Wheelchair Ramp Length Calculator

Calculate Your Ramp Length

Height of Your Door / Entry (in inches) Measure from the ground to the bottom of your door threshold. Most homes are between 12–36 inches.

Your Results for 0 Inches of Rise:

ADA Standard (1:12 slope)
Recommended for wheelchair users —

Moderate (1:10 slope)
For shorter-distance applications —

Steep (1:8 slope)
Minimum grade — assisted use only —

💡 ADA Recommendation: For wheelchair accessibility, the ADA recommends a 1:12 slope — that's 1 foot of ramp for every 1 inch of door height.

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Understanding Wheelchair Ramp Slope Guidelines

What Does ADA Ramp Slope Mean?

The ADA (Americans with Disabilities Act) sets guidelines for wheelchair ramp slopes to ensure safe access for everyone. The standard ADA slope is 1:12, which means for every 1 inch of vertical rise, you need 12 inches (1 foot) of ramp length.

For example, if your door is 24 inches off the ground, you'll need a ramp that's at least 24 feet long to meet ADA standards.

Slope Options Explained

1:12 Slope (ADA Standard): The safest and most accessible option. Required for public buildings and recommended for all wheelchair users.
1:10 Slope (Moderate): Slightly steeper, suitable when space is limited. Works well for powered wheelchairs and scooters.
1:8 Slope (Minimum): The steepest allowed slope. Best for assisted use only and not recommended for self-propelled wheelchair users.

How to Measure Your Door Height

To use our calculator, you need to measure the vertical distance from the ground where the ramp will end to the bottom of your door threshold. Use a tape measure and measure straight down — don't follow the angle of the ground. This measurement in inches is your "rise."

Why Choose HomeAccess4U?

Once you know the ramp length you need, HomeAccess4U can help. We offer the best pricing in the industry — around $145 per linear foot, which is 20% less than most competitors. Our aluminum ramps are maintenance-free, reconfigurable, and come with a lifetime manufacturer warranty.