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Acre to Bigha in Bihar: Converter Table (2026)
A conditional acre to bigha table for Bihar built on the commonly quoted 27,220 sq ft bigha, clearly flagged as not yet verified, with fixed acre, square yard, hectare and decimal columns, the formula, worked examples and the steps to find your village's real bigha.
An acre is 4,840 square yards everywhere. A bigha (बीघा) in Bihar is commonly quoted at 27,220 sq ft, but Farmland India has not verified that figure on an official source. This page gives the fixed conversions, a bigha table that is openly conditional on the quoted figure, and the lookup steps to find the bigha your jamabandi panji / khatiyan actually implies.
Read this first: the figure is not verified
Rates not yet verified
Rates not yet verified by Farmland India: confirm on Bihar Bhumi (biharbhumi.bihar.gov.in), the Revenue and Land Reforms Department portal before relying on them. The figures on this page for this state are commonly quoted trade figures, not values we read on an official revenue page. Use the lookup steps below to find the definition that applies to your village before you price land.
Our own published research, including Dhur, kattha and dismil in Bihar and eastern UP, does not give a Bihar bigha (बीघा) size, because no revenue department page, Act or gazette we could open fixes one. Trade and converter sites commonly quote 27,220 sq ft per bigha for Bihar. This page uses that commonly quoted figure only as a labelled assumption so that you can test a seller's bigha count against it. Every bigha figure below carries the condition "if 1 bigha = 27,220 sq ft". The acre, square yard, square foot and hectare figures are fixed and need no condition.
Some trade sources round the Bihar bigha to 27,225 sq ft (3,025 sq yd), the same as the Rajasthan pucca bigha; others give 27,220 sq ft. The difference is 5 sq ft per bigha and does not change any figure in the table at two decimals. Other sources give district figures that are smaller, especially in north Bihar, which is why this page treats the figure as unverified.
Acre to bigha table for Bihar (conditional)
Read the first four columns as fact. Read the bigha and kattha columns as "what the count would be if the commonly quoted figure applies to your village". The last column, decimal, is the fixed unit that lets you cross-check any local quote.
| Acre | Sq ft | Sq yd (gaj) | Hectare | Bigha IF 1 bigha = 27,220 sq ft (unverified) | Kattha IF 20 per bigha (unverified) | Decimal (fixed) |
|---|---|---|---|---|---|---|
| 1 | 43,560 | 4,840 | 0.405 | 1.6 | 32 | 100 |
| 2 | 87,120 | 9,680 | 0.809 | 3.2 | 64 | 200 |
| 3 | 130,680 | 14,520 | 1.214 | 4.8 | 96 | 300 |
| 4 | 174,240 | 19,360 | 1.619 | 6.4 | 128 | 400 |
| 5 | 217,800 | 24,200 | 2.023 | 8 | 160 | 500 |
| 6 | 261,360 | 29,040 | 2.428 | 9.6 | 192 | 600 |
| 7 | 304,920 | 33,880 | 2.833 | 11.2 | 224 | 700 |
| 8 | 348,480 | 38,720 | 3.237 | 12.8 | 256 | 800 |
| 9 | 392,040 | 43,560 | 3.642 | 14.4 | 288.1 | 900 |
| 10 | 435,600 | 48,400 | 4.047 | 16 | 320.1 | 1,000 |
| 11 | 479,160 | 53,240 | 4.452 | 17.6 | 352.1 | 1,100 |
| 12 | 522,720 | 58,080 | 4.856 | 19.2 | 384.1 | 1,200 |
| 13 | 566,280 | 62,920 | 5.261 | 20.8 | 416.1 | 1,300 |
| 14 | 609,840 | 67,760 | 5.666 | 22.4 | 448.1 | 1,400 |
| 15 | 653,400 | 72,600 | 6.07 | 24 | 480.1 | 1,500 |
| 16 | 696,960 | 77,440 | 6.475 | 25.6 | 512.1 | 1,600 |
| 17 | 740,520 | 82,280 | 6.88 | 27.2 | 544.1 | 1,700 |
| 18 | 784,080 | 87,120 | 7.284 | 28.81 | 576.1 | 1,800 |
| 19 | 827,640 | 91,960 | 7.689 | 30.41 | 608.1 | 1,900 |
| 20 | 871,200 | 96,800 | 8.094 | 32.01 | 640.1 | 2,000 |
| 25 | 1,089,000 | 121,000 | 10.117 | 40.01 | 800.1 | 2,500 |
| 30 | 1,306,800 | 145,200 | 12.141 | 48.01 | 960.2 | 3,000 |
| 40 | 1,742,400 | 193,600 | 16.187 | 64.01 | 1,280.2 | 4,000 |
| 50 | 2,178,000 | 242,000 | 20.234 | 80.01 | 1,600.3 | 5,000 |
| 60 | 2,613,600 | 290,400 | 24.281 | 96.02 | 1,920.4 | 6,000 |
| 75 | 3,267,000 | 363,000 | 30.351 | 120.02 | 2,400.4 | 7,500 |
| 100 | 4,356,000 | 484,000 | 40.469 | 160.03 | 3,200.6 | 10,000 |
Bigha = acres × 4,840 ÷ 3,024.444 sq yd, which is acres × 1.6003. Kattha = bigha × 20. Decimal = acres × 100. Hectares use 1 acre = 0.404686 hectare.
