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Pythagorean Theorem

Free online pythagorean theorem. Solve a² + b² = c² with all variations. Accurate and easy to use.

Side a

Side b

Hypotenuse c

Solution

3² + 4² = 5²

c = 5.0000

Step-by-step

1. c² = a² + b²

2. c² = 3² + 4²

3. c² = 9 + 16

4. c² = 25

5. c = √25

6. c = 5.0000

Area

6.0000

Perimeter

12.0000

Triangle inequality: ✓ Valid triangle

Right triangle: ✓ Yes

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Frequently Asked Questions about Pythagorean Theorem

What Is Pythagorean Theorem?

Free online pythagorean theorem. Solve a² + b² = c² with all variations. Accurate and easy to use. Whether you need a quick calculation, text transformation, or data conversion, this free online math calculators tool delivers instant results entirely in your browser — no server uploads, no sign-ups, and no data leaves your device.

How to Use the Free Pythagorean Theorem Online

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Pythagorean Theorem — Quick Reference

Feature	Details
Category	math calculators
Processing	100% client-side (browser)
Privacy	No data leaves your device
Cost	Free — no sign-up required
Works Offline	Yes (after first load)