Katha to Square Feet Conversion: Formula and Calculations

To convert katha to square feet correctly, first identify the katha measurement used where the property is located. Katha is a traditional land unit, so its size can differ by region.

• Formula: square feet = katha × square feet represented by 1 katha
• In Assam, 1 katha commonly equals 2,880 sq. ft.
• Under that convention, 2 katha equals 5,760 sq. ft.
• In West Bengal, 1 katha is commonly taken as 720 sq. ft.
• Katha is also used in Bihar, where local measurements can differ
• Square feet is a standard area unit used for property and floor-area measurement
• Check the applicable land record before using a katha conversion for a formal transaction

Before using the result for registration, valuation, inheritance, or another formal property decision, confirm the applicable katha measurement in the relevant land, revenue, sale deed, or registered property record.

Last updated: September 2026

Multiply the land area in katha by the square-foot value of one katha applicable to the property location.

Use this formula:

Square feet = katha × square feet in 1 katha

For example, using the Assam convention:

1 katha = 2,880 sq. ft.

For 2 katha:

2 × 2,880 = 5,760 sq. ft.

Therefore, 2 katha equals 5,760 sq. ft. under this convention.

The formula remains the same across locations. The value represented by one katha is what changes.

Use the katha measurement reflected in the property’s local land records rather than choosing a conversion only because it appears online.

The practical distinction is straightforward: a commonly quoted regional value can help with an initial comparison, while the property record should guide a formal decision.

Before calculating, check:

1. The state and district where the property is located.
2. The area shown in the land or revenue record.
3. The measurement convention used for that property.
4. The area stated in the sale deed or registered property document.
5. Whether the area converter supports the relevant location and measurement unit.

If two online sources show different katha values, do not average them or select the more convenient figure.

For an informal estimate, a commonly used regional value can help you compare areas. For registration, valuation, inheritance, or another formal purpose, use the conversion basis supported by the relevant property record.

Divide the land area in square feet by the square-foot value of one katha applicable to the property.

Use this formula:

Katha = Square feet ÷ square feet in 1 katha

Using the Assam example:

5,760 ÷ 2,880 = 2 katha

Therefore, 5,760 sq. ft. equals 2 katha under this convention.

Using the West Bengal convention:

1,440 ÷ 720 = 2 katha

The reverse calculation therefore depends on identifying the correct regional conversion factor first.

An area conversion calculator can perform the calculation after you select the relevant location, starting unit, target unit, and land area.

For example, to convert 3 katha using the Assam measurement:

1. Select Assam as the relevant state.
2. Select katha as the starting unit.
3. Select square feet as the target unit.
4. Enter 3 as the land area.
5. Review the converted value.

Using 2,880 sq. ft. per katha, the result is 8,640 sq. ft.

For a formal property transaction, compare the calculator result with the measurement recorded in the applicable land or revenue documents.

Land area is one of the factors considered when assessing property value.

Suppose a sale deed records a parcel in katha while another property document states its area in square feet. Converting both measurements using the correct local convention helps you check whether the recorded areas are consistent.

Accurate measurement can support:

• Comparing land areas
• Reviewing plot size
• Understanding valuation reports
• Checking sale deeds
• Comparing property and land records

Area alone does not determine property value. Location, permitted use, access, development, property type, legal status, condition, and market conditions can also influence valuation.

If you are considering property-backed borrowing, a mortgage loan involves a separate assessment of the property, its documents, and its valuation rather than relying only on a katha-to-square-feet conversion.

Yes, indirectly. Correct land measurement can support property assessment for a loan against property, particularly when different property documents express the area using different units. During assessment, the lender checks that the land area matches across your sale deed, land or revenue records and approved plan. If one document records the plot in katha and another in square feet, converting them using the katha value that applies in your state lets you confirm they match before you apply.

However, converting katha to square feet does not determine loan eligibility, the eligible loan amount or loan approval. A lender separately assesses factors such as:

• Property area and type
• Property location
• Ownership documents
• Legal and technical aspects
• Property valuation
• Income and repayment capacity

Once your property documents are in order, you can use property-backed finance to fund business expansion, education, medical needs or other large expenses. Bajaj Finance offers a loan against property of Rs. 3 lakh to Rs. 15.50 crore*, subject to eligibility and property valuation. Before applying, compare loan against property interest rates to evaluate your borrowing costs, and use a loan against property EMI calculator to estimate your EMIs based on the loan amount, interest rate and tenure. Planning to avail of property-backed finance? Check eligibility for a loan against property with Bajaj Finance and find out how much you can borrow.