Calculate slope, grade percentage, rise, run, slope angle, incline ratio, elevation change, and terrain steepness. Use this slope calculator for hiking trails, land grading, drainage, ramps, gardens, driveways, property planning, landscape projects, and outdoor route estimates.
Slope from rise and run:
The calculator divides rise by run to calculate slope ratio, grade percentage, and angle.
Slope from elevation and distance:
Enter starting elevation, ending elevation, and distance to estimate route grade and steepness.
Slope from angle:
Enter an angle in degrees to calculate grade percentage and rise over a target run.
Rise from grade:
Enter a grade percentage and target run to calculate the rise or elevation change.
A slope calculator helps convert between rise, run, grade percentage, slope angle, and steepness so you can better understand terrain or project layout.
It can be useful for hiking trails, land grading, drainage, driveways, ramps, gardens, landscaping, fields, property planning, and outdoor route comparisons.
Your result shows grade percentage, slope angle, rise, run, slope ratio, elevation change, steepness category, adjusted travel time, and practical notes for land, trails, ramps, drainage, or outdoor planning.
Divide rise by run. To get grade percentage, multiply the result by 100.
A 10% slope means the land rises 10 units vertically for every 100 units horizontally.
Take the arctangent of the slope ratio. For example, a 10% grade has a slope ratio of 0.10 and an angle of about 5.71 degrees.
Slope is the rise divided by run. Grade is often the same slope expressed as a percentage.