How many katha are in 1 decimal?

It depends on the state, because the katha is not a fixed size. In Bihar, 1 decimal = 0.32 katha. Across the states listed, the answer ranges from 0.15125 to 1.21 katha — 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 decimal to katha?

Pick your state above so the tool uses that state's katha value, then type the amount. For example, in Bihar, multiply decimal by 0.32 to get katha.

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 Decimal to Katha

The katha is not a fixed size — it varies by state. Across the states below, 1 decimal = 0.15125–1.21 katha. Pick your state for an accurate result; it runs entirely in your browser.

1 Decimal = 0.32 Katha (Bihar)

Katha value — choose your state / region

Decimal (decimal)

Katha (katha)

⇅ Reverse (Katha → Decimal)

Decimal to Katha 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 Decimal → Katha	1 Katha → Decimal
Bihar	1,361.25	126.4643	0.32 katha	3.125 decimal
West Bengal (rural)	720	66.89019	0.605 katha	1.652893 decimal
West Bengal (Kolkata)	360	33.44509	1.21 katha	0.8264463 decimal
Assam (1 bigha = 5 katha)	2,880	267.5608	0.15125 katha	6.61157 decimal
Jharkhand (Ranchi)	720	66.89019	0.605 katha	1.652893 decimal
Madhya Pradesh	600	55.74182	0.726 katha	1.37741 decimal

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 decimal and katha

Decimal: A decimal is 1/100 of an acre (48.4 gaj) — widely used in eastern India (Bihar, Bengal, Odisha, Jharkhand).

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.

Frequently asked questions

How many katha are in 1 decimal?: It depends on the state, because the katha is not a fixed size. In Bihar, 1 decimal = 0.32 katha. Across the states listed, the answer ranges from 0.15125 to 1.21 katha — 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 decimal to katha?: Pick your state above so the tool uses that state's katha value, then type the amount. For example, in Bihar, multiply decimal by 0.32 to get katha.
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.