Can I convert square feet to square meters automatically?

Yes! Switching the unit selector recalculates or displays equivalent area across m², ft², cm², in², and acres.

Math & Statistics100% Client-Side · Instant Math

Area Calculator

Compute area and perimeter for rectangles, triangles, circles, trapezoids, and ellipses.

Shape

Length

Width

Result Summary

Total Area

60 m²

Perimeter / Circumference

32 m

Equivalent Area Conversions

m²

cm²

600,000

ft²

645.835

in²

93,000.186

acres

0.01483

How to Use This Calculator

Multi-shape 2D geometry area calculator supporting Rectangle, Triangle (Base/Height or 3-side Heron’s formula), Circle, Trapezoid, Sector, and Ellipse with unit conversion.

1Pick a geometric shape tab: Rectangle, Triangle, Circle, Trapezoid, Sector, or Ellipse.
2Enter dimensions in meters, centimeters, feet, or inches.
3Read the exact area, perimeter/circumference, formula breakdown, and converted metric/imperial areas.

Standard Formula & Methodology

Circle: πr² | Triangle: ½bh or √[s(s-a)(s-b)(s-c)] | Trapezoid: ½(a+b)h

Helpful Context & Precision Notes

Pairs cleanly with Square Footage Calculator when measuring multi-room floor plans.

All inputs stay locally inside your browser tab — nothing is uploaded or logged.

Frequently Asked Questions

When you know side lengths a, b, c instead of height, the semi-perimeter s = (a+b+c)/2 determines exact area via √(s(s-a)(s-b)(s-c)), provided valid triangle inequality holds.