Convert Guntha to Katha (Bihar)
Convert gunthas to kathas instantly. 1 guntha = 0.8001502689 katha (bihar) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Katha (Bihar) to Guntha converter for the reverse conversion.
Units explained
Guntha
A guntha is a unit of land area used in Maharashtra, Karnataka, and parts of Andhra Pradesh, equal to approximately 101.171 m² (1/40 acre or 121 square yards).
Defined as 1/40 of an acre during British colonial administration in the Bombay Presidency and adjacent regions.
Gunthas are the standard unit for residential plots in Maharashtra (Pune, Mumbai suburbs), parts of Karnataka, and Telangana. 1 acre = 40 gunthas; the conversion is widely memorized in regional real estate.
Standardized in colonial Bombay Presidency.
Katha (Bihar)
A Bihar katha is a traditional unit of land area equal to approximately 126.44 m² (1/20 of a pucca bigha in Bihar).
Defined as 1/20 of the Bihar pucca bigha. Like other regional kathas, the actual size varies with the local bigha.
Bihar kathas appear in land records and property transactions across Bihar.
Traditional regional unit.
Guntha to Katha (Bihar) conversion formula
The relationship between gunthas and kathas:
To convert gunthas to kathas, multiply the value in gunthas by 0.8001502689. To reverse, multiply kathas by 1.2497652489.
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 (Bihar) to Guntha converter for the reverse direction.
Step-by-step: convert gunthas to kathas
- Write down the value in gunthas (guntha).
- Multiply that value by the factor 0.8001502689.
- The product is the equivalent value in kathas (katha).
- To reverse, multiply the katha (bihar) value by 1.2497652489.
Worked examples
Example 1 — Convert 1 guntha to katha:
1 × 0.8001502689 = 0.8001502689 katha
Example 2 — Convert 100 guntha to katha:
100 × 0.8001502689 = 80.0150268902 katha
Guntha to Katha (Bihar) conversion table
Standard reference values for converting gunthas to kathas:
| Guntha [guntha] | Katha (Bihar) [katha] |
|---|---|
| 0.01 | 0.0080015027 |
| 0.1 | 0.0800150269 |
| 1 | 0.8001502689 |
| 2 | 1.6003005378 |
| 3 | 2.4004508067 |
| 4 | 3.2006010756 |
| 5 | 4.0007513445 |
| 10 | 8.001502689 |
| 20 | 16.003005378 |
| 30 | 24.0045080671 |
| 40 | 32.0060107561 |
| 50 | 40.0075134451 |
| 100 | 80.0150268902 |
| 500 | 400.0751344511 |
| 1000 | 800.1502689022 |
Frequently asked questions
How many kathas is 1 guntha?
How do I convert gunthas to kathas?
How do I convert kathas back to gunthas?
How many kathas is 100 gunthas?
Popular area unit conversions
Convert Guntha to other area units
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Metric / SI (5 units)
Imperial / US Customary (3 units)
Indian Subcontinent (15 units)
Sources & references
Conversion factor (1 guntha = 0.8001502689 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 Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.