Convert Hectare to Bigha (Kachha, North India)
Convert hectares to bighas instantly. 1 hectare = 9.9173881567 bigha (kachha, north india) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Bigha (Kachha, North India) 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.
Bigha (Kachha, North India)
A kachha (smaller) bigha is a traditional unit of land area used in North India, equal to approximately 1008 m² (about 0.25 acre). Used alongside the pucca bigha in Uttar Pradesh and Bihar.
The 'kachha' (raw or smaller) bigha is exactly one-third the size of the pucca bigha. Both units coexist in regional usage.
Kachha bighas appear in informal property descriptions and traditional land records in Uttar Pradesh and Bihar. Modern legal documents typically use hectares or pucca bighas with explicit conversion.
Traditional unit; relationship to pucca bigha standardized as 1:3.
Hectare to Bigha (Kachha, North India) conversion formula
The relationship between hectares and bighas:
To convert hectares to bighas, multiply the value in hectares by 9.9173881567. To reverse, multiply bighas by 0.100833.
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 (Kachha, North India) to Hectare converter for the reverse direction.
Step-by-step: convert hectares to bighas
- Write down the value in hectares (ha).
- Multiply that value by the factor 9.9173881567.
- The product is the equivalent value in bighas (bigha).
- To reverse, multiply the bigha (kachha, north india) value by 0.100833.
Worked examples
Example 1 — Convert 1 ha to bigha:
1 × 9.9173881567 = 9.9173881567 bigha
Example 2 — Convert 100 ha to bigha:
100 × 9.9173881567 = 991.7388156655 bigha
Real-world example — Road-sign distances across systems
A 100-hectare road sign converts cleanly into bighas — exactly the conversion drivers planning trips abroad rely on when reading road signs in a different measurement system.
100 ha × 9.9173881567 = 991.7388156655 bigha
Real-world example — Endurance race distances
A 50-hectare cycling or running race converts to a recognizable distance in bighas. Endurance athletes coming from a different measurement system use this conversion to compare training plans across regions.
50 ha × 9.9173881567 = 495.8694078328 bigha
Real-world example — Maritime exclusion zone
A 200-hectare exclusion zone (a common maritime boundary) converts to a different value in bighas that's useful when describing the same zone in everyday land-distance units.
200 ha × 9.9173881567 = 1983.477631331 bigha
Hectare to Bigha (Kachha, North India) conversion table
Standard reference values for converting hectares to bighas:
| Hectare [ha] | Bigha (Kachha, North India) [bigha] |
|---|---|
| 0.01 | 0.0991738816 |
| 0.1 | 0.9917388157 |
| 1 | 9.9173881567 |
| 2 | 19.8347763133 |
| 3 | 29.75216447 |
| 4 | 39.6695526266 |
| 5 | 49.5869407833 |
| 10 | 99.1738815666 |
| 20 | 198.3477631331 |
| 30 | 297.5216446997 |
| 40 | 396.6955262662 |
| 50 | 495.8694078328 |
| 100 | 991.7388156655 |
| 500 | 4958.6940783275 |
| 1000 | 9917.3881566551 |
Frequently asked questions
How many bighas is 1 hectare?
How do I convert hectares to bighas?
How do I convert bighas back to hectares?
How many bighas is 100 hectares?
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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 = 9.9173881567 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.