What is Katha to Square Feet Conversion? BrokerNetwork Explains
katha to square feet Few land units in India cause as much confusion as the katha. Spelled katha, kattha, or cottah depending on the region, this traditional unit dominates property conversations across Bihar, West Bengal, Assam, Jharkhand, and parts of neighbouring states, and yet its value changes dramatically from one state to the next, and sometimes from one district to the next. A buyer who assumes the wrong katha can misjudge a plot’s size by a factor of four. That is why the katha to square feet conversion is one of the most searched and most misunderstood calculations in Indian real estate, and why we at Broker Network decided to settle the matter with one definitive guide. In this article, Broker Network explains exactly what a katha is, the correct katha to square feet values for each major region, the formulas, ready conversion lists, worked examples, the costly mistakes to avoid, and how Broker Network makes the entire katha to square feet question safe, simple, and verified for every user.
What is a Katha? A Traditional Unit With Many Faces
A katha is a traditional unit of land area used across eastern India and the surrounding region, historically defined as a fraction of the bigha, another traditional unit. Because the bigha itself varies from state to state, the katha inherited that variation, and today the word katha refers to genuinely different areas depending on where you stand. In West Bengal, a katha, often spelled cottah, is one-twentieth of a bigha of 14,400 square feet, making one katha equal to 720 square feet. In Bihar and much of Jharkhand, the common katha is substantially larger at approximately 1,361.25 square feet, though district-level customs can push the local value higher or lower. In Assam, a katha, locally lecha-linked, is one-fifth of a bigha of 14,400 square feet, making one katha equal to 2,880 square feet.
Read those three numbers again: 720, 1,361.25, and 2,880 square feet, all answering to the same word katha. This is why we at Broker Network insist that the first step of any katha to square feet conversion is not arithmetic at all; it is geography. Identify the state and district convention first, and only then pick up the calculator.
Katha to Square Feet in West Bengal: The 720 Square Feet Standard
In West Bengal, including Kolkata and its booming suburbs, the katha is firmly standardised at 720 square feet. The system is tidy: 16 chataks make one katha, 20 kathas make one bigha of 14,400 square feet, and one chatak is therefore 45 square feet. So the katha to square feet conversion in Bengal is simply: Square Feet = Kathas × 720.
Ready values for daily use: 1 katha equals 720 square feet. 2 kathas equal 1,440 square feet. 3 kathas equal 2,160 square feet. 4 kathas equal 2,880 square feet. 5 kathas equal 3,600 square feet. 6 kathas equal 4,320 square feet. 8 kathas equal 5,760 square feet. 10 kathas equal 7,200 square feet. 20 kathas, one full bigha, equal 14,400 square feet. In square yards, one Bengal katha is 80 square yards, a round figure that makes price comparisons with gaj-based markets refreshingly easy. We at Broker Network apply this 720 square feet standard to every West Bengal listing, verified against the actual deed and porcha of the property.
Katha to Square Feet in Bihar and Jharkhand: The 1,361.25 Square Feet Convention
In Bihar, and across much of Jharkhand, the widely used convention sets one katha at approximately 1,361.25 square feet, which corresponds to a bigha of 20 kathas equalling about 27,225 square feet. Under this convention, the katha to square feet conversion is: Square Feet = Kathas × 1,361.25.
Ready values: 1 katha equals 1,361.25 square feet. 2 kathas equal 2,722.5 square feet. 3 kathas equal 4,083.75 square feet. 4 kathas equal 5,445 square feet, which interestingly equals exactly one kanal of the northern system. 5 kathas equal 6,806.25 square feet. 10 kathas equal 13,612.5 square feet. 16 kathas equal 21,780 square feet, exactly half an acre. 32 kathas equal 43,560 square feet, exactly one acre. However, and this is critical, district customs in Bihar can vary, with some localities using kathas from roughly 750 up to 2,000 square feet. We at Broker Network therefore never assume the state default in Bihar; we verify the district convention from the jamabandi, the khatiyan, and local revenue practice before publishing any katha to square feet figure.
