Measure each room
Measure the inside dimensions of non-overlapping spaces. Deduct excluded areas only when they were included in your initial room measurements.
Interiors/Area · FREE
Carpet & Room Area
Measure rooms separately and understand why usable floor area differs from a RERA-oriented measurement.
Your planning summary
Complete the inputs to see your result and assumptions. No login or contact details required.
UNDERSTAND YOUR RESULT
Understand Your Usable Room Area
Add non-overlapping room measurements and separate excluded spaces. A measured room total is not a certified legal carpet-area statement.
Separate excluded areas
RERA carpet area includes internal partition walls but excludes external walls, service shafts and exclusive balcony/verandah/open terrace. A room sum alone is not a certified legal measurement.
Review usable space
Review the displayed breakdown and assumptions before using this estimate.
Explore an illustrative example
10 × 10 ft room. Use the example button in the calculator to apply these editable inputs.
Illustrative measurements or assumptions only; not an approved design, quote or offer.
What changes your result?
- Do not overlap rooms. Measure the inside dimensions of non-overlapping spaces. Deduct excluded areas only when they were included in your initial room measurements.
- Understand the legal distinction. RERA carpet area includes internal partition walls but excludes external walls, service shafts and exclusive balcony/verandah/open terrace. A room sum alone is not a certified legal measurement.
Assumptions and limits
Confirm measurements, inclusions and price assumptions. These planning results do not replace professional engineering, legal or lender advice.
Results retain the assumptions you selected. Compare like-for-like areas and avoid counting the same item twice.
View Technical Calculation Details
Measured usable area=Σ(room L×W)−deductions; RERA-oriented estimate=usable+supplied internal-partition area.
Currency totals: 2 decimal places; geometry and quantities: 6. Whole units/boxes round upward with floating-point ULP correction; internal calculation precision is retained.
Formula 1.0.0 · Content/schema 1
Sources and review information
References last checked 2026-10-29. This is not certification of a fee schedule or property.
Your questions, answered
Do not overlap rooms
Measure the inside dimensions of non-overlapping spaces. Deduct excluded areas only when they were included in your initial room measurements.
Understand the legal distinction
RERA carpet area includes internal partition walls but excludes external walls, service shafts and exclusive balcony/verandah/open terrace. A room sum alone is not a certified legal measurement.
Can I save or download for free?
Yes. PDF and comparisons are free. Saving a report is optional and needs consent; a calculation needs no contact details.
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