Free property tools for Patna and Bihar

Made for ordinary buyers: Patna land units and the 2026 Bihar registry rates, in English and Hindi. No sign-up, nothing to download.

Rates checked: 18 October 2026

Kattha to sq ft converter

Kattha, dhur, decimal (dismil), bigha, acre, gaj, sq ft, sq m and hectare: type one, see all. Patna values: 1 kattha = 1,361.25 sq ft = 20 dhur.

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Bihar registry charges calculator

Stamp duty, registration fee and scanning fee for a sale deed, at the rates in force since 18 June 2026. Checks deal price against MVR and covers sales to women.

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Why we made these

Sellers quote kattha and dhur, government records show decimal and acre, builders quote sq ft. Buyers lose money in the gap.
Registry cost went up in June 2026 (7% stamp duty and a higher MVR). Many people still plan with the old 6% + 2%.
Every number here is checked against Bihar Gazette notifications and the same fact-checked figures as our articles.

Want Prem ji to check the papers before you pay?

Send the khatiyan, jamabandi or the draft deed on WhatsApp. The first advice is free.

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