Square Footage Calculator
Calculate the area of a rectangle, circle, or triangle in sq ft and sq m.
Square Feet
300 ft²
Square Meters
27.8709 m²
Calculating square footage
Square footage is the standard measure of floor area in the US and Canada; the rest of the world uses square meters. One square foot equals approximately 0.0929 m², and one square meter equals about 10.764 ft². This tool handles three common shapes: rectangles (length × width), circles (π × r²), and triangles (½ × base × height). Enter your dimensions in feet or meters and both values are shown simultaneously. All calculations happen locally in your browser.
Related tools: Percentage Calculator · Aspect Ratio Calculator
Private & free — this tool runs entirely in your browser.
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