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Each calculator is tuned to the units actually used in that state, with district-level Haath adjustment for Bihar.
Convert Cent, Guntha, Ankanam and standard units used across Andhra Pradesh land records.
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Calculate NowConvert Dhur, Dhurki, Kattha and Bigha with district-level Laggi-Haath presets for accurate Bihar measurements.
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Calculate NowConvert Dhur, Kattha and Bigha — Jharkhand's traditional land units, similar to Bihar measurements.
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Calculate NowConvert Pucca Bigha, Kuchcha Bigha and Biswa as used across Rajasthan revenue records.
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Calculate NowConvert Chatak, Kattha, Bigha and Decimal — West Bengal's land units used across revenue records.
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Bigha, Marla, Kattha, Cent, Guntha, Ground, Nali and more.
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Land units in India are not standardised across the country. The same name often refers to different sizes - for example:
That is why each state needs its own calculator with the right unit definitions baked in. Universal units (Square Feet, Square Meter, Acre, Hectare) are included everywhere so you can always cross-check.
The Bihar land calculator on this page is built for Bihar's district-specific measurement system. Bihar uses three primary local units - Dhur, Kattha and Bigha - which are tied to the Laggi-Haath value of each district. Unlike a generic converter, this calculator requires you to select your district first, which automatically sets the correct Haath value and gives you accurate results for your specific location.
The calculation is based on this formula: 1 Dhur equals (Laggi-Haath x 1.5) squared in square feet. From Dhur, everything else follows - 20 Dhur makes 1 Kattha, and 20 Kattha makes 1 Bigha (400 Dhur total per Bigha). The Dhurki is 1/20 of a Dhur. These ratios stay the same across all Bihar districts - only the square foot value changes with the Haath.
Bihar's 38 districts are grouped into three Haath categories for land measurement. Districts in the Patna and Shahabad region - Patna, Bhojpur, Buxar, Rohtas and Kaimur - use 5.75 Haath, which gives a Dhur of 74.39 sq ft and a Bigha of 29,756 sq ft. Central and Mithila region districts including Gaya, Muzaffarpur, Darbhanga, Vaishali, Nalanda, Bhagalpur, Munger, Jehanabad, Nawada, Aurangabad, Arwal and Begusarai use 5.5 Haath, giving a Dhur of 68.06 sq ft and a Bigha of 27,224 sq ft.
The remaining 23 districts - including Gopalganj, Siwan, Samastipur, Madhepura, Madhubani, Sitamarhi, Supaul, Purnia, Katihar, Saharsa, Kishanganj, Araria, Khagaria, Banka, Jamui, Sheikhpura, Sheohar, Lakhisarai, East Champaran, West Champaran and Saran - use 5.0 Haath, giving a Dhur of 56.25 sq ft and a Bigha of 22,500 sq ft.
Decimal and Acre are national standard units that remain constant regardless of district. One Decimal equals 435.6 sq ft and 100 Decimal equals 1 Acre (43,560 sq ft). In Patna district at 5.75 Haath, 1 Bigha equals 29,756 sq ft or approximately 68.27 Decimal or 0.683 Acre. In Gaya or Muzaffarpur at 5.5 Haath, 1 Bigha equals 27,224 sq ft or 62.5 Decimal or 0.625 Acre. In Gopalganj or Siwan at 5.0 Haath, 1 Bigha equals 22,500 sq ft or 51.65 Decimal or 0.517 Acre.
These differences matter significantly in property registration, inheritance division and revenue court proceedings. Always verify the Haath value for your district before using any land measurement in a legal document.
Outside the metric system, India has no single national land-unit standard. Every state codifies its own traditional units in revenue law, and one name can mean completely different areas in different places. A Marla in Punjab (272.25 sq ft) is not the Marla used in Haryana. The Cent in Tamil Nadu (435.6 sq ft) is nothing like the Guntha in Maharashtra (1,089 sq ft). Assam's Bigha (14,400 sq ft) matches West Bengal's, yet differs from Uttar Pradesh's Pucca Bigha (27,225 sq ft).
Land Calculator AI gives every Indian state its own dedicated, state-calibrated converter. Each state page shows only the units that actually appear in that state's official land records — Revenue Khatauni, Jamabandi, sale deeds and mutation orders. Pick any state from the grid above to open its calculator. Every tool is free, runs instantly in your browser and needs no registration.
