How to Use the Turning Radius Calculator

A Turning Radius Calculator estimates the radius of the smallest possible circular turn a vehicle can make, based on its wheelbase and maximum steering angle.

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What It Does:

The turning radius is essential for determining how tightly a vehicle can turn, critical in vehicle design, parking lot planning, and maneuverability assessments. This calculator uses the formula:

cppCopiarEditarTurning Radius = Wheelbase / tan(Steering Angle)

Where:

• Wheelbase is the distance between the front and rear axles (in meters).
• Steering Angle is the maximum angle the wheels can turn (in degrees).

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Steps to Use:

1. Enter the vehicle’s wheelbase (in meters).
2. Enter the maximum steering angle (in degrees, typically between 25° and 45° for most cars).
3. Click the “Calculate Turning Radius” button.
4. The result will show you the turning radius in meters.

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Example:

For a car with a 2.8-meter wheelbase and a 35° steering angle, the calculator might return a turning radius of about 3.99 meters, indicating a relatively tight turning circle.

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Turning Radius Calculator FAQ

Q1: What is a typical turning radius for a passenger car?
A: Most cars have a turning radius between 4.5 and 6 meters. Compact vehicles often turn more tightly.

Q2: What units should I use?
A: Enter the wheelbase in meters and the steering angle in degrees. The result will be in meters.

Q3: Why can’t I input 90° for the steering angle?
A: Because tan(90°) is undefined. Real vehicles also never turn their wheels a full 90 degrees.

Q4: Does this calculator account for Ackermann steering geometry?
A: No. This is a simplified calculation assuming a single steering angle. Real-world turning radius also depends on track width and suspension design.

Q5: Is this calculator useful for trucks or heavy vehicles?
A: Yes! You can input the actual wheelbase and steering angle of larger vehicles to estimate their maneuverability.