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Slope Calculator

Free online slope calculator tool.

What Is a Slope Calculator?

The Slope Calculator calculates the steepness and direction of a line connecting two points. It is the fundamental measure of rise over run in algebra. This free online tool is useful for slope calculator, slope of a line calculator, rise over run calculator. Common use cases include algebra, graphing, coordinate geometry, linear equations, and finding line steepness. It is designed for quick browser-based calculations and is suitable for homework, programming, study, everyday math, and checking results.

How to Use This Slope Calculator

  1. 1
    Enter Point 1Provide its X and Y coordinates.
  2. 2
    Enter Point 2Provide the second point's X and Y coordinates.
  3. 3
    CalculateThe tool divides the change in Y by the change in X.
  4. 4
    Review the SlopeA positive, negative, zero, or undefined slope describes the line's direction.
  5. 5
    Interpret the ResultUse the slope for algebra, graphing, or coordinate geometry.

Frequently Asked Questions

A negative slope indicates that the line goes downwards from left to right. A positive slope goes upwards.
A slope of exactly 0 means the line is completely horizontal and flat.
An infinite or undefined slope means the line is completely vertical. The change in X is zero, and you cannot divide by zero.