Free Online Area Calculator – Eqsy.io

Easily calculate the area of common geometric shapes online. Choose a shape, enter the dimensions, and get instant results with metric or imperial units. Perfect for students, teachers, DIY projects, and quick everyday checks.

Area Calculator

Choose a shape: Units:

Share this result:

Subscribe for updates

How to Use the Area Calculator

Choose a shape – Select from circle, square, rectangle, triangle, ellipse, trapezoid, parallelogram, or regular polygon.
Enter the dimensions – Type in side length, base, height, radius, or other required values (clearly marked as a, b, h, r, etc.).
Select units – Choose between metric (cm, m) or imperial (inches, feet).
Click Calculate – Instantly see the area with the correct units.

Which shapes can I calculate the area for?tool?

You can calculate the area of circles, squares, rectangles, triangles, ellipses, trapezoids, parallelograms, and regular polygons.

Can I switch between metric and imperial units?

Yes. The calculator allows you to choose between metric units (cm, m) and imperial units (inches, feet).

How accurate are the results?

The calculator uses standard mathematical formulas, so results are as accurate as the numbers you enter.

Do I need to know the formulas?

No. Just enter the required dimensions, and the tool will do the calculations for you.

Can I use this tool on mobile devices?

Yes. The Area Calculator works on smartphones, tablets, and desktop computers.

What can I use this calculator for?

It’s great for school assignments, construction projects, DIY tasks, design work, or anytime you need a quick and reliable area calculation.

🔹 About

An area calculator is a simple tool that lets you quickly find the surface area of different shapes such as circles, rectangles, triangles, ellipses, trapezoids, and more. Instead of memorizing formulas, you just enter the dimensions, and the calculator does the math for you.