House Area Calculator - Plan Your Home
This house area calculator helps you plan construction, estimate carpet area vs built-up area, and understand total house size for homes in India, UK, and US.
Typical House Sizes
1BHK apartment (India)
2BHK apartment
3BHK apartment
Independent villa
Standard Room Sizes (India)
| Room Type | Typical Size (sqft) | Dimensions (feet) |
|---|---|---|
| Master Bedroom | 150-200 | 12×15 to 15×15 |
| Bedroom | 100-150 | 10×12 to 12×12 |
| Living Room | 200-300 | 15×15 to 20×15 |
| Kitchen | 80-120 | 8×10 to 10×12 |
| Bathroom | 35-50 | 5×7 to 7×7 |
| Dining Room | 100-150 | 10×12 to 12×12 |
Frequently Asked Questions (FAQs)
How to calculate house construction area?
Add all room areas (length × width) including bedrooms, living room, kitchen, bathrooms. Then add 15-20% for circulation (corridors, walls). For built-up area, add 10-15% for walls and balconies.
What is a good size for a 3BHK?
In India, a comfortable 3BHK is 1,200-1,500 sqft (carpet area). In the US, 3-bedroom houses average 1,600-2,000 sqft. UK 3-bed houses typically range from 1,100-1,400 sqft.
How much area is lost to walls?
Typically 10-15% of built-up area is walls. If your carpet area is 1,000 sqft, built-up area will be around 1,150 sqft. External walls are thicker (9-12 inches), internal walls are thinner (4-6 inches).
What is circulation area?
Circulation area includes corridors, passages, staircase, and entrance areas. Add 10-20% to total room area for circulation. Larger homes need more circulation space.
Minimum room sizes in India?
Master bedroom: Min 120 sqft, Other bedrooms: Min 80 sqft, Kitchen: Min 60 sqft, Bathroom: Min 30 sqft. These are NBC (National Building Code) minimums for habitable rooms.
How to calculate for multi-story house?
Calculate each floor separately, then add together. First floor might have living room, kitchen, 1 bedroom. Second floor might have 2-3 bedrooms. Add staircase area to both floors.
Difference between carpet and super built-up?
Carpet area: Usable floor space. Super built-up: Includes walls, balconies, and share of common areas (20-30% more). See our detailed guide.