ConverterHub

Wheelchair Ramp Calculator

Find ramp length and slope.

How to use

  1. Enter your values in the fields above.
  2. Press Calculate to see your result instantly.
  3. Use the Share button to copy a link to your result.

About this calculator

This calculator finds the ramp length and angle needed for a given rise (vertical height) and slope ratio, using basic right-triangle trigonometry. The ADA recommends a maximum slope of 1:12 for wheelchair ramps, meaning 1 inch of rise for every 12 inches of ramp length, though gentler slopes are easier to use.

Contractors and homeowners use it to plan a compliant ramp before building, and caregivers use it to check whether an existing or planned ramp will be safe and usable. Enter the rise and your target slope ratio to get the required ramp length and incline angle.

Was this helpful?

Comments (0)

  • Be the first to comment.

Popular calculators

Loan Calculator

Monthly payment, total interest and full amortization schedule.

Percentage Calculator

Percent change, percent of, and ratio calculations.

Discount Calculator

Calculate final price, savings, and discount amount.

BMI Calculator

Body mass index from height and weight (metric or imperial).

Age Calculator

Compute your exact age in years, months and days from a birth date.

Compound Interest Calculator

Calculate the final amount and interest earned with compounding.

All Calculators