Square Feet Calculator CA
Work out the area of a rectangle, circle or triangle in square feet, square metres and square yards.
How it works
Choose a shape, switch between metric and imperial units, and enter the dimensions. The calculator returns the area in square feet, square metres and square yards.
Frequently asked questions
How do I calculate square footage?
Multiply the length by the width in the same unit. A 12 ft by 10 ft room is 120 square feet.
How do I convert square feet to square metres?
Multiply square feet by 0.0929. To go the other way, multiply square metres by 10.764.
How many square feet are in a square metre?
About 10.764 square feet make up one square metre.
How do I work out square metres for tiles?
Measure the floor length and width in metres and multiply them, then divide by the area each tile covers to find the number of tiles needed, plus wastage.
How do I measure an irregular room?
Divide it into rectangles, calculate each rectangle’s area, and add them together. Use π × radius² for any circular sections.
How many square feet are in an acre?
One acre is 43,560 square feet.
Square Feet Calculator
Square footage is simply the area of a space: for a rectangle it is length × width. This calculator finds the area and converts between square feet, square metres and square yards — useful for flooring, tiling, paint, carpet and property listings.
How to calculate square footage
Measure the length and width in the same unit and multiply them. A room 12 ft long and 10 ft wide is 12 × 10 = 120 square feet. In metric, 4 m × 3 m = 12 square metres.
Unit conversions
| From | To | Multiply by |
|---|---|---|
| Square metres | Square feet | 10.764 |
| Square feet | Square metres | 0.0929 |
| Square yards | Square feet | 9 |
| Acres | Square feet | 43,560 |
Irregular or L-shaped areas
Split the space into rectangles, work out each area, then add them together. For a circular area use π × radius².
Working out square metres for tiles or flooring
Measure the floor in metres and multiply length × width to get square metres, then divide by the area each tile or pack covers to find how many you need (adding wastage).
Results are estimates for general guidance in Canada and may not reflect the latest local rates, fees or rules. Check official sources before making decisions.