Productive ToolboxDecimal Land Calculator
Convert Decimal and Shotok land units to Acre, Katha, Bigha, Square Feet, Square Meter, Hectare, and Cent. Supports Bangladesh, West Bengal, Bihar, Nepal, and global standards.
Decimal Land Calculator
Convert land area between Decimal, Acre, Katha, Bigha, Square Feet, Square Meter, Hectare, Shotok, and Cent using regional standards.
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What Is a Decimal Land Calculator?
A decimal land calculator is a free online tool that converts land area between Decimal — also called Shotok in Bengali — and all major South Asian and international land units: Acre, Katha, Bigha, Square Feet, Square Meter, Hectare, and Cent. It answers the question that property buyers, sellers, and surveyors across Bangladesh and eastern India deal with daily: how many square feet is this plot, and what is it in acres?
The challenge is that land measurement in South Asia is not uniform. One Decimal is always 435.6 square feet — that part is fixed. But 1 Katha in Bangladesh (720 sq ft) is a completely different size from 1 Katha in Bihar (1,361.25 sq ft) or 1 Katha in Nepal (3,645 sq ft). Using the wrong regional standard in a property transaction or legal document can produce conversion errors that misrepresent a plot by a factor of 2 or more. This tool handles regional differences automatically through its preset selector.
Built for property buyers and sellers in Bangladesh and India, real estate agents, land surveyors, legal document preparers, farmers, and NRIs managing property abroad who need fast and accurate conversions across all regional units. Enter any value, select your region, and get every conversion at once — browser-based, free, no signup required.
How Decimal Land Conversion Works
Every conversion is anchored to the fixed relationship between Decimal and Square Feet, then scaled through the regional unit definitions. The core chain is:
Core Conversion Relationships
1 Decimal (Shotok) = 435.6 sq ft = 40.47 sq m
100 Decimal = 1 Acre = 43,560 sq ft
1 Hectare = 247.1 Decimal = 2.471 Acres
Output Unit = (Input × Input sq ft value) ÷ Output sq ft value
Key points about how regional presets affect the calculation:
- Decimal / Shotok / Acre / Square Feet / Square Meter / Hectare / Cent — fixed globally, same in every region
- Katha — 720 sq ft (Bangladesh / West Bengal), 1,361.25 sq ft (Bihar), 3,645 sq ft (Nepal)
- Bigha — 14,400 sq ft (Bangladesh / West Bengal), 27,225 sq ft (Bihar), 72,900 sq ft (Nepal)
- Always match the regional preset to the location of the land being measured
How to Use the Decimal Land Calculator
Step-by-Step Guide
- 1Enter your land area value: Type the numeric land area into the input field. You can enter whole numbers or decimals — for example, 8, 2.5, or 33.06. The calculator accepts any positive value and begins converting immediately as you type.
- 2Select your input unit: Choose the unit you are converting from — Decimal/Shotok, Acre, Katha, Bigha, Square Feet, Square Meter, Hectare, or Cent. The input unit determines the base value for all output conversions.
- 3Choose your regional standard: Select the region that matches your land records: Bangladesh, West Bengal, Bihar, Nepal, or Global Standard. This affects how Katha and Bigha are calculated, since those units have different sizes by region. Decimal and Acre are the same across all regions.
- 4Read all conversions simultaneously: The results panel displays your value converted into all supported units at once — no need to run separate calculations. Scroll through to find the output unit you need.
- 5Use the conversion reference table: Check the reference table below for common pre-calculated values. This is useful for quick lookups without entering a value — for example, confirming that 5 Decimal equals 2,178 square feet.
- 6Copy or export your result: Click any result to copy it to clipboard, or use the export button to download the full conversion as a text file for use in legal documents, property records, or client reports.
