# Wheelchair Ramp Calculator

Wheelchair Ramp Calculator

Height Above Ground Level:
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### Wheelchair Ramp Formula:

Length = 12 * Height

Angle Length = SQRT( (Height ^ 2) + (Length ^ 2) )

### Wheelchair Ramp Definition

The free online Wheelchair Ramp Calculator helps do-it-yourselfers design, plan and construct a safe ramp. Wheelchair ramps have specific specifications intended to allow for the safest transition from level to level.

Ramp Benefits

The Americans with Disabilities Act (ADA) and many building codes require ramp accessibility in most public buildings. In addition, ramps become a necessity in private homes where family or friends have mobility problems. While the ramps are often referred to as wheelchair ramps, it often provides easier access to people who use canes or walkers.

Using the Calculator

Input the height of the bottom of the door above ground or sidewalk. The Wheelchair Ramp Calculator determines the ramp length, defined as the level horizontal distance from the wall of the building to end of the ramp, and the slope length, defined as the distance from the bottom of the door to the end of the ramp.

The calculator bases the results on a slope of 1 vertical inch for each 12 horizontal inches. This is often stated as a 1 in 12 slope and is considered a standard in accessibility ramps.

With this information, the builder can determine the amount of materials needed and design the ramp. Wheelchair ramps are commonly built of wood, cement or metal. Material selection is often based on user preference. However, the safe slope of the ramp is consistent no matter what materials are used.

Other Considerations

The calculated ramp length does not include any landings or level surfaces outside the door. For example, if a 4 foot level landing is planned for just outside the door the ramp would begin at the edge of the landing rather than at the door. In this case, the landing and ramp would extend 4 feet further from the door than the Wheelchair Ramp Calculator indicates.

### How to Calculate Wheelchair Ramp

Let's be honest - sometimes the best wheelchair ramp calculator is the one that is easy to use and doesn't require us to even know what the wheelchair ramp formula is in the first place! But if you want to know the exact formula for calculating wheelchair ramp then please check out the "Formula" box above.