Pythagoras theorem calculator
Free Online Pythagoras Theorem Calculator — Solve Right-Angled Triangles Instantly
Easily calculate any side of a right-angled triangle using our Online Pythagoras Theorem Calculator. Enter two known sides and instantly get the missing side — simple, fast, and works directly in your browser without registration.
How to Use the Pythagoras Calculator
- Enter the lengths of two known sides of the triangle.
- Leave the field empty for the side you want to calculate (A, B, or Hypotenuse).
- Click Calculate to get the result instantly.
- Use Reset to clear all fields and start over.
Supported Calculations
- Calculate Hypotenuse — given side A and side B.
- Calculate Side A — given side B and Hypotenuse.
- Calculate Side B — given side A and Hypotenuse.
Why Use This Pythagoras Calculator?
- 📐 Instantly solve for any missing side of a right-angled triangle.
- 💻 100% browser-based — no software or login needed.
- 📱 Fully responsive and mobile-friendly design.
- 🎓 Perfect for students, teachers, engineers, and geometry enthusiasts.
Examples
Example 1: Side A = 3, Side B = 4 → Hypotenuse = 5
Example 2: Side A = 1, Hypotenuse = 2 → Side B ≈ 1.732
Example 3: Side B = 6, Hypotenuse = 10 → Side A ≈ 8
Whether you’re solving homework problems, doing engineering calculations, or exploring geometry concepts, our free Pythagoras Theorem Calculator gives quick and reliable results.
FAQ — Pythagoras Theorem Calculator
1. How do I calculate the hypotenuse?
Enter the lengths of side A and side B, leave the hypotenuse field empty, and click Calculate.
2. How do I calculate a missing side?
Enter the other side and the hypotenuse, leave the missing side empty, and click Calculate.
3. Is this calculator free?
Yes, it’s completely free, online, and requires no registration or installation.
4. Can I use it on mobile?
Yes, it’s fully responsive and works on smartphones, tablets, and desktops.
