Ramp Calculator

Find the ramp length for a step or threshold at a chosen slope.

How the Math Works

The Ramp Calculator uses the formula run = rise × slope ratio to determine the horizontal distance needed for a ramp. Here, 'rise' is the vertical height to be overcome, and the 'slope ratio' represents the horizontal distance (run) required for each unit of vertical rise. For example, a slope ratio of 12 means that for every 1 unit of vertical rise, the ramp must extend 12 units horizontally. By multiplying the total rise by this ratio, the calculator computes the necessary ramp length to maintain a safe and compliant incline.

Practical Applications

To apply this calculation, first measure the vertical rise (height difference) between the ramp's start and end points. Next, select an appropriate slope ratio based on safety standards or project requirements—common ratios like 1:12 ensure accessibility for wheelchairs. Input these values into the calculator, and it will output the required horizontal run. This is critical in construction projects, such as building accessible entrances, loading docks, or garden pathways, where precise measurements prevent hazards and meet regulatory guidelines.

Day-to-Day Use

This calculation is invaluable for everyday tasks like improving home accessibility, planning DIY ramp installations, or designing safe outdoor spaces. For instance, homeowners can ensure their driveway ramps or wheelchair-accessible patios avoid steep inclines that could cause accidents. It also aids in organizing moving furniture or equipment, where a gentler slope reduces effort. By simplifying complex engineering principles, the calculator empowers individuals to make informed decisions about ramps in daily life, enhancing safety and usability for all users.

Worked example

24 in rise at 1:12 → 24 ft run.

FAQ