RapidCheck

Carpet to Built-up Area Converter

Estimate built-up area from carpet area and a loading factor.

Last updated: 20 Aug 2026

Quick answer

Built-up area = carpet area × (1 + loading% ÷ 100). With a typical 30% loading, a 1,000 sq ft carpet area becomes about 1,300 sq ft built-up. Enter your carpet area and loading above.

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Convert carpet area to built-up area using the loading factor: built-up = carpet × (1 + loading ÷ 100). Loading (common areas, walls) is typically 25–40%.

How to convert carpet area to built-up area

  1. 1 Enter your carpet area (sq ft).
  2. 2 Enter the loading factor your builder applies (often 25–40%).
  3. 3 We show the built-up / super built-up area.

Frequently asked questions

What is carpet area?
The actual usable floor area within the walls of a flat — the space you can lay a carpet on.
What is the loading factor?
The extra percentage added for walls and shared spaces to arrive at built-up/super built-up area, typically 25–40%.
Which area is used for pricing under RERA?
RERA mandates that flats are sold on carpet area, though builders may still quote super built-up.

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