What This Calculator Provides
- ✓Instant conversion across 9 land units simultaneously
- ✓Regional presets: Bangladesh, West Bengal, Bihar, Nepal, Global
- ✓Decimal / Shotok input and output
- ✓Acre, Katha, Bigha conversions
- ✓Square Feet, Square Meter, Hectare, Cent
- ✓Results update in real time as you type
- ✓Copy individual results to clipboard
- ✓Export full conversion as text file
- ✓Browser-based — no data sent to any server
- ✓No signup required
Real-World Use Cases
Residential Property Purchase in Bangladesh
A buyer in Dhaka is looking at a plot listed as 5 Shotok. Their bank requires the plot size in square meters for the mortgage application. They enter 5 Decimal, select Bangladesh preset, and the calculator instantly returns 202.34 square meters and 2,178 square feet. They copy the square meter value directly into the bank form — no manual calculation, no conversion error risk.
Inherited Land Division Among Siblings
A family in West Bengal inherits a 33 Decimal agricultural plot. Three siblings need to divide it equally. Each sibling's share is 11 Decimal — but the lawyer's document requires the area in both Katha and square meters. Entering 11 Decimal (West Bengal preset) returns 6.65 Katha and 444.6 square meters. The lawyer uses both figures in the deed without needing to verify the arithmetic separately.
NRI Checking Property Value Before Purchase
An NRI living in the UK receives a property listing from Bangladesh showing 8 Shotok at a quoted price per Decimal. They are unfamiliar with Shotok but understand acres and square feet. Entering 8 in the calculator immediately shows 0.08 Acres and 3,484.8 square feet — familiar reference points that let them judge whether the price per area is reasonable compared to properties they know.
Agricultural Land Lease Calculation
A farmer in Bihar is leasing 2 Bigha of rice paddy land. The lease agreement uses Decimal for the area and sets a per-Decimal annual rate. They need to know how many Decimal 2 Bigha equals under Bihar standards. Entering 2 Bigha (Bihar preset) returns 125 Decimal — a very different result than entering 2 Bigha under Bangladesh standards, which would return only 66.12 Decimal. The regional preset prevents a costly calculation error.
Building Permit Application
A developer in Chittagong submits a building permit application for a 12.5 Decimal plot. The municipal authority requires plot area in both square meters and square feet for the application form. The calculator returns 505.9 square meters and 5,445 square feet in one step. The developer pastes both values directly into the digital permit form and submits without needing a separate converter for each unit.
Real Estate Listing Standardization
A real estate agency in Bangladesh manages 40 property listings, each recorded in the seller's preferred unit — some in Shotok, some in Katha, some in square feet. To publish a standardized listing database, the agent processes each entry through the calculator to get every property in a consistent Decimal + square meter + square feet format. The export function produces a text file for each conversion that can be referenced in the listing.
Tips & Common Mistakes
Pro Tips
- 💡Always match the regional preset to the location of the land — not your own location. If the land is in Bihar but you are checking from Dhaka, select Bihar preset. Using the wrong region makes Katha and Bigha conversions wrong by a factor of 2–5×.
- 💡When reading a Bangladeshi property document, 'Shotok' and 'Decimal' are always the same unit. If you see both in the same document (e.g., '8 Shotok / 8 Decimal'), they are confirming the same measurement in two names, not two different areas.
- 💡For legal documents and bank forms, always include both Decimal and Square Feet in your submission. Most South Asian financial institutions accept Decimal for land records but require Square Feet or Square Meters for mortgage applications.
- 💡The 100 Decimal = 1 Acre relationship is the fastest mental check for reasonableness. A 50 Decimal plot is half an acre. A 10 Decimal plot is about 4,356 square feet — roughly the size of a small residential plot in a suburban area.
- 💡When comparing property prices across different cities or regions that use different primary units, always convert everything to Acre or Square Meter first. Comparing Decimal prices from Bangladesh directly with Katha prices from Bihar will be misleading because the Katha sizes differ.
- 💡If you receive a plot size in Cent (used in Kerala and Tamil Nadu), note that 1 Cent = 1 Decimal = 435.6 square feet. They are the same unit with different regional names.
Common Mistakes to Avoid
- ✕Don't assume Katha is the same size everywhere. A 3 Katha plot in Bangladesh is 2,160 sq ft. A 3 Katha plot in Bihar is 4,083.75 sq ft. Using the wrong regional Katha definition in a purchase negotiation could mean a 90% discrepancy in what you think you are buying.
