Ramp Calculator

By HomeAdvisor

Updated August 24, 2022



Total Rise (in ft.)
Inches of Rise Per Foot

Safety is a top priority when building a wheelchair ramp and can be achieved by complying with ADA standards. This wheelchair ramp calculator helps you find the appropriate length for your ramp to avoid accidents and improve ease of use.

On This Page

  1. Measurements Needed
  2. Ramp Calculations
  3. Tips
  4. FAQs

Measurements Needed

Choose the incline based on your equipment’s user guide. The ADA standard ratio is 1:12, but please check with your local city code.

Based on the standard incline, you need to know the rise of you steps for your ADA ramp calculator. Just measure the distance from the floor to your top step in inches.

Ramp Calculations

According to ADA standard, you’ll need a ramp of 1 foot per inch of rise height. For example, if your rise is 20 inches, your ramp length is 20 feet.

Depending on the specifications of your equipment you can use other ratios.

The formula behind this second calculation is:

Total height in inches / inches of rise per foot

For example, if you need a ramp to go up 2 feet and have a ratio of 3:12, it would be 24 / 3 = 8 feet long

Installing a wheelchair ramp costs between $935 to $2,915, depending on your specs. Contact your local wheelchair ramp builder for professional installation.

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The following recommendations will help you built a ramp that is secure and endurable for your home:

  • The best material to build a ramp are aluminum, wood, steel or concrete
  • Install your ramp near the most accessible exterior door.
  • Check with your local building authority for any permits you may need.

Keep your ramp in top condition to avoid accidents and a higher cost of rebuilding.


Which properties must meet the ADA standards for handicap ramps?

Any business, organization, or commercial property must meet the ADA standards. To avoid fines, use our calculator and follow the above examples. Remember that the ramp must also have handrails to meet ADA regulations.

Does my home ramp have to meet the ADA standards?

No. The ADA standards are applicable for commercial properties using permanent ramps, not for personal use.

How are wheelchair ramps measured?

A wheelchair ramp is measured based on the slope or incline that is safe for your equipment. ADA recommends 1:12 slope.

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