Convert Hectare to Katha (Bengal)
Convert hectares to kathas instantly. 1 hectare = 149.4991777545 katha (bengal) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Katha (Bengal) to Hectare converter for the reverse conversion.
Units explained
Hectare
A hectare is a metric unit of area equal to 10,000 square meters, or one square hectometer. It is the most widely used metric unit for land measurement worldwide.
Defined as 100 ares, equal to one square hectometer. The name was introduced in 1795 in France as part of the metric system.
Hectares are the standard unit for agricultural land measurement worldwide except in the US (which uses acres). 1 hectare equals 2.47105 acres. In India, hectares are used in modern agricultural census and land records alongside traditional regional units.
Adopted in France in 1795; standardized internationally through the SI system.
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.
Hectare to Katha (Bengal) conversion formula
The relationship between hectares and kathas:
To convert hectares to kathas, multiply the value in hectares by 149.4991777545. To reverse, multiply kathas by 0.006689.
How to use this converter
Type a value into the calculator. The result in kathas updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Katha (Bengal) to Hectare converter for the reverse direction.
Step-by-step: convert hectares to kathas
- Write down the value in hectares (ha).
- Multiply that value by the factor 149.4991777545.
- The product is the equivalent value in kathas (katha).
- To reverse, multiply the katha (bengal) value by 0.006689.
Worked examples
Example 1 — Convert 1 ha to katha:
1 × 149.4991777545 = 149.4991777545 katha
Example 2 — Convert 100 ha to katha:
100 × 149.4991777545 = 14949.9177754522 katha
Real-world example — Road-sign distances across systems
A 100-hectare road sign converts cleanly into kathas — exactly the conversion drivers planning trips abroad rely on when reading road signs in a different measurement system.
100 ha × 149.4991777545 = 14949.9177754522 katha
Real-world example — Endurance race distances
A 50-hectare cycling or running race converts to a recognizable distance in kathas. Endurance athletes coming from a different measurement system use this conversion to compare training plans across regions.
50 ha × 149.4991777545 = 7474.9588877261 katha
Real-world example — Maritime exclusion zone
A 200-hectare exclusion zone (a common maritime boundary) converts to a different value in kathas that's useful when describing the same zone in everyday land-distance units.
200 ha × 149.4991777545 = 29899.8355509045 katha
Hectare to Katha (Bengal) conversion table
Standard reference values for converting hectares to kathas:
| Hectare [ha] | Katha (Bengal) [katha] |
|---|---|
| 0.01 | 1.4949917775 |
| 0.1 | 14.9499177755 |
| 1 | 149.4991777545 |
| 2 | 298.998355509 |
| 3 | 448.4975332636 |
| 4 | 597.9967110181 |
| 5 | 747.4958887726 |
| 10 | 1494.9917775452 |
| 20 | 2989.9835550904 |
| 30 | 4484.9753326357 |
| 40 | 5979.9671101809 |
| 50 | 7474.9588877261 |
| 100 | 14949.9177754522 |
| 500 | 74749.5888772612 |
| 1000 | 149499.1777545224 |
Frequently asked questions
How many kathas is 1 hectare?
How do I convert hectares to kathas?
How do I convert kathas back to hectares?
How many kathas is 100 hectares?
Popular area unit conversions
Convert Hectare to other area units
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Metric / SI (15 units)
Imperial / US Customary (15 units)
US Survey (5 units)
Indian Subcontinent (16 units)
Other Regional (10 units)
Scientific / Physics (5 units)
Historical / Pre-metric European (6 units)
Sources & references
Conversion factor (1 ha = 149.4991777545 katha) 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.