Land area measurements in India are often expressed in different units — square feet, gaj, square meter, acre, hectare and traditional units like biswa. Converting correctly between these units helps when comparing plots, understanding property documents or planning a purchase.
This guide explains the units supported by the Harshonomics Land Area Calculator and the standard conversion values used. Biswa is treated carefully because its size is not fixed across India.
Use the
Land Area Calculator for instant conversion between Square Feet, Gaj, Square Meter, Acre, Hectare and Biswa.
Units Supported by the Calculator
- Square Feet (sq ft) – Most common for residential plots and built-up area.
- Square Gaj – Also called square yard. Widely used in North India.
- Square Meter (sq m) – Official metric unit.
- Acre – Common for larger and agricultural land.
- Hectare – Metric unit for larger land areas.
- Biswa – Traditional unit. Size varies by region, so the calculator asks for local Biswa size in square feet.
Standard Conversion Values Used
| From |
To |
Value |
| 1 Square Gaj |
Square Feet |
9 |
| 1 Square Meter |
Square Feet |
≈ 10.7639 |
| 1 Acre |
Square Feet |
43,560 |
| 1 Hectare |
Square Meters |
10,000 |
| 1 Hectare |
Acres |
≈ 2.471 |
Why Biswa Needs Special Care
Biswa does not have one fixed size across India. Its value in square feet changes by state and sometimes by local practice. That is why the calculator does not assume a single Biswa value. You need to enter the local Biswa size (in square feet) for accurate conversion.
Never use a Biswa conversion from one region for land in another region. Always confirm the local definition from revenue records or a local expert when the transaction is important.
How to Calculate Rectangular Plot Area
If you know the length and width of a rectangular plot (in the same unit):
Area = Length × Width
Example: 50 feet length × 30 feet width = 1,500 square feet.
You can then convert 1,500 sq ft into gaj, square meter, acre or any other supported unit using the Land Area Calculator.
Common Conversion Examples
Here are practical examples using the same standard values that the calculator follows:
- Square Feet to Gaj: Divide by 9.
Example: 1,800 sq ft ÷ 9 = 200 square gaj.
- Square Feet to Square Meter: Divide by 10.7639.
Example: 1,000 sq ft ≈ 92.9 sq m.
- Square Feet to Acre: Divide by 43,560.
Example: 21,780 sq ft = 0.5 acre.
- Acre to Square Feet: Multiply by 43,560.
Example: 2 acres = 87,120 sq ft.
- Hectare to Acre: Multiply by approximately 2.471.
Example: 1 hectare ≈ 2.471 acres.
You can verify any of these instantly on the Land Area Calculator.
How the Measure Land Feature Works
The calculator also offers a simple Measure Land option:
- Rectangle: Enter length and width. Area = Length × Width.
- Irregular (4 sides): It uses average length × average width to give an approximate area.
The Measure Land feature gives only an approximate area. For official, legal or registration purposes, always rely on a professional survey and the measurements recorded in the sale deed or government land records.
When This Calculator Is Most Useful
- Comparing two plots that are quoted in different units (e.g. one in sq ft and another in gaj or acre).
- Understanding the size of agricultural land shown in acres or hectares.
- Quickly converting a measurement given by a broker into a unit you are comfortable with.
- Getting a rough idea of plot size before visiting the site or talking to a lender.
For actual property purchase financing, you can combine this with the Home Loan Calculator or Loan Calculator.
Common Mistakes to Avoid
- Confusing running feet with square feet.
- Treating “gaj” as a length unit instead of square gaj (area).
- Using a Biswa value from one state for land in another state.
- Calculating area without converting length and width into the same unit first.
- Relying only on an online conversion for final legal documentation.
Biswa – Practical Advice
Because Biswa size is not uniform, the safest approach is:
- Ask the local revenue office, patwari or a reliable local property professional for the Biswa size used in that specific area (in square feet).
- Enter that exact value in the calculator.
- Double-check the final figure against the area mentioned in the property documents.
This prevents the most frequent source of error when traditional units are involved.
