Pythagorean theorem calculator
Find the hypotenuse from two perpendicular legs.
Formula
c = √(a² + b²), with all lengths converted to meters
Leg a: 3 m · Leg b: 4 m · Hypotenuse ≈ sqrt((3 m)^2+(4 m)^2)
How to use
- Enter the first leg and its unit.
- Enter the second perpendicular leg.
- Read the hypotenuse in meters.
Examples
- Legs 3 m and 4 m give a 5 m hypotenuse.
- Legs 5 m and 12 m give a 13 m hypotenuse.
Frequently asked questions
Which sides should I enter?
The two sides that meet at the right angle.
Does this work for any triangle?
No. The angle between the two entered legs must be 90°.
Can the legs use different units?
Yes. Each is converted to meters before calculation.
Sources
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