Units and their status
| Unit | Sq ft | Sq yd | Sq m | Acre | Hectare | Status |
|---|---|---|---|---|---|---|
| 1 acre (fixed) | 43,560 | 4,840 | 4,046.9 | 1 | 0.404686 | Fixed by definition |
| 1 decimal (one hundredth of an acre, 435.6 sq ft, 48.4 sq yd) | 435.6 | 48.4 | 40.5 | 0.01 | 0.00405 | Fixed |
| 1 Bihar bigha, commonly quoted | 27,220 | 3,024.44 | 2,528.8 | 0.6249 | 0.25288 | NOT VERIFIED by Farmland India |
| 1 kattha (कट्ठा), if 20 per parent unit | 1,361 | 151.222 | 126.44 | 0.031244 | 0.012644 | NOT VERIFIED (ratio is a common local convention) |
| 1 dhur (धुर), if 20 per parent unit | 68.05 | 7.561 | 6.32 | 0.001562 | 0.000632 | NOT VERIFIED (ratio is a common local convention) |
The status column is the most important column on this page. A unit marked fixed can be used in a contract without further proof. A unit marked not verified must be defined in writing by the seller and confirmed by the revenue office before it appears in any document you sign. For the general principles see land measurement units in India.
Formula and lookup method
- Square yards = Acre × 4,840; Square feet = Acre × 43,560; Hectare = Acre × 0.404686
- Bigha (conditional) = Square yards ÷ (square yards per local bigha). With the commonly quoted figure, Bigha = Acre × 1.6003
- Kattha = Bigha × 20, if the 20-per-bigha convention holds in your village
- To go back: Acre = Bigha × (square yards per local bigha) ÷ 4,840
Because the local bigha is unverified, the real tool on this page is the lookup method. Use these steps to find the definition that applies to your plot:
- Open Bihar Bhumi (biharbhumi.bihar.gov.in), the Revenue and Land Reforms Department portal and pull the jamabandi panji / khatiyan for the khasra or survey number.
- Read the area column and note the unit. Where it is hectare, are or square metre, that figure is the legal area and is fixed.
- Ask the seller for the bigha count and the square feet per bigha they are using, in writing.
- Divide the record's area in square yards by the seller's bigha count. The result is the bigha that seller means. Compare it with 27,220 sq ft and with the table above.
- Ask the circle officer, patwari or revenue inspector for the village's bigha and kattha definition, and keep the answer with your file.
- Write the price per square yard, per decimal or per hectare in the agreement. Let the bigha appear only as a description.
Never sign on a bigha count alone
In Bihar the bigha is a trade unit, not the unit the record is kept in. A sale deed that recites hectares or square metres from the record, with the bigha count as a description, protects you if the two later disagree.
Three worked examples
All three examples use the commonly quoted 27,220 sq ft bigha and are illustrative. Replace the bigha size with the one your record or revenue office gives you.
