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Pythagorean Theorem Calculator with steps

Find the missing side of a right triangle. Type your problem: see the answer, then every step with the reason. Free, no sign-up.

Solved examples

Each one solved step by step, with the reason for every step.

Right triangle leg 5 hypotenuse 13 b = 12
Right triangle legs 2 cm and 3 cm c ≈ 3.6 cm
Right triangle hypotenuse 10 m, leg 8 m b = 6 m
Right triangle legs 3, 4 c = 5
Right triangle legs 6, 8 c = 10
Right triangle legs 8 cm and 15 cm c = 17 cm
Right triangle legs 9, 12 c = 15
Right triangle legs 1, 1 c ≈ 1.4
Right triangle leg 12 hypotenuse 20 b = 16
Right triangle legs 4, 7 c ≈ 8.1
Right triangle leg 7 hypotenuse 25 b = 24

Learn how to do it yourself

Pythagoras · Geometry · 22 problems, printable worksheet