Square Meter Calculator
Area in square metres from metres or centimetres, with square feet alongside.
Works in your browser. Nothing you type is sent to us.
What you are measuring
Type 12' 6" or 12.5 for twelve and a half feet; 6 1/2" works too. For an L-shaped room, add it as two rectangles. Tick Take away for an island, a fireplace or a stairwell.
Material, optional
Flooring: add 5–10% for cuts, 15% or more for a diagonal or herringbone layout.
Each area
| Area | Working | sq ft |
|---|
Worked out in your browser as you type. Nothing you type is sent to us.
Square Meter Calculator at a glance
- Price
- Free
- Data sent to us
- None, it runs in your browser
- Sign-up
- Not needed
- Shapes
- Rectangle, triangle, circle, trapezoid
- Units
- Feet and inches, or metres
- Gives
- Sq ft, sq yd, m², acres, boxes, cost
How to use Square Meter Calculator
- Measure the spaceMeasure the length and width of each part of the room. Split an L-shaped room into two rectangles.
- Type each areaType the measurements as you read them, such as 12' 6". Press Add another area for each extra part, and tick Take away for an island or an opening.
- Read the totalThe total shows in square feet, square yards, square metres and acres. Add a waste allowance, a price or the coverage of one box to see what to buy.
Type each length in metres, or add cm or mm, choose the shape and add as many areas as you need. The total shows in square metres with square feet, square yards and hectares alongside, so a floor plan in metres can be compared with a price per square foot.
How it works
Square Meter Calculator is a web page that does its work on your own device. Everything you type or choose is worked out by your browser and never sent to a server, so nothing is stored and there is nothing to delete. There is no account, no sign-up and no limit on how often you use it.
Square metres to square feet
One square metre is 10.764 square feet, so a 20 m² room is about 215 square feet. One hectare is 10,000 square metres.
Other shortcuts
Square Footage Calculator · Flooring Calculator
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