- ✕Don't confuse Decimal with Dismil. In some older Indian land records, 'Dismil' appears as an alternate spelling of Decimal. They are the same unit — 1 Dismil = 1 Decimal = 435.6 sq ft. If you see 'Dismil' on a historical deed, treat it identically to Decimal.
- ✕Don't convert without first confirming the source unit. If a document says '6 kathas' without specifying the region, do not assume Bangladesh standard. Ask for the region or cross-reference the total area in square feet against the listed Katha count before committing to a conversion.
- ✕Don't skip the decimal point. Entering '5' when you mean '0.5 Acre' produces a result 10× too large. Double-check that the input value and input unit match exactly what appears on the source document.
- ✕Don't rely on generic online converters that don't support regional presets. A converter that treats Katha as a fixed size will give wrong results for any region that isn't Bangladesh. Always use a tool that lets you specify the regional standard.
Decimal Land Conversion Reference Tables
Decimal ↔ Common Units
| Decimal (Shotok) | Acre | Sq Feet | Sq Meter |
|---|---|---|---|
| 1 | 0.01 | 435.6 | 40.47 |
| 2 | 0.02 | 871.2 | 80.94 |
| 5 | 0.05 | 2,178 | 202.3 |
| 8 | 0.08 | 3,484.8 | 323.8 |
| 10 | 0.10 | 4,356 | 404.7 |
| 20 | 0.20 | 8,712 | 809.4 |
| 33 | 0.33 | 14,374.8 | 1,335.5 |
| 50 | 0.50 | 21,780 | 2,023.4 |
| 100 | 1.00 | 43,560 | 4,046.9 |
Acre ↔ Decimal
| Acre | Decimal (Shotok) | Sq Feet |
|---|---|---|
| 0.05 | 5 | 2,178 |
| 0.10 | 10 | 4,356 |
| 0.25 | 25 | 10,890 |
| 0.50 | 50 | 21,780 |
| 1.00 | 100 | 43,560 |
| 1.50 | 150 | 65,340 |
| 2.00 | 200 | 87,120 |
| 5.00 | 500 | 217,800 |
| 10.00 | 1,000 | 435,600 |
Regional Standards: Katha & Bigha Sizes
| Region | 1 Katha (sq ft) | 1 Katha (Decimal) | 1 Bigha (sq ft) | 1 Bigha (Decimal) |
|---|---|---|---|---|
| Bangladesh | 720 | 1.653 | 14,400 | 33.06 |
| West Bengal | 720 | 1.653 | 14,400 | 33.06 |
| Bihar | 1,361.25 | 3.125 | 27,225 | 62.5 |
| Nepal | 3,645 | 8.37 | 72,900 | 167.3 |
* 1 Decimal = 435.6 sq ft and 1 Acre = 100 Decimal are fixed across all regions. Only Katha and Bigha vary by location.
Frequently Asked Questions
What is a decimal land calculator?
A decimal land calculator is a free online tool that converts land area measurements between Decimal and other units — Acre, Katha, Bigha, Shotok, Square Feet, Square Meter, Hectare, and Cent. It is used across South Asia, particularly in Bangladesh, West Bengal, Bihar, and Nepal, where Decimal (also called Shotok in Bengali) is the standard base unit for residential and agricultural land records.
What is Decimal in land measurement?
Decimal is a unit of land area equal to 435.6 square feet or 40.47 square meters. It is 1/100th of an Acre — meaning 100 Decimal equals exactly 1 Acre. The unit is widely used in Bangladesh and eastern India for recording plot sizes in property deeds, government land records, and real estate transactions. It is also called Shotok in Bengali, and the two terms are used interchangeably.
What is Shotok and how does it relate to Decimal?
Shotok is the Bengali word for Decimal. They represent the same unit of land measurement — 1 Shotok equals 1 Decimal equals 435.6 square feet. In Bangladesh, land records, property deeds, and sales agreements often use 'Shotok' while official government documents may use 'Decimal.' This calculator accepts input in either term and converts correctly to all other units.
