Square Footage Calculator
Calculate floor area in square feet and square meters for rectangles, circles and triangles, with unit conversion and optional cost-per-area totals. Free and client-side.
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What is Square Footage Calculator?
A Square Footage Calculator computes the floor area of rectangular, circular and triangular spaces from your measurements, converts between feet, meters, yards and inches, and can multiply the area by a cost per square foot to estimate project budgets for flooring, paint or real estate.
Key Benefits
- Order the right amount of material with exact area figures
- Switch between imperial and metric units without manual conversion
- Budget projects instantly with cost-per-area totals
Common Use Cases
- β’Measuring rooms for flooring, carpet or tile orders
- β’Estimating paint coverage for walls and ceilings
- β’Comparing property sizes listed in different units
How to calculate square footage
- Pick the shape and unit: Choose rectangle, circle or triangle, then select the unit you measured in β feet, meters, yards or inches.
- Enter the dimensions: Type width and length for a rectangle, radius for a circle, or base and height for a triangle.
- Add cost if budgeting: Enter your cost per square foot to see the total price, and read the area in both square feet and square meters.
Key Features
- Rectangle, circle and triangle area formulas in one tool
- Feet, meters, yards and inches input with automatic conversion
- Results shown in both square feet and square meters
- Optional cost-per-square-foot total for flooring and paint budgets
- Pure client-side math β instant and offline-capable