FREE ONLINE CALCULATOR / GEOMETRY
Rectangle Calculator
Find area, perimeter and diagonal of a rectangle. Fast, private, and built to make every number easier.
Input values
✦ InteractiveHow does this calculator work?
Find area, perimeter and diagonal of a rectangle. Edit the inputs and see the computed results. All calculations take place inside your browser, without submitting values to a server.
A = lw; P = 2(l+w)
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