Wheelchair Ramp Slope and Percent of Grade Information

Percent of Grade Formula

To determine the percent of grade: divide rise by the run of ramp. Run is not the length of the ramp. The distance horizontally (not along the slope) from the top of the ramp to the bottom.
(eg: 6" rise / 52" ramp run = .115 or 11.5% grade)

Wheelchair Ramp Graphic

wheelchair ramp slope chart
green block Green blocks represent rise/run combinations that meet building codes and accessibility guidelines

yellow block Yellow blocks represent rise/run combinations the may be suitable for portable ramps (manuafacturers' guide)

orange block Orange blocks represent rise/run combinations that should only be used for unoccupied scooters and wheelchairs

red block Red blocks represent rise/run combinations that should never be used for mobility devices

The chart is available as a pdf download for printing and saving. Download Ramp Slope Chart

Click here to use our ramp length calculator.





Notice: Information on the MobilityBasics.ca web site is for informational purposes only and not meant to be a substitute for the advice provided by physicians, therapists or other medical professionals. All information is general in nature and may not necessarily apply to everyone as individual needs may vary. For more information see our terms.

Products displayed or discussed on this web site are presented to provide examples of products discussed and are not specifically endorsed by mobilitybasics.ca. We do not receive any compensation for displaying or presenting any products.

  • website security
  • CSSD Logo
  • IBDE Logo
  • Google Analytics Alternative
  • Basic Web Design