Pythagorean Theorem Calculator
Enter any two sides of a right triangle and leave one blank to solve it. Uses a² + b² = c².
| Metric | Value |
|---|
Uses a² + b² = c². Side lengths must be non-negative.
Privacy: calculations run locally in your browser. No values are stored or transmitted.
How it works
If c is missing: c = √(a² + b²)
If a is missing: a = √(c² − b²)
If b is missing: b = √(c² − a²)
Examples
- a=3, b=4 → c=5
- a=5, c=13 → b=12
- b=8, c=17 → a=15
When to use this tool
This tool is designed for quick, practical tasks such as everyday calculations, data formatting, or simple conversions. It is best used when you need fast results without installing software or using complex tools.
When to use
- Quick checks or one-time calculations
- Validating or converting data before using it elsewhere
- Simple tasks that do not require advanced software
When not to use
- Critical financial, legal, or medical decisions
- Large-scale or automated processing
- Situations requiring guaranteed precision beyond basic validation
Always review results before using them in important contexts.
About this tool
This tool helps you perform quick utility operations directly in your browser. It runs entirely in your browser without sending data to a server.
You can use this tool when handling simple tasks without installing additional software. The results should be interpreted as a processed output based on your input data.
FAQ
- What is the Pythagorean theorem?
For a right triangle, a² + b² = c², where c is the hypotenuse.
- Which value should be the hypotenuse?
The hypotenuse is the longest side and is opposite the right angle. In this calculator, c is always the hypotenuse.
- Can I leave one side blank?
Yes. Leave exactly one of a, b, or c blank and the calculator will solve for it.
- What if c is smaller than a or b?
That would be invalid for a right triangle. The calculator checks for impossible values.
- Are my inputs stored?
No. Calculations run locally in your browser and are not stored or transmitted.