Ramp Run and Slope Calculator
Calculate required horizontal ramp length and slope percentage from vertical rise and a selected slope ratio.
Formula
Planning estimate. Check product specifications and local requirements before purchasing.
Worked example: Ramp Length Calculator
Measurements in this example
| Vertical rise | 60 cm |
|---|---|
| Horizontal run per unit rise | 12 :1 |
Calculated quantities
| Required horizontal run | 7.2 m |
|---|---|
| Slope | 8.33% |
What to check
This calculation uses: Vertical rise, Horizontal run per unit rise. It returns: Required horizontal run, Slope.
Measure finished levels rather than unfinished structure. Keep landing lengths, headroom and clear width as separate checks.
A geometrically possible result may not comply with accessibility or stair rules. Check the current local requirements.
Use the units beside each field. The values in the worked example are starting inputs; replace them with your measurements and the specifications of your material.
Compare alternatives
Open a tool, enter your measured dimensions, then save an estimate. Keep another version if you want to compare products or allowances.