1 Katha to Square Feet Calculator
Convert katha into square feet instantly with region-specific land measurement standards. Since the value of 1 katha differs across Bihar, Assam, West Bengal, Nepal, and other areas, this calculator helps you estimate land area with much better clarity.
Land Area Calculator
Ready to calculate
Enter a katha value, choose a regional standard, and click Calculate.
Important: katha is not a universally fixed unit. Always verify the local survey or registry standard before finalizing a property transaction.
Conversion Snapshot
This chart compares the converted land area across square feet, square meters, and acres, helping you interpret the result quickly.
- Fast planning: useful for buyers, brokers, and property researchers comparing listings.
- Region-aware: avoids the common mistake of assuming that 1 katha means the same thing everywhere.
- Practical output: also shows area in square meters and acres for cross-checking with official documents.
Expert Guide to Using a 1 Katha to Square Feet Calculator
A 1 katha to square feet calculator is one of the most practical land conversion tools for South Asian property research. The reason is simple: while many people speak about land in katha, formal documents, engineering drawings, planning reports, valuation sheets, and online property listings often use square feet or square meters. Without a reliable conversion, buyers and sellers can misunderstand the true size of a plot, which can affect pricing, negotiations, taxation, construction planning, and legal due diligence.
The challenge is that katha is a regional unit, not a globally standardized measurement. In one place, 1 katha may be understood as 720 square feet, while in another place it can be much larger. That means the answer to the question, “How many square feet is 1 katha?” depends on where the land is located and which local measurement tradition is being used. This calculator is designed to reduce that confusion by letting you select a region-specific conversion factor before calculating the result.
Quick rule: there is no single universal value for katha. Always match the conversion to the district, state, province, or country standard used in the land record or sale deed.
Why people search for 1 katha to square feet
Most users search this conversion when they are evaluating plot sizes for purchase, checking brokerage claims, preparing a house design, or translating local land descriptions into more widely understood units. Square feet is common in residential real estate because it is easy to visualize in terms of room size, built-up area, floor planning, and market comparison. If someone says a plot is 3 katha, that may not mean much to an architect or lender until it is converted into square feet.
- Property buyers use it to compare plots on a common measurement basis.
- Home builders use it to estimate building coverage and open space.
- Investors use it to compare price per square foot.
- Survey professionals use it as a quick reference during discussions.
- Families use it to verify inherited or subdivided land records.
How this calculator works
The logic is straightforward. The calculator multiplies the number of katha by the square foot value assigned to one katha in your selected region. For example, if a local standard says 1 katha equals 720 square feet, then:
- Enter the number of katha.
- Select the correct local standard.
- Multiply katha by the regional conversion factor.
- Read the result in square feet.
- Optionally review square meters and acres for cross-reference.
Formula:
Square feet = Katha × regional square feet per katha
So if your land is 1 katha and your region uses 720 square feet per katha, then the result is 720 square feet. If your region uses 1,361.25 square feet per katha, then 1 katha becomes 1,361.25 square feet.
Common regional values for katha
Different local systems use different conversion standards. The table below summarizes common reference values used in real estate discussions. These are useful estimates, but you should still verify your exact locality because district-level variations can occur.
| Region | Common value of 1 katha | Square meters | Notes |
|---|---|---|---|
| Assam | 720 sq ft | 66.89 sq m | Often used in traditional land measurement references |
| West Bengal | 720 sq ft | 66.89 sq m | Commonly used in residential land conversations |
| Bihar | 1,361.25 sq ft | 126.46 sq m | A larger katha standard than Bengal type references |
| Nepal | 3,645 sq ft | 338.63 sq m | Widely referenced in Nepali land measurement systems |
| Bangladesh reference | 720 sq ft | 66.89 sq m | Common informal benchmark, but locality matters |
Comparison: the same 1 katha can mean very different land sizes
This is where mistakes often happen. If two parties use different katha assumptions, the difference in actual area can be dramatic. The following comparison shows how much area 1 katha represents under different systems.
| Measurement standard | 1 katha in sq ft | Difference from 720 sq ft baseline | Approximate increase |
|---|---|---|---|
| Assam or West Bengal type | 720 | 0 sq ft | 0% |
| Bihar type | 1,361.25 | 641.25 sq ft | 89.06% |
| Nepal type | 3,645 | 2,925 sq ft | 406.25% |
This comparison shows why you should never rely on “1 katha” alone when reading an ad or discussing land value. A property priced attractively per katha may actually be much more expensive per square foot once the correct conversion is applied.