How many Decimal in 1 Acre?
1 Acre equals exactly 100 Decimal (or 100 Shotok). Since 1 Acre = 43,560 square feet and 1 Decimal = 435.6 square feet, dividing gives precisely 100. This is the most important relationship to remember: Decimal is simply a percentage of an Acre. A 50 Decimal plot is half an acre; a 25 Decimal plot is a quarter acre.
How many square feet in 1 Decimal?
1 Decimal equals 435.6 square feet. This value is fixed and consistent across Bangladesh, West Bengal, Bihar, Nepal, and global standards. It does not change by region. What does vary by region is how many Decimals make up 1 Katha and 1 Bigha — those relationships differ between Bangladesh, Bihar, and Nepal, which is why this calculator includes a regional preset selector.
How many Decimal in 1 Katha (Bangladesh)?
In Bangladesh, 1 Katha equals 720 square feet. Since 1 Decimal equals 435.6 square feet, 1 Katha equals approximately 1.653 Decimal. Going the other way, 1 Decimal equals approximately 0.605 Katha. This ratio applies to Bangladesh and West Bengal. In Bihar, 1 Katha equals 1,361.25 square feet, making 1 Katha equal to approximately 3.125 Decimal — a significantly different value.
How many Decimal in 1 Bigha (Bangladesh)?
In Bangladesh, 1 Bigha equals 14,400 square feet, which equals approximately 33.06 Decimal. So 1 Decimal equals approximately 0.0302 Bigha. In Bihar, 1 Bigha equals 27,225 square feet (approximately 62.5 Decimal), and in Nepal, 1 Bigha equals 72,900 square feet (approximately 167.3 Decimal). Always confirm which regional standard applies to your land records before converting.
How do I convert Shotok to Decimal?
No conversion is needed — 1 Shotok equals 1 Decimal exactly. They are the same unit. If a land document lists a plot as 8 Shotok, that plot is 8 Decimal, which equals 3,484.8 square feet (8 × 435.6) or 0.08 Acre. Enter the value in this calculator and select Decimal/Shotok as the input unit to see conversions to all other units instantly.
How do I convert 1 Acre to Decimal?
1 Acre equals 100 Decimal. To convert any acreage to Decimal, multiply by 100. For example: 0.5 Acres = 50 Decimal, 2.5 Acres = 250 Decimal, 0.25 Acres = 25 Decimal. To convert Decimal back to Acres, divide by 100. Enter any value in this calculator and it performs all conversions instantly without manual arithmetic.
Is my data private when using this calculator?
Yes. All calculations run entirely in your browser using JavaScript. Your land values and inputs are never transmitted to any server, stored in any database, or accessible to anyone other than you. This means you can safely enter real property measurements, plot sizes from legal documents, or confidential real estate data without any information leaving your device.
Who Uses This Decimal Land Calculator?
Property Buyers & Sellers
Verify plot sizes when reviewing listings, negotiate based on accurate per-Decimal pricing, and confirm that a property's stated area in Shotok matches the square footage before signing any agreement.
Legal Document Preparers
Convert land areas between Decimal, Katha, and Square Feet for property deeds, mutation applications, and inheritance documents that require measurements in multiple units simultaneously.
Land Surveyors
Produce multi-unit survey reports covering Decimal, Acre, and Square Meter in a single step. Confirm that field measurements recorded in one unit match the legal records filed in another.
Farmers & Agricultural Workers
Calculate crop field sizes, fertilizer requirements per Decimal, irrigation planning, and lease agreements for paddy land and vegetable plots using the exact regional unit in local use.
NRIs Managing Overseas Property
Convert Shotok or Decimal plot sizes into Acres and Square Feet to understand property values in familiar units, compare pricing with international markets, and communicate with overseas agents.
Developers & Construction Teams
Convert land area for building permit applications, calculate FAR (Floor Area Ratio) requirements, plan project layouts, and prepare tender documents that specify area in multiple required units.