One decimal is 435.6 sq ft, one hundredth of an acre. It is the same size as the south Indian cent, under a different name. Land records in West Bengal, Bihar and Bangladesh give area in decimals (in Bangladesh, shotok or shotangsho), so multiplying by 435.6 turns a recorded area into square feet: 4 decimals are 1,742.4 sq ft and 10 decimals are 4,356 sq ft.
Formula
Decimal to Square Feet conversion table
| Decimal | Square Feet |
|---|---|
| 0.25 decimal | 108.9 ft² |
| 0.5 decimal | 217.8 ft² |
| 1 decimal | 435.6 ft² |
| 2 decimal | 871.2 ft² |
| 3 decimal | 1,306.8 ft² |
| 4 decimal | 1,742.4 ft² |
| 5 decimal | 2,178 ft² |
| 6 decimal | 2,613.6 ft² |
| 7 decimal | 3,049.2 ft² |
| 8 decimal | 3,484.8 ft² |
| 9 decimal | 3,920.4 ft² |
| 10 decimal | 4,356 ft² |
| 15 decimal | 6,534 ft² |
| 20 decimal | 8,712 ft² |
| 25 decimal | 10,890 ft² |
| 30 decimal | 13,068 ft² |
| 40 decimal | 17,424 ft² |
| 50 decimal | 21,780 ft² |
| 60 decimal | 26,136 ft² |
| 70 decimal | 30,492 ft² |
| 75 decimal | 32,670 ft² |
| 80 decimal | 34,848 ft² |
| 90 decimal | 39,204 ft² |
| 100 decimal | 43,560 ft² |
| 250 decimal | 108,900 ft² |
| 500 decimal | 217,800 ft² |
| 1,000 decimal | 435,600 ft² |
Where you’ll use it
Buyers often hear a plot described in katha or bigha but see decimals on the record of rights or khatiyan. Converting decimals to square feet lets you check the seller’s katha figure against the official area and against your own tape measurements. It also helps when a bank, a builder or a municipal office asks for square feet and the only document you have is in decimals.
Tip: In West Bengal and Bangladesh, 1 katha (720 sq ft) is about 1.65 decimal and 1 bigha about 33 decimal. Rounding 33.06 down to 33 drops about 25 sq ft per bigha, which is fine for estimates but not for a deed.