Katha to Square Feet in Assam: The 2,880 Square Feet Standard
In Assam, the system again changes. One bigha is 14,400 square feet, the same as Bengal, but it divides into only 5 kathas, making one katha equal to 2,880 square feet, and each katha further divides into 20 lechas of 144 square feet each. The katha to square feet conversion in Assam is therefore: Square Feet = Kathas × 2,880.
Ready values: 1 katha equals 2,880 square feet. 2 kathas equal 5,760 square feet. 3 kathas equal 8,640 square feet. 4 kathas equal 11,520 square feet. 5 kathas, one bigha, equal 14,400 square feet. 10 kathas equal 28,800 square feet. Notice that an Assam katha is exactly four times a Bengal katha; a buyer who carries the Bengal value into Guwahati will underestimate every plot by seventy-five percent, and a buyer carrying the Assam value into Kolkata will overestimate fourfold. The word is the same; the land is not. This single fact justifies the entire verification discipline that we at Broker Network apply to every katha to square feet conversion on our platform.
The Universal Method for Katha to Square Feet Conversion
Across all regions, the safe method is identical, and it is the method Broker Network follows internally. Step 1: Identify the state and district of the property from the documents. Step 2: Establish the local katha value, 720 square feet in West Bengal, approximately 1,361.25 square feet as the Bihar convention subject to district verification, 2,880 square feet in Assam, by checking the deed, the khatiyan or porcha, and where available the recorded metric area, since many modern documents state the area in square meters or decimals alongside kathas. Step 3: Multiply the number of kathas by the verified local value to complete the katha to square feet conversion. Step 4: Cross-check against any metric figure in the record, converting square meters to square feet by multiplying by 10.7639. Step 5: For high-value purchases, commission a licensed amin or surveyor so the physical plot matches the paper figure.
Worked example: a Patna property is recorded as 3.5 kathas, and the khatiyan’s decimal entry confirms the district follows the 1,361.25 square feet convention. The conversion is 3.5 × 1,361.25 = 4,764.375 square feet, which is 529.4 square yards. The buyer now knows precisely what is on the table, and every later step, pricing, stamp duty, loan valuation, rests on that verified number.
Why Accurate Katha to Square Feet Conversion Protects Your Money
Consider what a conversion error costs in practice. Suppose land in a growing corridor near Kolkata trades at four thousand rupees per square foot. A 5 katha plot at the correct Bengal value is 3,600 square feet, worth about 1.44 crore rupees. A buyer who mistakenly applies the Bihar convention would believe the plot is 6,806 square feet and might accept a price near 2.7 crore rupees, overpaying by more than a crore for land that does not exist. The reverse error makes genuine sellers look dishonest and kills good deals.
Beyond pricing, the katha to square feet conversion drives stamp duty at registration, the bank valuer’s report, the buildable area under municipal rules, and the division of family property among heirs. An error at the conversion stage silently corrupts all of them. We at Broker Network treat the verified katha to square feet figure as the foundation stone of every eastern Indian transaction on our platform, because experience has taught us that nothing built on a wrong area survives contact with reality.
Common Mistakes in Katha to Square Feet Conversion and How to Avoid Them
Mistake one: carrying one state’s katha into another state, the 720 versus 1,361.25 versus 2,880 trap we have described. Mistake two: assuming the state default in Bihar without checking the district custom. Mistake three: confusing kathas with decimals; one decimal is 435.6 square feet, a completely different unit that appears in the very same Bihar and Bengal documents. Mistake four: ignoring the chatak or lecha component of the recorded area, which understates the land. Mistake five: rounding 1,361.25 to 1,300 or 1,400 in agreements. Mistake six: trusting anonymous online calculators that silently pick one convention. Mistake seven: skipping the physical survey on a high-value plot.
