Convert Katha (Bengal) to Bigha (Assam)
Convert kathas to bighas instantly. 1 katha (bengal) = 0.05 bigha (assam) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Bigha (Assam) to Katha (Bengal) converter for the reverse conversion.
Units explained
Katha (Bengal)
A Bengal katha is a traditional unit of land area equal to approximately 66.89 m² (1/20 of a Bengal bigha or 720 square feet). Used in West Bengal and Bangladesh.
Defined as 1/20 of the Bengal bigha during colonial standardization.
Bengal kathas are widely used in residential property descriptions in Kolkata, Dhaka, and other Bengali-speaking regions. Property advertisements often list area in kathas with chatak (1/16 katha) subdivisions.
Standardized in colonial Bengal.
Bigha (Assam)
An Assam bigha is a traditional unit of land area used in Assam and parts of Northeast India, equal to approximately 1337.8 m² (functionally identical to the Bengal bigha).
Derived from the same colonial Bengali standardization that produced the Bengal bigha. Assam land records share much of Bengal's traditional unit system.
Assam bighas are used in property transactions and agricultural records across Assam and several other Northeast states. The unit equals 14,400 sq ft.
Standardized in colonial Bengal/Northeast India administration.
Katha (Bengal) to Bigha (Assam) conversion formula
The relationship between kathas and bighas:
To convert kathas to bighas, multiply the value in kathas by 0.05. To reverse, multiply bighas by 20.
How to use this converter
Type a value into the calculator. The result in bighas updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Bigha (Assam) to Katha (Bengal) converter for the reverse direction.
Step-by-step: convert kathas to bighas
- Write down the value in kathas (katha).
- Multiply that value by the factor 0.05.
- The product is the equivalent value in bighas (bigha).
- To reverse, multiply the bigha (assam) value by 20.
Worked examples
Example 1 — Convert 1 katha to bigha:
1 × 0.05 = 0.05 bigha
Example 2 — Convert 100 katha to bigha:
100 × 0.05 = 5 bigha
Katha (Bengal) to Bigha (Assam) conversion table
Standard reference values for converting kathas to bighas:
| Katha (Bengal) [katha] | Bigha (Assam) [bigha] |
|---|---|
| 0.01 | 0.0005 |
| 0.1 | 0.005 |
| 1 | 0.05 |
| 2 | 0.1 |
| 3 | 0.15 |
| 4 | 0.2 |
| 5 | 0.25 |
| 10 | 0.5 |
| 20 | 1 |
| 30 | 1.5 |
| 40 | 2 |
| 50 | 2.5 |
| 100 | 5 |
| 500 | 25 |
| 1000 | 50 |
Frequently asked questions
How many bighas is 1 katha (bengal)?
How do I convert kathas to bighas?
How do I convert bighas back to kathas?
How many bighas is 100 kathas?
Popular area unit conversions
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Metric / SI (5 units)
Imperial / US Customary (3 units)
Indian Subcontinent (15 units)
Sources & references
Conversion factor (1 katha = 0.05 bigha) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.