Example 1: 3 acres. 3 × 4,840 = 14,520 sq yd = 130,680 sq ft = 1.214 hectare (all fixed). If 1 bigha = 27,220 sq ft (3,024.444 sq yd), that is 14,520 ÷ 3,024.444 = 4.8 bigha, or about 96 kattha. In decimal the plot is 300 decimal, which needs no condition.
Example 2: a seller quotes 10 bigha at Rs 15 lakh per bigha. If the bigha is 27,220 sq ft, the plot is 272,200 sq ft = 30,244.4 sq yd = 6.249 acre, and Rs 1.5 crore works out to Rs 24 lakh per acre. If the village bigha is actually 10 per cent smaller, the same Rs 1.5 crore buys 5.624 acre and the rate per acre rises to Rs 26.7 lakh. The record's hectare figure settles which is true.
Example 3: a record showing 1.2500 hectare. 1.25 × 2.47105 = 3.0888 acre = 14,949.9 sq yd (fixed). If the seller says this is 5 bigha, the implied bigha is 2,990 sq yd, close to the commonly quoted 3,024.4 sq yd, so the quote is consistent. If the seller says it is 7 bigha, the implied bigha is 2,135.7 sq yd, and you need to know why.
Bigha to acre (reverse table)
Conditional on 1 bigha = 27,220 sq ft. Scale every row if your village bigha differs.
| Bigha (IF 27,220 sq ft) | Sq ft | Sq yd | Acre | Hectare |
|---|---|---|---|---|
| 1 | 27,220 | 3,024.4 | 0.6249 | 0.2529 |
| 2 | 54,440 | 6,048.9 | 1.2498 | 0.5058 |
| 3 | 81,660 | 9,073.3 | 1.8747 | 0.7586 |
| 4 | 108,880 | 12,097.8 | 2.4995 | 1.0115 |
| 5 | 136,100 | 15,122.2 | 3.1244 | 1.2644 |
| 8 | 217,760 | 24,195.6 | 4.9991 | 2.0231 |
| 10 | 272,200 | 30,244.4 | 6.2489 | 2.5288 |
| 15 | 408,300 | 45,366.7 | 9.3733 | 3.7932 |
| 20 | 544,400 | 60,488.9 | 12.4977 | 5.0576 |
| 25 | 680,500 | 75,611.1 | 15.6221 | 6.3221 |
| 50 | 1,361,000 | 151,222.2 | 31.2443 | 12.6441 |
| 100 | 2,722,000 | 302,444.4 | 62.4885 | 25.2882 |
For other states see the general bigha to acre converter and acre to bigha converter.
District comparison
We could not confirm district-level bigha sizes for Bihar from an official source. The table below records only what a buyer is likely to hear, so that an unexpected figure prompts a question rather than a signature.
| Area | What you are likely to hear |
|---|---|
| Patna, Gaya, Nalanda and south Bihar | Bigha of about 20 kattha, commonly quoted near 27,220 sq ft |
| Muzaffarpur, Darbhanga, Sitamarhi and north Bihar | Kattha and bigha figures vary; several converter sites quote smaller kattha for these districts |
| Every district | Decimal (dismil) is one hundredth of an acre and does not vary |
How to use this with your jamabandi panji / khatiyan
- Pull the jamabandi panji / khatiyan from Bihar Bhumi (biharbhumi.bihar.gov.in).
- Read the area unit. Convert hectare to square yards (× 11,959.9) and acres (× 2.47105); convert square metres to square yards (÷ 0.836127).
- Find the acreage in the table above and read the fixed columns. Compare the conditional bigha column with the seller's count.
- If the counts differ, compute the seller's implied bigha as described in the method, and get the village definition from the revenue office in writing.
- Check the map and have the plot measured on site before the main payment. See how to verify land title, the land due diligence checklist and state-wise agricultural land purchase rules.
What this page does not confirm
We did not open any Bihar revenue department page, Act or gazette that fixes the size of a bigha or its sub-units, and our own live research pages say the same. The 27,220 sq ft figure is a commonly quoted trade figure and is labelled as unverified wherever it appears. The 20-per-bigha division of the kattha is a common local convention, not a rule we read in an official text. The fixed columns (acre, square yard, square foot, hectare, decimal) are the only figures on this page that can be relied on without further checks. This page will be updated if an official Bihar definition is located. For the all-state picture see our bigha size by state comparison table.
