Wheelchair Ramp Length
Determine how long a wheelchair ramp should be. Enter the vertical rise in inches and a slope ratio (1:X) to calculate the ramp length in feet. A 1:12 slope is often recommended for accessibility.
Always verify local building codes and consult professionals for permanent installations.
Examples
- 24 in rise at 1:12 slope ⇒ 24 ft ramp
- 30 in rise at 1:10 slope ⇒ 25 ft ramp
FAQ
What slope ratio is recommended?
A 1:12 slope is standard for wheelchair accessibility.
How do I measure the rise?
Measure from ground level to the top surface of the doorway or landing.
Do I need landings for long ramps?
Many codes require level landings or switchbacks every 30 feet of ramp run.
Can I use a steeper slope?
Steeper slopes make manual wheelchair travel difficult and may violate accessibility rules.
Additional Information
- Length = rise × ratio ÷ 12 converts inches of rise into feet of ramp run.
- ADA guidelines suggest a maximum slope of 1:12 for unoccupied wheelchair ramps.