What does the Pythagorean Theorem Calculator work out?

Solve a right triangle's missing side. It is one of the Math tools on Mondo Knows.

How is the Pythagorean Theorem Calculator calculated?

The maths is short enough to check by hand: a^2 + b^2 = c^2.

Do I need to sign up, and is my data stored?

No sign-up, and nothing you type is sent anywhere. The calculation runs in your own browser, so the figures stay on your device and the page works offline once loaded.

Mondo Knows Tools

Pythagorean Theorem Calculator

Solve a right triangle's missing side. Use the free pythagorean theorem calculator below to get an instant answer, with the formula shown so you can check the maths and trust the result. Free, private, and no sign-up.

Side a

Side b

Mondo says

Hypotenuse c

5

Area6

Perimeter12

Angles36.87 and 53.13 deg

The formula

a^2 + b^2 = c^2

Pythagorean Theorem Calculator: common questions

What does the Pythagorean Theorem Calculator work out?: Solve a right triangle's missing side. It is one of the Math tools on Mondo Knows.
How is the Pythagorean Theorem Calculator calculated?: The maths is short enough to check by hand: a^2 + b^2 = c^2.
Do I need to sign up, and is my data stored?: No sign-up, and nothing you type is sent anywhere. The calculation runs in your own browser, so the figures stay on your device and the page works offline once loaded.

Mondo also knows

Right Triangle CalculatorEvery side and angle of a right triangle.➗ Math Triangle CalculatorArea and perimeter from three sides.➗ Math Distance CalculatorStraight-line distance between two points.➗ Math Quadratic Formula CalculatorRoots of ax^2 + bx + c = 0, including complex ones.➗ Math

Estimates for general guidance only. This is not financial, medical or legal advice. Everything runs in your browser and nothing you type is stored.