Convert Gaj to Katha
The katha is not a fixed size — it varies by state. Across the states below, 1 gaj = 0.003125–0.025 katha. Pick your state for an accurate result; it runs entirely in your browser.
Gaj 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 Gaj → Katha | 1 Katha → Gaj |
|---|---|---|---|---|
| Bihar | 1,361.25 | 126.4643 | 0.00661157 katha | 151.25 gaj |
| West Bengal (rural) | 720 | 66.89019 | 0.0125 katha | 80 gaj |
| West Bengal (Kolkata) | 360 | 33.44509 | 0.025 katha | 40 gaj |
| Assam (1 bigha = 5 katha) | 2,880 | 267.5608 | 0.003125 katha | 320 gaj |
| Jharkhand (Ranchi) | 720 | 66.89019 | 0.0125 katha | 80 gaj |
| Madhya Pradesh | 600 | 55.74182 | 0.015 katha | 66.66667 gaj |
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 gaj and katha
Gaj: A gaj is a square yard (9 sq ft) — the everyday unit for plots and houses across North India.
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 gaj?
- It depends on the state, because the katha is not a fixed size. In Bihar, 1 gaj = 0.00661157 katha. Across the states listed, the answer ranges from 0.003125 to 0.025 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 gaj to katha?
- Pick your state above so the tool uses that state's katha value, then type the amount. For example, in Bihar, multiply gaj by 0.00661157 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).
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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.