Step-by-Step: How to Use the Land Area Calculator
Using the calculator is straightforward:
- Enter the known area value in the input box.
- Select the unit of the value you entered (Square Feet, Gaj, Square Meter, Acre, Hectare or Biswa).
- If you selected Biswa, enter the local Biswa size in square feet (this step is essential for accuracy).
- Choose the unit you want to convert into.
- Click Convert to see the result.
You can also use the Measure Land section if you know the dimensions of the plot instead of the total area.
Practical Examples for Everyday Use
Example 1 – Residential Plot
A broker quotes a plot as 1,800 square feet.
You prefer to think in gaj.
1,800 ÷ 9 = 200 square gaj.
Example 2 – Agricultural Land
A field is listed as 2.5 acres.
In square feet: 2.5 × 43,560 = 1,08,900 sq ft.
In hectares: 2.5 ÷ 2.471 ≈ 1.01 hectares.
Example 3 – Using Biswa
In your area 1 Biswa = 1,361 square feet (confirm locally).
You have 15 Biswa.
Total area = 15 × 1,361 = 20,415 sq ft.
You can now convert 20,415 sq ft into acre, gaj or square meter using the calculator.
Why Accurate Conversion Matters
Small mistakes in unit conversion can lead to large differences in perceived plot size, especially with traditional units. This can affect:
- Price negotiation
- Comparison between two properties
- Loan amount estimation
- Understanding of what is written in the sale deed or registry documents
Using a consistent calculator and verifying against official documents reduces these risks.
Linking Land Measurement with Loan Planning
Once you know the correct area, the next practical step for many buyers is estimating the loan requirement. You can use:
Correct area measurement helps you judge whether the quoted price per square foot or per gaj is reasonable before you finalise financing.
Limitations of Any Online Land Area Calculator
- It depends entirely on the accuracy of the numbers you enter.
- It cannot replace a professional land survey.
- Traditional units like Biswa require the correct local value.
- For registration, mutation or legal disputes, only official measurements and documents matter.
Treat the calculator as a convenient estimation and comparison tool. For any important property transaction, cross-verify with the sale deed, government land records and, if needed, a licensed surveyor.
Frequently Asked Questions
How many square feet are in 1 gaj?
1 square gaj = 9 square feet. Always make sure you are referring to square gaj (area), not gaj as a length measurement.
How many square feet are in 1 acre?
1 acre = 43,560 square feet.
How many square meters are in 1 acre?
1 acre ≈ 4,046.86 square meters.
Is Biswa the same everywhere in India?
No. Biswa size varies by region and local land-record practice. That is why the calculator asks you to enter the local Biswa size in square feet.
Can I use this calculator for property registration?
The calculator is useful for general understanding and comparison. For registration, sale deed, mutation or any legal purpose, always rely on official documents, survey measurements and local land records.
What is the formula for a rectangular plot?
Area = Length × Width (both measurements must be in the same unit).
What if my plot is not rectangular?
The Measure Land feature can give an approximate area using average length and width. For accurate results on irregular plots, a professional survey is recommended.
Quick Reference Table
| Unit |
Equivalent |
| 1 Square Gaj |
9 Square Feet |
| 1 Square Meter |
≈ 10.7639 Square Feet |
| 1 Acre |
43,560 Square Feet |
| 1 Hectare |
10,000 Square Meters ≈ 2.471 Acres |
Related Tools on Harshonomics
Final Checklist Before Relying on Any Conversion
- I have used the same unit for length and width before calculating area.
- I have confirmed the local Biswa size if Biswa is involved.
- I have cross-checked the result with the area mentioned in property documents.
- I understand that online calculators are for estimation and comparison, not legal finality.
Disclaimer
This guide and the Land Area Calculator are provided for general educational and calculation purposes only. Results depend on the values and units entered by the user. Traditional land units such as Biswa can vary by location. For property purchase, sale, registration, legal documentation or government land records, always verify measurements with the applicable official documents, survey records or a qualified local professional. Harshonomics.com accepts no liability for decisions taken on the basis of these calculations.