Understanding Land & Property Area Measurement in India (2026)
Real estate transactions in India utilize a mix of international standard units (Square Feet, Square Meters, Acres) and regional traditional land units (Gaj, Bigha, Guntha, Cent, Ground, Kanal, Kattha).
Complete State-Wise Land Unit Conversion Reference
| Land Unit | Equivalent in Sq. Ft. | Primary States / Regions |
|---|---|---|
| 1 Gaj (Square Yard) | 9 Sq. Ft. | Delhi NCR, Haryana, Punjab, UP, Rajasthan |
| 1 Acre | 43,560 Sq. Ft. (4,840 Gaj) | All India Standard Agricultural Unit |
| 1 Hectare | 107,639 Sq. Ft. (2.471 Acres) | Official Government Land Registry |
| 1 Guntha | 1,089 Sq. Ft. (40 Gunthas = 1 Acre) | Maharashtra, Gujarat, Karnataka, Telangana |
| 1 Cent | 435.6 Sq. Ft. (100 Cents = 1 Acre) | Kerala, Tamil Nadu, Andhra Pradesh |
| 1 Ground | 2,400 Sq. Ft. | Tamil Nadu (Chennai & Urban Outskirts) |
| 1 Pucca Bigha (UP) | 27,225 Sq. Ft. (3,000 Gaj) | Uttar Pradesh, MP, Rajasthan |
| 1 Bengal / Bihar Bigha | 14,400 Sq. Ft. (1,600 Gaj) | West Bengal, Bihar, Assam |
| 1 Kanal | 5,445 Sq. Ft. (20 Marlas) | Punjab, Haryana, Jammu & Kashmir, HP |
| 1 Marla | 272.25 Sq. Ft. | Punjab, Haryana, HP |
| 1 Kattha / Biswa | 1,361.25 Sq. Ft. (20 Kattha = 1 Bigha) | UP, Bihar, Assam |
Carpet Area vs Built-Up Area vs Super Built-Up Area (RERA 2026)
Under RERA (Real Estate Regulation and Development Act), property developers are legally mandated to sell apartments based strictly on RERA Carpet Area:
- RERA Carpet Area: The net usable floor area of an apartment, excluding internal wall thickness. Includes bedroom, living room, kitchen, and bathroom floor areas.
- Built-Up Area: Carpet Area + Internal/External Wall Thickness + Balconies. Typically 10-15% larger than carpet area.
- Super Built-Up Area: Built-up area + Proportional share of common building areas (staircase, elevator shafts, clubhouse, lobby). The extra area added is known as Loading Percentage (typically 25-35%).
Step-by-Step Worked Conversion Examples
Worked Example 1: Converting a 30 ft × 50 ft Residential Plot
• Step 1: Plot Area in Sq. Ft. = 30 ft × 50 ft = 1,500 Sq. Ft.
• Step 2: Convert to Gaj = 1,500 ÷ 9 = 166.67 Gaj.
• Step 3: Convert to Cents = 1,500 ÷ 435.6 = 3.44 Cents.
• Step 4: If plot costs ₹60 Lakhs, Rate per Sq. Ft. = ₹60,00,000 ÷ 1,500 = ₹4,000/sq.ft.
Worked Example 2: Converting Agricultural Land (2.5 Acres) into Bigha
• Step 1: 2.5 Acres in Sq. Ft. = 2.5 × 43,560 = 108,900 Sq. Ft.
• Step 2: Convert to UP Pucca Bigha = 108,900 ÷ 27,225 = 4.0 Bigha.
• Step 3: Convert to Maharashtra Gunthas = 108,900 ÷ 1,089 = 100 Gunthas.
Key Benefits of Using ArthCalculator Area Converter
- Eliminates Land Buying Errors: Prevents misunderstandings when local brokers quote plot sizes in regional terms (e.g. Bigha or Guntha) while bank home loans demand Sq. Ft.
- Instant Property Valuation: Automatically calculates per Sq. Ft. and per Gaj price rate from total property deal value.
- All-India Multi-Unit Support: Real-time conversion into 13 major standardized and regional land metrics.
Limitations & Important Real Estate Rules (2026)
- Regional Variations in Bigha: Bigha sizes differ significantly by state! 1 Bigha in UP is 27,225 Sq. Ft., whereas 1 Bigha in West Bengal is 14,400 Sq. Ft. Always verify local revenue records.
- Super Built-Up vs Carpet Area: RERA rules require property transactions to be billed on Net Carpet Area, not Super Built-Up Area.
Property Buyer Pro Tip (2026)
When purchasing residential plots, always cross-check the title deed area in Square Meters or Square Feet against state Khata/Patta records before executing stamp duty registration!