Nepal uses two distinct land measurement systems — Ropani-Aana-Paisa-Daam in hilly regions (Kathmandu, Pokhara, hills), and Bigha-Kattha-Dhur in the Terai plains (Birgunj, Janakpur, Biratnagar). For real estate transactions, inheritance documents, and government records, accurate conversion is critical.
This guide explains both systems, their conversions, and when each is used.
Convert Nepal Land Units — Free
Ropani, Aana, Bigha, Kattha to sq m, acres, hectares.
Hilly Region System (Ropani-Aana-Paisa-Daam)
| Unit | Equals | Square Meters |
|---|---|---|
| 1 Ropani | 16 Aana | 508.74 sq m |
| 1 Aana | 4 Paisa | 31.80 sq m |
| 1 Paisa | 4 Daam | 7.95 sq m |
| 1 Daam | — | 1.99 sq m |
Used in: Kathmandu Valley, Pokhara, hilly districts.
Terai System (Bigha-Kattha-Dhur)
| Unit | Equals | Square Meters |
|---|---|---|
| 1 Bigha | 20 Kattha | 6,772.63 sq m |
| 1 Kattha | 20 Dhur | 338.63 sq m |
| 1 Dhur | — | 16.93 sq m |
Used in: Terai plains — Birgunj, Janakpur, Biratnagar, Bardia, Kanchanpur.
Cross-System Conversions
| Conversion | Equivalent |
|---|---|
| 1 Bigha | 13.31 Ropani |
| 1 Ropani | 1.5 Kattha |
| 1 Ropani | 5,476 sq ft |
| 1 Bigha | 72,900 sq ft |
| 1 Acre | ~7.96 Ropani |
| 1 Acre | ~0.6 Bigha |
When to Use Which System
- Property transactions — use whichever is local
- Government documents — Lalpurja shows local unit + sq m
- Real estate listings — most use Aana (hills) or Kattha (Terai)
- International comparison — convert to acres or hectares
How to Use the Tool (Step by Step)
- 1
Pick System
Hill (Ropani) or Terai (Bigha).
- 2
Enter Land Area
In whichever unit you have.
- 3
Convert to Other Units
Tool shows sq m, sq ft, acres, hectares.
- 4
Cross-System Convert
Ropani to Bigha or vice versa.
- 5
Save for Reference
Useful for property documents.
Frequently Asked Questions
Which is bigger — Ropani or Bigha?+−
Bigha is much bigger. 1 Bigha ≈ 13.31 Ropani.
Why does Nepal have two systems?+−
Hill regions use Ropani for terraced farming (smaller plots). Terai plains use Bigha (larger contiguous fields), influenced by Indian usage.
How big is a Ropani in square feet?+−
5,476 sq ft. About 0.13 acres.
How big is a Kattha in sq meters?+−
338.63 sq m or 3,645 sq ft.
Can land be measured in acres in Nepal?+−
Possible in international transactions, but legal documents require local units.
How accurate are land measurements in Nepal?+−
Government surveys (Bhumi Sudhar) are authoritative. Private measurements may vary by ±5%.
Convert Nepal Land Units — Free
Ropani, Aana, Bigha, Kattha to sq m, acres, hectares.
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