Ramp Calculator Instructions

Enter the rise in the field below to calculate your ramp length. The rise is the total number of inches from lower level to upper level.

How long of a ramp should I buy?

Generally Recommended Slope Angles:

4.8-degree: This is Americans With Disabilities Act-compliant – click here for more information about Roll-A-Ramp and ADA

7-degree: Manual wheelchair users who are independent or who have an attendant with limited strength

10-degree: Manual wheelchairs with a reasonably strong attendant

12-degree: Power wheelchairs or scooters and manual chairs with a strong attendant

15-degree: Restricted space, unoccupied loading/unloading

ramp calculation