How many decare are in 1 katha?

It depends on the state, because the katha is not a fixed size. In Bihar, 1 katha = 0.1264643 decare. Across the states listed, the answer ranges from 0.03344509 to 0.2675608 decare — choose your state in the converter above for an accurate result.

Why does the katha vary by state?

The katha is a traditional unit recorded differently in each state's revenue system, and many states use a larger "pucca" and a smaller "kachha" version. There is no single national value, so the only correct conversion is the one for your specific state or district.

How do I convert katha to decare?

Pick your state above so the tool uses that state's katha value, then type the amount. For example, in Bihar, multiply katha by 0.1264643 to get decare.

Which states is the katha used in?

This converter covers: Bihar; West Bengal (rural); West Bengal (Kolkata); Assam (1 bigha = 5 katha); Jharkhand (Ranchi); Madhya Pradesh. For legal or property transactions, always confirm the local value against your revenue records (patwari / tehsil).

Convert Katha to Decare

The katha is not a fixed size — it varies by state. Across the states below, 1 katha = 0.03344509–0.2675608 decare. Pick your state for an accurate result; it runs entirely in your browser.

1 Katha = 0.1264643 Decare (Bihar)

Katha value — choose your state / region

Katha (katha)

Decare (daa)

⇅ Reverse (Decare → Katha)

Katha to Decare by state

Because the katha differs from state to state, the table below gives the value in each state we cover. The square-foot column is the standard defining value; the metre and conversion columns are computed from it.

State / region	1 Katha (sq ft)	1 Katha (m²)	1 Katha → Decare	1 Decare → Katha
Bihar	1,361.25	126.4643	0.1264643 daa	7.907372 katha
West Bengal (rural)	720	66.89019	0.06689019 daa	14.94988 katha
West Bengal (Kolkata)	360	33.44509	0.03344509 daa	29.89975 katha
Assam (1 bigha = 5 katha)	2,880	267.5608	0.2675608 daa	3.737469 katha
Jharkhand (Ranchi)	720	66.89019	0.06689019 daa	14.94988 katha
Madhya Pradesh	600	55.74182	0.05574182 daa	17.93985 katha

Indian land units vary by state and even by district, and local custom can differ from the standard value. For any legal, property or financial purpose, confirm the value against your local revenue records (patwari / tehsil) before relying on it.

About katha and decare

Katha: A katha (also spelt kattha) is the common land unit across eastern India. In most states 1 bigha = 20 katha, but in Assam 1 bigha = 5 katha, so the katha’s size varies widely by state.

Decare: A decare is 1,000 square metres (10 ares, one-tenth of a hectare) — a metric land unit used in Norway, Turkey and the Balkans, and close to the Middle-Eastern dunam.

Frequently asked questions

How many decare are in 1 katha?: It depends on the state, because the katha is not a fixed size. In Bihar, 1 katha = 0.1264643 decare. Across the states listed, the answer ranges from 0.03344509 to 0.2675608 decare — choose your state in the converter above for an accurate result.
Why does the katha vary by state?: The katha is a traditional unit recorded differently in each state's revenue system, and many states use a larger "pucca" and a smaller "kachha" version. There is no single national value, so the only correct conversion is the one for your specific state or district.
How do I convert katha to decare?: Pick your state above so the tool uses that state's katha value, then type the amount. For example, in Bihar, multiply katha by 0.1264643 to get decare.
Which states is the katha used in?: This converter covers: Bihar; West Bengal (rural); West Bengal (Kolkata); Assam (1 bigha = 5 katha); Jharkhand (Ranchi); Madhya Pradesh. For legal or property transactions, always confirm the local value against your revenue records (patwari / tehsil).

Related area conversions

See all area unit conversions →

Full state-by-state size reference (bigha, biswa, katha, dhur) →

Sources

Per-state values are cross-checked against multiple references, including Wikipedia: Bigha, Wikipedia: Katha, Wikipedia: Measurement of land in Punjab and state land-record references. Where sources genuinely disagree we show the documented variants rather than a single figure.