackermann geometry ensures zero tire scrub at low speeds. Race cars often use less than 100% Ackermann because at high speed, slip angles reduce the need for geometric correction.

Reference

Turn Radius = Wheelbase / tan(Outer Angle) + Track/2 Ideal Inner = arctan(Wheelbase / (R_center - Track/2)) Ackermann Angle = arctan(Track / (2 x Wheelbase)) 100% Ackermann = full geometric correction 0% = parallel steer (race cars often use < 100%)