Carpet area calculator
Put in whichever area you have been quoted and see the other two, the loading factor, and what you are really paying per usable square foot.
That figure is
Usable floor you actually get
714 sq ft
- Carpet
- 714 sq ft
- Built-up
- 800 sq ft
- Super built-up
- 1,000 sq ft
- Loading on carpet
- 40.0%
- Rate per carpet sq ft
- ₹25,900
- Rate per super sq ft
- ₹18,500
Compare two projects on the rate per carpet square foot. A lower headline rate with heavy loading often works out dearer than one that looks expensive in the advertisement.
The only number worth comparing
Two projects quoting the same rate per square foot can deliver very different flats, because the square foot being quoted is not the same square foot. Divide the total price by the carpet area instead and the comparison becomes honest.
RERA requires the agreement to state carpet area, so the figure you sign for is the reliable one — the brochure is not. The full explanation of the three measurements covers what to check before advising a client.
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Common questions
- How do I convert super built-up area to carpet area?
- Divide out the two loadings in turn — first the share of common areas, then the walls and balcony. At 25 per cent common and 12 per cent walls, a 1,000 sq ft super built-up flat works out at roughly 714 sq ft carpet.
- What is a loading factor?
- How much has been added on top of carpet area to arrive at the quoted figure. Twenty-five to thirty-five per cent is the usual range in Mumbai; anything higher should be matched by genuinely better common amenities.
- Is carpet area the same as usable area?
- Broadly yes. Under RERA carpet area is the net usable floor within the walls, excluding the external walls and the balcony, but including internal partition walls.
- Why compare on the rate per carpet square foot?
- Because it is the only figure that means the same thing across two projects. A lower headline rate with heavy loading frequently works out dearer than a higher rate with little loading.