Step-by-step instructions
- Enter or select Leg a.
- Enter or select Leg b.
- Tap Calculate.
- Review the result shown directly below the calculator.
Pythagorean Theorem Calculator
Calculate the hypotenuse from the two legs of a right triangle.
How to use the Pythagorean Theorem Calculator
Calculate the hypotenuse from the two legs of a right triangle.
What the inputs mean
- Leg a
- Enter the value requested by this field label.
- Leg b
- Enter the value requested by this field label.
Formula or calculation method
The Pythagorean theorem is used: a² + b² = c².
Example
For example, sides of 3 and 4 produce a hypotenuse of 5.
How to understand the result
Use the result as an estimate based on the values you entered. For planning decisions, double-check that the input units and assumptions match your real situation.
Tip: Keep all values in compatible units and use values from the same time period when the calculator compares two amounts.