Slope Grade Converter
Enter a slope and instantly convert it to percent grade, degrees, and 1 in X ratio formats.
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How to use
- Enter your value in the boxes above or select an option.
- The result updates live at once — no button press needed.
- Change the value or unit and the new result shows on its own.
Note
Percent grade = rise/run x 100. A 100% grade means 45 degrees, not 200%. The common standard for a wheelchair ramp is 1:12 (8.33%).
Frequently Asked Questions (FAQ)
What can I convert with the slope grade converter?
A slope value to percent grade, degrees and 1-in-X ratio formats, or you can enter a percent grade or an angle directly. Results update live as you type with no button press.
How do I enter a slope?
Enter the rise and run, or skip straight to a percent grade or an angle in degrees. The converter fills in the other formats instantly.
Is a 100% grade the same as a 90-degree slope?
No. A 100% grade means the rise equals the run, which is 45 degrees. Percent grade is rise divided by run times 100, not a fraction of 90 degrees.
What is the standard wheelchair ramp grade?
The common accessibility standard is 1:12, which equals an 8.33% grade.