1:15 Ramp Length Calculator

Many commercial and government buildings are now asking that ramps have a 1:15 slope for all permanent ramps. This calculator provides the ramp length needed for the rise or elevation you input based on a 1:15 slope.

Most building codes still require a minimum slope of 1:12 and you can use our 1:12 calculator for these ramps.

The permanent ramp result in the calculator below meets or exceeds most building and accessibility codes in Canada and the ADA requirements for the USA.

Be aware that many wheelchair and scooter manufacturers advise the maximum slope their products can safely negotiate. For safety, do not exceed these recommendations.

*Please note that ramps cannot have any continuous sections more than 30 feet long.

For ramps more than 30 feet long level landings must be added as needed to meet this standard (eg. A 45 foot ramp would need one landing no more than 30 feet from each end. A 90 foot ramp would need two landings 30 feet apart).

Level turns count as landings.

For more information on ramp slopes please visit our ramp slope page

Information on Specific Products

Wheelchair Ramps at factorydirectmedical.com

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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.

Enter the Rise (in inches): (Vertical difference between the bottom level and top level)	inches

Minimum Required Permanent Ramp Length (1:15 slope, results in feet) Suitable for wheelchair, scooter and walker users)	feet
Minimum Occupied Portable Ramp Length (2:15 slope, results in feet): (Wheelchair/scooter user is sitting in seat) Ensure that the mobility device will be safe at the 2:15 slope. All mobility devices have their own gradient limits.	feet
Minimum Unoccupied Portable Ramp Length (3:15 slope, results in feet): (Wheelchair/scooter user is NOT sitting in seat)	feet