Why square feet matters in real estate decisions
Square feet is useful because it creates a common platform for comparison. Builders estimate foundation sizes, floor area, parking footprints, and setback planning in actual dimensions. Buyers compare the asking price to nearby plots using a price-per-square-foot method. Bankers, valuers, and legal teams also find square feet easier to align with maps, drawings, and municipal references.
For example, if a seller offers a 2 katha plot in a 720 square foot standard area, the total plot is 1,440 square feet. If another listing offers 2 katha in a Bihar-type standard, the area becomes 2,722.5 square feet. These are not comparable properties, even if both are described as 2 katha.
Best practices before buying or selling land measured in katha
- Ask for the exact square feet or square meter area in writing.
- Review the title deed, mutation record, survey map, and registry details.
- Confirm the local conversion rule with a surveyor or land records office.
- Use a calculator like this one as a first estimate, not the final legal basis.
- Cross-check whether road access, easements, or setbacks reduce usable area.
Converting square feet to other useful units
Land transactions increasingly involve multiple unit systems. This is why this calculator also shows square meters and acres. Here are the basic references:
- 1 square foot = 0.092903 square meters
- 1 acre = 43,560 square feet
Suppose your result is 720 square feet. That is about 66.89 square meters and about 0.0165 acres. This broader context can be useful when comparing urban plots with official planning records that often use metric units.
Example scenarios
Scenario 1: A buyer in Kolkata hears that a plot is 1 katha. If the local standard is 720 square feet, then the plot is 720 square feet. This may be enough for a compact urban plot, but not for a large detached home.
Scenario 2: A family in Bihar wants to divide 3 katha among heirs. Using 1,361.25 square feet per katha, the full land is 4,083.75 square feet. This gives a much clearer basis for subdivision than relying on the word katha alone.
Scenario 3: A Nepali land owner wants to estimate lot area for valuation. If one parcel is 1 katha, a common benchmark would place it at 3,645 square feet. That is a substantial area difference compared with Bengal-type usage.
Authoritative references and land measurement context
Although local customary units can vary, official and educational sources are useful for understanding broader land measurement systems and unit conversion standards. For general area conversion references and land administration context, you may consult:
- National Institute of Standards and Technology, U.S. government conversion guidance
- U.S. Geological Survey for mapping and land information context
- Penn State Extension land measurement and area conversion reference
Frequently asked questions
Is 1 katha always 720 square feet?
No. In some places, especially in Bengal-type usage, 1 katha is often taken as 720 square feet. But in Bihar, Nepal, and some local systems, the value is different.
Can I use this calculator for legal registration?
You can use it for estimation and planning, but legal registration should rely on official land records, a licensed survey, and the conversion standard recognized in your locality.
Why does my broker quote area in katha instead of square feet?
Katha remains a familiar local shorthand in many markets. However, serious comparison and valuation are easier in square feet or square meters.
What if my region uses a custom value?
Select the custom option in the calculator and enter the exact square feet per katha from your local records or survey documents.
Final takeaway
A 1 katha to square feet calculator is essential because land area terminology is local, while property decisions require precision. By converting katha into square feet, you gain a more practical and comparable understanding of plot size. The most important principle is accuracy of the regional standard. Once that factor is correct, you can estimate value, compare listings, evaluate development potential, and communicate with builders or legal professionals much more confidently.
Use the calculator above whenever you need a fast estimate, but always confirm the exact land measurement from official records before making financial or legal commitments. In land transactions, small misunderstandings in unit conversion can lead to large differences in area, price, and expectations.