Our ADA ramp length calculator determines the required ramp length for your project. Our calculator also tells you the number of resting platforms that you need to have to be ADA compliant. Use our ADA Ramp Design Guidelines for a more detailed explanation of how we calculated this length.

ADA Ramp Length Calculator

ADA ramp length calculator

Elevation Height: The height from the ground up to the bottom of the door or existing walkway.

1:12 Slope: For every inch of height from the ground, you need 1 foot of ramp length.

Minimum number of resting platforms: A 5′ x 5′ (minimum) resting platform is needed every 30 feet of ramp.

+ 5′: A 5′ x 5′ (minimum) platform is needed at the top of the ramp if there is not an existing one already.

Total ramp system length in feet: Includes the minimum number of 5′ x 5′ resting platforms and the 5′ x 5′ platform at the top of the ramp.

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