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Kattha to sq ft converter for Patna

Type in any box: kattha, dhur, sq ft or any other unit. Every other box changes at once.

Rates checked: 18 October 2026

Kattha, dhur and sq ft

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Patna land units at a glance

UnitSq ftOther units
1 dhur68.061/20 kattha
1 kattha1,361.2520 dhur = 3.125 decimal
1 decimal (dismil)435.61/100 acre = 6.4 dhur
1 bigha27,22520 kattha = 62.5 decimal
1 acre43,560100 decimal = 1.6 bigha = 32 kattha
1 gaj (sq yard)9

Before you rely on the number

  • These are the values generally used in Patna. Older deeds and some other districts of Bihar can use a different kattha or bigha, so read the area exactly as written in your khatiyan, jamabandi and deed.
  • Government records (Bhu-Naksha, jamabandi) usually show area in decimal or acre; a seller usually quotes kattha and dhur. Convert both to sq ft and check that they match.
  • If the plot on the ground looks smaller than the papers, get it measured by an amin before you pay a token.

Common questions

How many sq ft is 1 kattha in Patna?

In Patna, 1 kattha is generally taken as 1,361.25 sq ft. That is 20 dhur or 3.125 decimal.

How many dhur make 1 kattha?

20 dhur make 1 kattha. 1 dhur is about 68.06 sq ft.

How many kattha are in 1 decimal (dismil)?

1 decimal is 0.32 kattha, or 6.4 dhur. 1 decimal = 435.6 sq ft, one-hundredth of an acre.

How many kattha are in 1 bigha in Bihar?

In Patna, 1 bigha = 20 kattha = 27,225 sq ft = 62.5 decimal. Some other parts of Bihar use a different bigha, so go by the area written in your papers.

How many kattha are in 1 acre?

1 acre = 43,560 sq ft = 32 kattha = 100 decimal = 1.6 bigha, using Patna values.

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