SlopeCalc
Calculator

Percent = rise ÷ horizontal run × 100

Slope percentage calculator

Enter rise and horizontal run in any supported length units; exact unit factors are applied before division.

Private browser calculation

Choose the known representation

Stays on this page

Calculation mode

Known values and units

Rise may be signed; horizontal run must be positive.

SlopeCalc handles ideal geometric slope only. It does not determine permissible grades, building-code compliance, accessibility, drainage, traction, structural design, or measurement uncertainty.