Perimeter and area calculator

Free Square Area & Perimeter Calculator - calculate area & perimeter of a square step by step

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Rectangle Calculator

P = perimeter A = area √ = square root Calculator Use Use this calculator if you know 2 values for the rectangle, including 1 side length, along with area, perimeter or diagonals and you can

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What our customers say

But there's no any kinda ADS. Better than any school, even 6k per year schools that I go to. Really good app, saved me from numerous unwritten homeworks, really easy to use. Very well made, but the focus on the camera is buggy. This app has helped in countless tests/homeworks.

Christopher Huntsberry

I think it's amazing, but don't use it to do your entire homework. Well so far I'm quite impressed with it's accuracy. It is really helpful to students that are not that good at math and math app helps me with my homework. Good job This app Inc. Best app ever, yeah I understand that it doesn't do like 10-20% of the math you put in but the 80-90% it does do it gives the correct answer.

Joseph Richter

The procedure of the problem is also shown step by step. This app is the best math app ever. Great it takes a little while to get used to but once you do it is soooooo easy to use really helped me in my school and you can ask it your questions.

Michael Sosa

Perimeter Calculator. Find the Perimeter of 12 Popular Shapes!

Input the radius in the calculator, and you'll know the circle's circumference. The result should be 43.982 cm. To double-check your result, enter the radius in the circle

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Calculating Area and Perimeter

A sector of a circle is essentially a proportion of the circle that is enclosed by two radii and an arc. Given a radius and an angle, the area of a sector can be calculated by multiplying the area of the entire circle by a ratio of the known

Perimeter Calculator

Solution: Step 1: Write down the length and width of the rectangle. a = 20 cm, b = 8 cm. Step 2: Write down the formula of area of rectangle. Area of a rectangle = a × b. Step 3: Substitute the

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Regular Polygon Calculator

An easy to use, free perimeter calculator you can use to calculate the perimeter of shapes like square, rectangle, triangle, circle, parallelogram, trapezoid, ellipse, octagon, and sector of a circle. Formulas, explanations, and graphs for each