Each of these mistakes has a single cure: verification before calculation. That is precisely the order of operations built into Broker Network, where every listing’s katha to square feet conversion is anchored to the documents and the verified local convention, and displayed alongside square feet, square yards, square meters, and acres so that nothing is left to assumption.
Katha to Square Feet and the Wider Family of Eastern Units
To navigate eastern Indian land records confidently, place the katha inside its full family. In West Bengal: 16 chataks make a katha of 720 square feet, 20 kathas make a bigha of 14,400 square feet, and about 60.5 kathas make an acre. In the Bihar convention: 20 dhurs make a katha of about 1,361.25 square feet, 20 kathas make a bigha of about 27,225 square feet, and 32 kathas make an acre. In Assam: 20 lechas make a katha of 2,880 square feet, 5 kathas make a bigha of 14,400 square feet, and about 15.13 kathas make an acre. Across all systems, the decimal of 435.6 square feet and the acre of 43,560 square feet provide the common reference frame.
Mastering this map lets you read any khatiyan, porcha, or jamabandi and translate it instantly for a buyer, a bank, or a court. And on Broker Network, the map is already drawn: every eastern listing carries its verified katha figure with the complete set of standard equivalents, so the katha to square feet conversion and all its cousins are settled before the first site visit.
A Real-World Katha to Square Feet Walkthrough
Here is a complete example of the kind we at Broker Network see regularly. A family in Kolkata lists an inherited plot recorded as 4 kathas 8 chataks, and an NRI buyer asks for the area in square feet and square yards before making an offer of three crore rupees. Step one, convert the chataks: 8 ÷ 16 = 0.5, so the plot is 4.5 kathas. Step two, the katha to square feet conversion under the verified Bengal standard: 4.5 × 720 = 3,240 square feet. Step three, square yards: 3,240 ÷ 9 = 360 square yards. Step four, the price analysis: three crore rupees over 3,240 square feet is about 9,259 rupees per square foot, which the buyer compares against the locality benchmark of around 9,000 rupees per square foot and finds reasonable for a corner plot.
The offer proceeds, the documents are verified, and the deal closes without a single measurement dispute, because every party negotiated on the same verified numbers from day one. That is the quiet power of an accurate katha to square feet conversion, and delivering that power to every user is exactly what Broker Network was built for.
How BrokerNetwork Makes Katha to Square Feet Conversion Safe and Simple
So what exactly does Broker Network do for you here? First, regional intelligence: our verification process identifies the state and district convention governing your property’s katha before any arithmetic begins. Second, document discipline: areas are taken from deeds, khatiyans, and porchas, never from verbal claims. Third, exact computation: the verified local value, 720, 1,361.25, 2,880, or a documented district variant, is applied precisely, with chataks, dhurs, and lechas included. Fourth, transparency: every listing displays the katha figure beside its square feet, square yards, square meter, and acre equivalents. Fifth, complete support: Broker Network adds ownership verification, encumbrance checks, fair price discovery, surveyor connections, and registration assistance around the numbers.
A generic converter hands you a number computed from an assumption you cannot see; Broker Network hands you a number computed from your own documents and the verified custom of your own district. In a unit as regionally treacherous as the katha, that difference is the difference between confidence and gambling, and it is why we say with full conviction that Broker Network is the safest place in India to perform a katha to square feet conversion.
The Broker Network Quick Checklist for Every Katha to Square Feet Conversion
Before any katha to square feet figure enters your negotiation or agreement, run this checklist. One, is the property’s state and district identified from documents? Two, is the local katha value verified, not assumed, from the deed, revenue record, or any metric entry? Three, are chataks, dhurs, or lechas included as fractions of a katha? Four, is the multiplication done with the exact local value, without rounding? Five, does the result reconcile with any square meter or decimal figure in the record? Six, will the agreement state the area in kathas and square feet together, naming the convention used? Seven, on a high-value deal, is a licensed survey scheduled before final payment?
