Square Feet to Dismil: The Essential Land Conversion Guide
In the diverse landscape of Indian real estate, land measurement units vary significantly from state to state. While urban apartments are sold in Square Feet (sq ft), agricultural land and plots in Eastern India (Bihar, West Bengal, Jharkhand, Odisha) are often measured in Dismil (also known as Decimal). Toolvala.in's Square Feet to Dismil Converter bridges this gap, providing instant and precise conversions for buyers, sellers, and property agents.
This guide covers the mathematical formula, the history of the Dismil unit, and why accurate conversion is critical for property registration.
What is a Dismil (Decimal)?
The Dismil is a traditional unit of land area used in India and Bangladesh. It represents one-hundredth of an acre. The term is derived from the English word "Decimal".
- 1 Acre = 100 Dismil
- 1 Dismil = 435.6 Square Feet
It is the standard unit for land revenue records (Khatian/Jamabandi) in states like Bihar and West Bengal.
The Conversion Formula
Converting between these two units is a simple mathematical process based on the constant factor of 435.6.
Dismil = Area in Sq Ft ÷ 435.6
Example: You have a plot of 1000 sq ft.
1000 ÷ 435.6 = 2.295 Dismil.
Sq Ft = Area in Dismil × 435.6
Example: You are buying 5 Dismil of land.
5 × 435.6 = 2,178 Sq Ft.
Why is 435.6 the Magic Number?
The logic comes from the Imperial System:
- 1 Acre = 43,560 Square Feet.
- Since 1 Dismil is 1/100th of an Acre, we divide 43,560 by 100.
- Result: 435.6 Sq Ft.
Conversion Table: Sq Ft to Dismil
Here is a quick reference chart for common plot sizes:
| Square Feet (sq ft) | Dismil (Decimal) | Approx Plot Size |
|---|---|---|
| 435.6 | 1.00 | 20ft x 21.7ft |
| 500 | 1.15 | 20ft x 25ft |
| 1,000 | 2.30 | 25ft x 40ft |
| 1,200 | 2.75 | 30ft x 40ft |
| 1,500 | 3.44 | 30ft x 50ft |
| 2,000 | 4.59 | 40ft x 50ft |
| 2,400 | 5.51 | 40ft x 60ft (1 Ground) |
| 5,000 | 11.48 | 50ft x 100ft |
Regional Variations and Confusion
While Dismil is a standardized unit (always 435.6 sq ft), other local units like Katha and Bigha vary wildly by district.
- In Patna (Bihar), 1 Katha ≈ 1361 sq ft.
- In other parts of Bihar, 1 Katha might be 720 sq ft.
Because of this confusion, legal documents often mention the area in Dismil or Hectares to avoid disputes. Always convert local units to Dismil or Sq Ft for a standardized understanding of the property size.
How to Measure Land Area?
If you have an irregular plot, follow these steps before using the calculator:
- Divide the plot into rectangles and triangles.
- Measure the length and width of each section in feet.
- Calculate the area of each section (Length × Width for rectangles, 0.5 × Base × Height for triangles).
- Sum up the areas to get the total Square Feet.
- Enter the total into Toolvala.in's Converter to get the value in Dismil.
Frequently Asked Questions (FAQs)
1. Is 1000 sq ft equal to 2.30 Dismil?
Yes, approximately. The exact value is 2.29568... but for general real estate discussions, it is rounded to 2.30 Dismil.
2. How many Dismil is 1 Katha?
This depends on the region. In standard measurements (where 1 Katha = 1361.25 sq ft), 1 Katha is equal to 3.125 Dismil.
3. Is Dismil used in South India?
Not commonly. South India (Kerala, Tamil Nadu) uses Cent. Interestingly, 1 Cent is mathematically identical to 1 Dismil (435.6 sq ft).
Accurate land measurement is the foundation of a safe property investment. Use Toolvala.in to ensure you get exactly what you pay for!