South Africa
South Africa Square footage calculator
Give it a length and a width and it returns the floor area, in square metres or square feet, plus the same area in the other unit so you can read it whichever way a quote is written. Set the number of rooms or sections and it totals them, which is how most flooring, turf, paint and tiling jobs are actually measured. People reach for it before buying carpet or laminate, when working out how much lawn seed a garden needs, when an estate listing quotes a size they want to picture, or when a tradesperson prices by the square metre and they want to sanity-check the bill. The maths is a simple rectangle, but having both units and a clean total saves the awkward conversions that cause ordering mistakes.
Multiply the area by your price per unit (flooring, turf, paint coverage) to budget a job. Add about 10 percent for cuts and waste.
How it works
- Enter the length and the width of the space.
- Choose whether you measured in metres or feet.
- If you are covering several rooms or patches the same size, set how many.
- The tool multiplies length by width, totals across the rooms, and shows the area in your chosen unit and converted to the other.
area = length x width x number of rooms
Area is length multiplied by width, which gives the size of one rectangle in square units of whatever you measured in. Multiplying by the number of rooms totals several identical spaces in one step. To switch units the tool uses the exact relationship that one square metre equals about 10.7639 square feet, which follows from one foot being 0.3048 metres exactly and squaring that figure.
- length
- the longer side of the space
- width
- the shorter side of the space
- rooms
- how many equal-sized areas to total
Everyday areas for a sense of scale
| Single garage | about 15 m² | roughly 160 square feet |
| Average UK bedroom | 11 to 14 m² | a double room |
| Tennis court (singles) | 195.6 m² | playing area only |
| One square metre | 10.764 ft² | the metric to imperial factor |
Worked example
A room 5 metres by 4 metres: the area is 20 square metres, which the tool also shows as about 215.28 square feet. Set two identical rooms and the total becomes 40 square metres. To budget flooring at 25 per square metre, multiply 40 by 25 for 1,000, then add roughly 10 percent for offcuts and pattern matching.
Key facts
- One square metre is about 10.764 square feet, not three feet, because area squares the length conversion.
- A square room hides a trap: doubling each side does not double the area, it quadruples it.
- Flooring and tiling are usually priced per square metre, so the area times the unit price is your material budget.
- An acre is 4,046.86 square metres and a hectare is 10,000, useful when a garden or plot is quoted in land units.
Tips
- Measure twice in the room and take the larger figure where a wall is not perfectly straight, so you do not order short.
- Add a waste margin of about 10 percent for cuts before you place a flooring or turf order.
- For paint, work from wall area and the tin coverage rather than the floor, and remember most jobs need two coats.
- Sketch an irregular space and break it into rectangles before measuring, which keeps the sums simple and accurate.
Frequently asked questions
How do I measure an L-shaped or irregular room?+
Split it into rectangles. Measure each rectangle as its own room, add them with the rooms field or by running the tool twice, and sum the results. Most odd shapes break down into two or three rectangles.
Why convert between square metres and square feet?+
Because suppliers and listings mix them. Flooring is often sold per square metre while a property advert or an older plan may quote square feet. One square metre is about 10.764 square feet, so the two are easy to confuse if you only see one figure.
How much extra should I order for waste?+
A common rule is 5 to 10 percent on top of the measured area for straight-laid flooring, and up to 15 percent for diagonal patterns or busy rooms with many cuts. The calculator gives the exact area, so add your waste margin to that.
Does this work for paint coverage?+
Use the wall area, not the floor. Measure each wall as length by height, total them, and subtract large openings if you want to be precise. A litre of emulsion typically covers 10 to 12 square metres per coat, so divide the wall total by that.
Is a square foot the same as a foot?+
No. A foot is a length; a square foot is an area, a square measuring one foot on each side. Squaring is why a small change in a room dimension moves the area more than people expect.
Things to watch
- The result is a plain rectangle area; bay windows, alcoves and sloping ceilings need measuring as separate pieces.
- Material coverage figures from a manufacturer are guides, so always check the pack and round up rather than down.
- Rounding for display means the figure is right for ordering but not a survey-grade measurement.
Last updated: 2026
This is an estimate for general guidance, not financial, tax, legal or medical advice. Figures can change and individual circumstances vary. Always confirm with the official sources listed before making decisions.
Reviewed by Vikas Dulgunde.