Calculate ramp slope ratio, percentage, and angle for ADA compliance.
Step Dimensions
Slope Analysis
Building a Ramp?
Enter the rise and run to check the slope and safety compliance.
About this calculator
Overview
This calculator helps you design ramps that are safe and accessible. It calculates the slope based on the rise and run and checks for ADA (Americans with Disabilities Act) compliance.
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Pro Tips
For outdoor ramps in snowy climates, a gentler slope like 1:16 or 1:20 is recommended.
Landings at the top and bottom of ramps should be at least 60 inches long.
Handrails are required on both sides of ramps with a rise greater than 6 inches.
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Fun Facts
"ADA requires a maximum slope of 1:12 for wheelchair ramps, meaning 1 foot of rise for every 12 feet of run."
"The maximum run for a single ramp segment is 30 feet before a landing is required."
"A 1:12 slope is equivalent to 4.8 degrees or an 8.33% grade."
