Slope Percentage Calculator

Calculate slope percentage (slope × 100). Enter rise/run or an angle in degrees.

Units don't matter (m, ft) — slope % is unitless.
If run = 0 the result is infinite — the calculator will warn.
deg
Providing an angle overrides the rise/run calculation.
Keyboard: Press Enter to calculate
Slope percentage
Also shows rise/run ↔ angle conversions
Formula: Slope % = (rise / run) × 100. If using an angle θ: Slope % = tan(θ) × 100.