Seven yes answers mean your katha to square feet conversion is verified and safe to build a transaction upon. Any no is an instruction to pause. Users who follow this checklist tell us at Broker Network that the katha, once the most feared word in their property vocabulary, became just another number, and that is exactly the transformation we exist to deliver.
Katha to Square Feet in Pricing and Negotiation Strategy
Beyond documentation, the katha to square feet conversion is a genuine negotiating weapon in eastern markets. Local sellers quote lump sums per katha, while serious buyers and banks evaluate per square foot; the party who can flip between the two framings instantly controls the anchor of the negotiation. A plot offered at thirty lakh rupees per katha in Kolkata is, at the Bengal value of 720 square feet, a price of about 4,167 rupees per square foot, a figure that can be compared directly against neighbouring transactions, builder rates, and bank valuations in a way the per-katha number never allows.
The same translation exposes inflated asking prices, reveals genuine bargains, and lets a buyer present a counter-offer backed by per square foot evidence rather than sentiment. We at Broker Network train our community to normalise every eastern listing into square feet before comparing or countering, and our platform performs the katha to square feet conversion on every listing precisely so that this analytical edge is available to all our users by default, not just to seasoned professionals.
Frequently Asked Questions (FAQs)
1. How many square feet are there in one katha?
It depends on the region, and that is the most important fact about this unit. One katha equals 720 square feet in West Bengal, approximately 1,361.25 square feet under the common Bihar convention, and 2,880 square feet in Assam, with district-level variations possible, especially in Bihar. Broker Network verifies the applicable convention from your documents before performing any katha to square feet conversion.
2. What is the formula for katha to square feet conversion?
The katha to square feet formula is: Square Feet = Kathas × local katha value, where the local value is 720 for West Bengal, about 1,361.25 for the Bihar convention, and 2,880 for Assam. Include chataks, dhurs, or lechas as fractions of a katha first. We at Broker Network always cross-check the result against any metric figure recorded in the documents.
3. How many square feet is a 5 katha plot?
A 5 katha plot equals 3,600 square feet in West Bengal, about 6,806.25 square feet under the Bihar convention, and 14,400 square feet, one full bigha, in Assam. The same words describe radically different plots, which is why Broker Network confirms the regional convention before publishing any katha to square feet figure for a property.
4. Why does the katha value change from state to state?
Because the katha was historically defined as a fraction of the bigha, and the bigha itself was standardised differently by different regional administrations. West Bengal fixed a 14,400 square feet bigha of 20 kathas, Assam a 14,400 square feet bigha of 5 kathas, and Bihar a larger bigha yielding the 1,361.25 square feet katha. Broker Network’s verification process exists precisely to navigate this inherited diversity safely.
5. How does Broker Network help me verify a katha-denominated property?
Broker Network takes the area from your deed, khatiyan, or porcha, identifies the state and district convention, performs the exact katha to square feet conversion including sub-units, reconciles it with any metric entry in the record, and displays all equivalents transparently on the listing. We also support ownership verification, price discovery, and licensed surveys, so the plot you pay for is exactly the plot you receive.
Conclusion
The katha to square feet conversion is unique among Indian land calculations because the hardest step is not the multiplication; it is knowing which multiplication to perform. Remember the three anchors: 720 square feet per katha in West Bengal, approximately 1,361.25 in the Bihar convention, and 2,880 in Assam, always subject to verification from the actual documents and district custom. Verify the convention, include the sub-units, compute exactly, reconcile with metric records, and survey the land on major deals. Follow that discipline and the katha will never deceive you again.
And remember that the discipline already lives inside Broker Network. Verified conventions, document-anchored figures, every unit displayed together, and complete professional support from enquiry to registration: that is how Broker Network explains, and solves, the katha to square feet conversion for every user. Whether you are buying in Kolkata, selling in Patna, investing in Guwahati, or untangling an inherited record anywhere in the east, start with Broker Network, transact on verified numbers, and close with complete confidence. Close more, together, with Broker Network.
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