FREE · CALCULATORS & CONVERTERS
Slope and Grade Calculator.
Convert rise and run into grade percent, angle and a 1-to-n ratio.
Grade is rise divided by run. A negative rise is a fall. Local arithmetic only. This is a quantity or geometry estimate, not a code check and not a substitute for a licensed professional.
- Rise
- 1 m
- Run
- 4 m
- Grade
- 25 %
- Angle
- 14.036243 degrees
- Ratio 1 to
- 4
Grade percent is rise divided by run, times 100. The angle is the arctangent of that ratio. A negative rise is a fall.
How to use Slope and Grade Calculator
Enter a rise and a run, or a percent or angle with a run. The other expressions are calculated.
How it works
Convert rise and run into grade percent, angle and a 1-to-n ratio. Grade is rise divided by run. A negative rise is a fall. Local arithmetic only. This is a quantity or geometry estimate, not a code check and not a substitute for a licensed professional.
Example
A 1 m rise over a 4 m run is a 25% grade.
Questions about Slope and Grade Calculator
Is Slope and Grade Calculator free, and do I need an account?
Yes. This tool is free to use in your browser without an account. Processing takes place on your device.
What are the limits and what should I check?
Grade is rise divided by run. A negative rise is a fall. Local arithmetic only. This is a quantity or geometry estimate, not a code check and not a substitute for a licensed professional. Review the result before using it in your work.
Is my input sent to a server?
Your input is processed in your browser and is not uploaded by this tool. Files and pasted text are cleared when the page is refreshed. Normal website requests are still required to load the page and its libraries. Read the privacy explanation.