Land Measurement Units in Nepal Explained: Ropani, Aana, Bigha, and Kattha
One of the most confusing aspects of buying or selling real estate in Nepal is navigating two distinct land measurement systems. While official government records use standard metric measurements (Square Meters), local real estate transactions rely heavily on traditional measurement systems:
- The Ropani System: Used predominantly in the Hilly regions, including Kathmandu Valley, Pokhara, and surrounding districts.
- The Bigha System: Used across the southern plains (Terai region), such as Chitwan, Jhapa, Morang, Rupandehi, and Banke.
Understanding how these units convert into standard Square Feet (sq. ft.) and Square Meters (sq. m.) ensures you know exactly how much land you are paying for.
Here is an easy way to convert land measurement units
1. The Ropani System (Hilly Region & Kathmandu Valley)
The Ropani system is broken down into four primary subunits: Ropani, Aana, Paisa, and Daam.
Breakdown & Sub-units
| Unit | Sub unit |
|---|---|
| 1 Ropani | 16 Aana |
| 1 Aana | 4 Paisa |
| 1 Paisa | 4 Daam |
Here is an easy way to convert land measurement units
Area Conversion Chart (Ropani System)
| Unit | In Square Feet (sq. ft.) | In Square Meters (sq. m.) | Equivalent in Sub-units |
|---|---|---|---|
| 1 Ropani | 5,476 sq. ft. | 508.72 sq. m. | 16 Aana |
| 1 Aana | 342.25 sq. ft. | 31.80 sq. m. | 4 Paisa |
| 1 Paisa | 85.56 sq. ft. | 7.95 sq. m. | 4 Daam |
| 1 Daam | 21.39 sq. ft. | 1.99 sq. m. | - |
Practical Example: If a plot in Kathmandu is listed as
0-4-2-1(0 Ropani, 4 Aana, 2 Paisa, 1 Daam), the total area calculation is:Area = (4 X 342.25) + (2 X 85.56) + (1 X 21.39) = 1,561.51 sq. ft.
2. The Bigha System (Terai Region)
In the Terai region, land is measured using the Bigha system, which uses Bigha, Kattha, and Dhur.
Breakdown & Sub-units
- 1 Bigha = 20 Kattha
- 1 Kattha = 20 Dhur
Here is an easy way to convert land measurement units
Area Conversion Chart (Bigha System)
| Unit | In Square Feet (sq. ft.) | In Square Meters (sq. m.) | Equivalent in Sub-units |
|---|---|---|---|
| 1 Bigha | 72,900 sq. ft. | 6,772.41 sq. m. | 20 Kattha |
| 1 Kattha | 3,645 sq. ft. | 338.62 sq. m. | 20 Dhur |
| 1 Dhur | 182.25 sq. ft. | 16.93 sq. m. | - |
Practical Example: A plot in Chitwan measuring
0-2-10(0 Bigha, 2 Kattha, 10 Dhur) converts as follows:Area = (2 X 3645) + (10 X 182.25) = 9,112.5 sq.ft.
3. Quick Cross-System Conversion Guide
Comparing land sizes across different regions can be tricky. Here are handy cross-system approximations:
- 1 Bigha ≈ 13.31 Ropani
- 1 Kattha ≈ 10.65 Aana
- 1 Ropani ≈ 1.5 Kattha
- 1 Aana ≈ 1.88 Dhur
Here is an easy way to convert land measurement units
4. Key Takeaway for Property Buyers
- Check Official Government Land Blueprints (Napi Naksa): Official survey maps at the Land Revenue Office list areas strictly in Square Meters. Always multiply the recorded square meters by 10.7639 to calculate the exact area in Square Feet before converting to Aana or Kattha.
- Verify Boundaries: Never rely solely on approximate verbal descriptions from brokers. Measure physical plot dimensions against the Napi trace map to avoid boundary disputes with adjacent landowners.
