Math Calculators, Lessons and Formulas

It is time to solve your math problem

mathportal.org

Rectangle calculator

An online calculator that calculates the side, area, perimeter and diagonal of a rectangle if you enter two known values. Step-by-step explanations for each combination of input parameters are provided.

Rectangle Calculator
0 1 2 3 4 5 6 7 8 9 / . del
Enter known values:
side a =
side b =
area A =
perimeter P =
diagonal d =

rectangle
Select value to find:
side a
side b
area A
perimeter P
diagonal d
Show me an explanation

Quick Calculator Search

Was this calculator helpful?

Yes No
107 422 397 solved problems