Slope Calculator
Calculate the slope, angle, and distance between two points.
Recommended Books on Mathematics & Number Theory
Precalculus Mathematics in a Nutshell
George F. Simmons
Calculus Made Easy
Silvanus P. Thompson
The Joy of x
Steven Strogatz
As an Amazon Associate we earn from qualifying purchases.
How do you like this tool?
How to Use
Enter Point 1
Type the X₁ and Y₁ coordinates of the first point.
Enter Point 2
Type the X₂ and Y₂ coordinates of the second point.
View Results
The slope, angle in degrees, and distance between points are displayed instantly.
Use Cases
Linear Equations
"Find the slope to write the equation of a line in slope-intercept form (y = mx + b)."
Road Grade
"Calculate the grade/gradient of a road or ramp."
Physics Problems
"Determine the rate of change for velocity-time or distance-time graphs."
Professional Products to Boost Your Math Skills
TI-84 Plus CE Color Graphing Calculator, Black
Texas
fx-CG50-N Color Graph Scientific Calculator
Casio
Prime G2 Graphing Calculator – Multi-Touch 3.5" Color Display CAS Exam Approved SAT/AP/IB Scientific Calculator for Scho
HP
As an Amazon Associate we earn from qualifying purchases.
Frequently Asked Questions
?What is slope?
Slope (m) measures the steepness of a line. It's calculated as the change in y divided by the change in x: m = (y₂ − y₁) / (x₂ − x₁).
?What does a slope of 0 mean?
A slope of 0 means the line is perfectly horizontal — there is no vertical change.
?What is an undefined slope?
When x₁ = x₂, the line is vertical and the slope is undefined (division by zero).
?What does a negative slope mean?
A negative slope means the line goes downward from left to right.
?How is the angle calculated?
The angle is the arctangent of the slope: θ = atan(m), converted from radians to degrees.
?Is my data private?
Yes. Everything runs locally in your browser. No data is sent to any server.
?Is this tool free?
Yes. Completely free with no limits, no sign-up required.