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Carpet / Built-up Area Calculator

Convert between carpet, built-up and super built-up area.

Enter details

How to use

  1. Fill in: Super built-up area, Area unit, Loading factor (%) and Carpet as % of built-up (editable). Fields with defaults or marked optional can stay as shown.
  2. Tap Convert Areas.
  3. Read the result - you can print or save it as PDF.

Worked example

With Super built-up area = 1000, Area unit = Sq Feet, Loading factor = 25, Carpet as % of built-up = 85:

CARPET AREA (APPROX.)680 sq ft
  • Super built-up area: 1,000 sq ft
  • Built-up area (after 25% loading): 800 sq ft
  • Carpet area (85% of built-up): 680 sq ft
Common industry convention: built-up = super built-up ÷ (1 + loading), carpet ≈ 70-90% of built-up. RERA carpet area definitions differ - check your agreement.