Find ramp length for a chosen slope and rise.
The rise multiplied by the slope ratio gives the length, and the slope percentage is simply the ratio inverted into percent. An accessible ramp must trade rise for run, and a wrong slope can put a wheelchair or mower beyond practical use.
Ramp Slope
Length = rise x slope ratio; slope = 100 / ratio
Length = rise x slope ratio; slope = 100 / ratio The rise multiplied by the slope ratio gives the length, and the slope percentage is simply the ratio inverted into percent.
An accessible ramp must trade rise for run, and a wrong slope can put a wheelchair or mower beyond practical use.
This calculator takes 2 inputs: Rise, Slope. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.