What is the Slope Calculator?
Find the slope, y-intercept and equation of the line through two points. From percentages and fractions to logarithms and quadratic equations, these math calculators show exact results — using arbitrary-precision integers wherever whole-number answers can get very large.
How to use the Slope Calculator
- Enter your x₁, your y₁, your x₂, your y₂.
- Results update automatically as you type; you can also press Calculate.
- Read the output: slope m, equation, angle.
- Use the 📊 chart to see the result visually, then copy or share it.
Formula and method
Worked example
With x₁ = 1, y₁ = 3, x₂ = 5, y₂ = 11, the Slope Calculator returns slope m: 2; equation: y = 2x + 1; angle: 63.4349°.
Tips for better results
- Use the formula section on each page to check your homework method, not just the answer.
- For very large factorials, combinations and base conversions we use exact big-integer math.
- Floating-point results are rounded to 12 significant digits to remove binary noise.
Frequently asked questions
What does the Slope Calculator do?
Find the slope, y-intercept and equation of the line through two points.
How is it calculated?
The Slope Calculator uses this method: m = (y₂ − y₁) ÷ (x₂ − x₁); b = y₁ − m·x₁.
Can you show an example?
With x₁ = 1, y₁ = 3, x₂ = 5, y₂ = 11, the Slope Calculator returns slope m: 2; equation: y = 2x + 1; angle: 63.4349°.
Is the Slope Calculator accurate?
Yes. It uses standard formulas and exact constants, and the results are verified by our automated test suite. Values are displayed to up to 12 significant digits.
Is this tool free and private?
Yes — the Slope Calculator is completely free with no sign-up, and it runs entirely in your browser, so the values you enter are never uploaded to our servers.
Related tools
📬 Get new tools first — free
Join Taurang to hear about new calculators, converters and features. No spam; unsubscribe anytime.