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Carpet to super built-up area calculator

Builders often quote on super built-up area, which includes a share of lobbies, lifts and the club. Enter the loading to see how much of the quoted area you can actually use. Everything runs in your browser; nothing you type is saved or sent.

Carpet and super built-up area

Convert between the two using the builder's loading.

₹90 lakh
Carpet area
1,154 sq ft
₹6,000 per sq ft on super built-up · ₹7,800 per sq ft on carpet
Loading of 30% means 346 sq ft of shared space is in the quoted area

Loading is commonly 25–35% in apartments; ask the builder for the exact figure. RERA requires the carpet area to be stated. How the three areas differ.

Common questions

What is loading in a flat?

Loading is the extra area added to the carpet area to cover walls, balconies and a share of common areas. Super built-up area = carpet area × (1 + loading).

What is a normal loading percentage?

Apartments commonly carry 25–35% loading, higher in towers with large common facilities. RERA requires the carpet area to be disclosed, so ask for it.