Rise Over Run to Percent Calculator
Convert a rise and run to a percent slope (grade).
Change the values and press Calculate to work out your own figures.
Enter the rise and the run.
Show the working
- slope = rise ÷ run; angle = arctan(slope); grade = slope × 100%
How to use it
Enter the rise and the run.
Enter coordinates as whole numbers, decimals or fractions (3/4). Show the working gives the formula with your numbers.
Key facts
grade = rise ÷ run × 100%
Road signs
A 6% grade rises 6 m for every 100 m travelled horizontally, about 3.43°.
Questions
3 over 12 as a percent?
25%.
Is 100% vertical?
No, 100% is 45°.
Formulas
grade = rise ÷ run × 100%
Sources
Limitations
- Vectors have two or three components (leave z blank for 2-D).
- Earth distances assume the WGS 84 ellipsoid (sea level).