Carpet Area Calculator
19 July 2025|3 Minutes Read
By : Admin

Carpet Area Calculator – Easily Calculate Your Carpet Area in Seconds

Carpet Area Calculator helps you quickly estimate the carpet area or built-up area of a property using a standard efficiency ratio. Whether you’re buying a new home, investing in real estate, or planning renovations, knowing your actual carpet area is essential.

Carpet Area = Built-up Area × 0.7
Built-up Area = Carpet Area ÷ 0.7
Use a carpet area calculator to easily estimate how much usable space you’ll get in a property. Ideal for homebuyers, real estate agents, and investors.

What Is Carpet Area?

Carpet area is the net usable floor space within the walls of a house. It excludes the thickness of walls, balconies, and common areas. It is the area where you can actually place carpets—hence the name. Many RERA-approved builders now disclose carpet area upfront—learn more about RERA carpet area definitions and how to calculate them

What Is Built-up Area?

Built-up area includes the carpet area + thickness of inner walls + utility & balcony area. Typically, built-up area is 20% to 30% more than the carpet area.

Carpet Area Calculator

Use this calculator to find either carpet area or built-up area based on your available input.

Enter the total built up area (ft^2) into the Carpet Area Calculator. The calculator will evaluate the Carpet Area. 

Carpet Area Calculator

Enter any 1 value to calculate the other





How to Calculate Carpet Area from Built-up Area?

Carpet Area = Built-up Area × Efficiency Factor (e.g., 0.7)

If the builder states a built-up area of 1200 sq ft and the efficiency is 70%,
Carpet Area = 1200 × 0.7 = 840 sq ft

To better understand the difference between carpet area and built-up area—and how this impacts your property valuation—check out our detailed guide on FSI meaning & calculation

How to Calculate Built-up Area from Carpet Area?

Built-up Area = Carpet Area ÷ Efficiency Factor

If your carpet area is 875 sq ft, and the efficiency is 70%,
Built-up Area = 875 ÷ 0.7 = 1250 sq ft

Why Carpet Area Matters in Real Estate?

  • Accurate pricing: You only pay for usable space.
  • Better comparisons: Carpet area lets you fairly compare two properties.
  • Regulatory transparency: Many RERA-approved builders now disclose carpet area upfront.

Carpet area insights are essential for comparing properties accurately across different market phases. Explore the latest real estate market trends in India to see how carpet area disclosures are influencing buyer decisions today.

Want to Buy a Home Based on Carpet Area?

Understanding carpet area can help you make smarter investment decisions. Use this calculator anytime to estimate the space you’re actually getting.

Efficiency of space plays a significant role—not only in affordable housing but also in high-end projects. Discover how space planning influences the future of luxury real estate in India.

FAQs about Carpet Area

A good efficiency is 65%–75%. Anything below 60% means you’re paying for unused common space.

Yes, by measuring room sizes and adding them together. However, using our calculator saves time and improves accuracy.

A 12×12 room is 144 square feet (12 ft × 12 ft). You will need approximately 144 sq ft of carpet. It’s recommended to add an extra 5–10% (about 158 sq ft total) to allow for cutting, seams, and fitting.

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