Slope Calculator

Find the slope of the line through two points, with its angle and equation. Enter the coordinates.

Slope (m)
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Rise over run.

Usage Tip

Positive slope rises left to right, negative falls. A slope of 1 is a perfect 45-degree diagonal.

THE MATH
slope = (y2 − y1) ÷ (x2 − x1)
The rise over the run
Slope measures steepness: how much a line rises for each step across.
A vertical line has undefined slope; a horizontal line has slope zero.
Slope is rise over run between the two points.
The angle is measured from the horizontal.
Two points with the same x-value give a vertical line (undefined slope).
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