This wheelchair ramp reference table shows the ramp surface length for a range of rise (height to climb) values, assuming a slope ratio (1 in x) of 12. Every figure is computed with the same engine that powers our Wheelchair Ramp Calculator, so the numbers are exact.
| Rise (height to climb) | Ramp surface length | Horizontal run needed |
|---|---|---|
| 6 in | 72.25 | 72.00 |
| 12 in | 144.50 | 144.00 |
| 18 in | 216.75 | 216.00 |
| 24 in | 289.00 | 288.00 |
| 36 in | 433.50 | 432.00 |
| 48 in | 578.00 | 576.00 |
| 72 in | 866.99 | 864.00 |
| 120 in | 1,444.99 | 1,440.00 |
| 170 in | 2,047.07 | 2,040.00 |
| 240 in | 2,889.98 | 2,880.00 |
How to use this table
Find the row closest to your rise (height to climb) and read across to the ramp surface length. For a value between two rows, the real figure sits between them — or enter your exact numbers in the Wheelchair Ramp Calculator for a precise answer.
Need a value that is not in the table? — the Wheelchair Ramp Calculator does it instantly, for free, with the formula and a worked example built in.
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