Slope Calculator
Find slope, angle, and the equation of a line through two points.
The line between two points
Two points fully define a straight line, and its slope tells you how steeply it rises or falls. This tool computes the slope as rise over run and builds the line’s equation from it.
The points (1, 2) and (4, 8) give a slope of 2, an intercept of 0, and the equation y = 2x. It also reports the angle the line makes with the horizontal, useful in geometry and physics.
Complete and private
It computes slope, intercept, and angle in your browser, so nothing you enter is uploaded.
Frequently Asked Questions
What is slope?
The steepness of a line: the change in y divided by the change in x between two points, often called rise over run.
What else does it show?
The y-intercept, the full slope-intercept equation, and the angle of the line in degrees.
What if the line is vertical?
If both points share an x value, the slope is undefined, and the tool says so rather than dividing by zero.
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