Calculate the perimeter of a triangle using P = a + b + c. Enter the lengths of all three sides.
Calculate the perimeter of a triangle using P = a + b + c. Enter the lengths of all three sides.
The length of the first side.
The length of the second side.
The length of the third side.
The perimeter of a triangle equals the sum of all three side lengths.
How this calculator works
The perimeter of a triangle equals the sum of all three side lengths.
Common questions about this calculator
