How to convert bighas to kathas
To convert bighas to kathas, multiply the value by the conversion factor 20. To go the other way, multiply by 0.05 (or divide by 20).
Worked example: 5 bigha to katha
- Write the value: 5 bigha
- Multiply by 20: 5 × 20
- Result: 100 katha
Bigha to Katha conversion table
Quick reference values, rounded to 6 significant digits.
| Bigha (bigha) | Katha (katha) |
|---|---|
| 0.1 bigha | 2 katha |
| 0.25 bigha | 5 katha |
| 0.5 bigha | 10 katha |
| 1 bigha | 20 katha |
| 2 bigha | 40 katha |
| 3 bigha | 60 katha |
| 4 bigha | 80 katha |
| 5 bigha | 100 katha |
| 6 bigha | 120 katha |
| 7 bigha | 140 katha |
| 8 bigha | 160 katha |
| 9 bigha | 180 katha |
| 10 bigha | 200 katha |
| 12 bigha | 240 katha |
| 15 bigha | 300 katha |
| 20 bigha | 400 katha |
| 25 bigha | 500 katha |
| 30 bigha | 600 katha |
| 40 bigha | 800 katha |
| 50 bigha | 1,000 katha |
| 75 bigha | 1,500 katha |
| 100 bigha | 2,000 katha |
| 250 bigha | 5,000 katha |
| 500 bigha | 10,000 katha |
| 1,000 bigha | 20,000 katha |
Katha to Bigha
| katha | bigha |
|---|---|
| 1 katha | 0.05 bigha |
| 5 katha | 0.25 bigha |
| 10 katha | 0.5 bigha |
| 50 katha | 2.5 bigha |
| 100 katha | 5 bigha |
1 Bigha in other area & land units
About Bigha and Katha
What is a bigha (bigha)?
A bigha (বিঘা) equals 20 katha. The standard bigha in Bangladesh is 14,400 square feet, or about 33 decimal. Local values may vary.
What is a katha (katha)?
A katha (কাঠা) is a traditional land unit. The standard katha used in Dhaka equals 720 square feet, or about 1.65 decimal. Values can differ by region.
Important for land buyers: traditional units like katha and bigha differ between districts. This converter uses the standard values used in Dhaka and most official calculations: 1 katha = 720 sq ft, 1 bigha = 20 katha = 14,400 sq ft, 1 decimal (shotok) = 435.6 sq ft, 1 acre = 100 decimal. Always confirm the local value written in your deed (দলিল) or with the land office (AC Land).
Where bigha to katha conversion is used
Area & land conversions are needed for buying and selling land, flats, deed (dolil) records, construction planning and farming. Converting between bighas and kathas is especially common when you compare products, read foreign specifications, or fill in forms that expect a specific unit.
Need every unit at once? Use the full Area & Land Converter.
Frequently asked questions
How many kathas are in 1 bigha?
1 Bigha equals 20 katha.
How do I convert bighas to kathas?
Multiply the number of bighas by 20. For example, 5 bigha × 20 = 100 katha.
What is 5 bigha in katha?
5 bigha = 100 katha.
How many bighas are in 1 katha?
1 Katha equals 0.05 bigha. Use the Katha to Bigha converter for the reverse direction.
Is this Bigha to Katha converter accurate?
Yes. It uses exact internationally defined conversion factors and the standard Bangladeshi values for traditional units, calculated with full floating-point precision. Results are displayed rounded for readability.