Detailed Information on Ropani, Bigha, and Square Feet (land unit converter)

Buying and selling land in Nepal is a complex process. One of the main reasons is the use of different land measurement units depending on the geographical region. In Kathmandu, land deals are discussed in “Aana,” while in Chitwan or Jhapa, calculations are done in “Kattha.”

To clear this confusion and make construction work easier, Nirman Sutra has introduced the most accurate and reliable land unit converter. In this blog, we will discuss in detail every aspect of Nepal’s land measurement system, government standards, and how to use our tool.

Nepal’s Land Measurement System: An Introduction

Nepal’s Department of Survey mainly divides land measurement(land unit converter) into two systems:

1. Hill Region: Uses Ropani, Aana, Paisa, and Daam (R-A-P-D).
2. Terai Region: Uses Bigha, Kattha, and Dhur (B-K-D).

In recent times, square feet (sq. ft) and square meters (m²) have become almost mandatory in engineering and government maps. Therefore, even a small error while converting from one system to another can result in losses of hundreds of thousands of rupees.

Hill System (Ropani-Aana-Paisa-Daam)

This system is standard in the Kathmandu Valley and hilly districts.

Ropani

1 Ropani = 5,476 square feet

• 1 Ropani = 5,476 sq. ft.
• 1 Ropani = 508.74 m²

Aana

The Most Important Unit Most land transactions in urban areas of Nepal are done in Aana.

• 1 Aana = 342.25 square feet (Our calculator uses the official 342.25 value, which matches government measurements).
• 1 Aana = 31.80 m²

Paisa & Daam

• 1 Aana = 4 Paisa (1 Paisa = 85.56 sq. ft.)
• 1 Paisa = 4 Daam (1 Daam = 21.39 sq. ft.)

Terai System (Bigha-Kattha-Dhur)

Larger units are used in the flat Terai region because of extensive cultivable land.

Bigha

1 Bigha is equal to 13.31 Ropani of the hill system.

• 1 Bigha = 72,900 sq. ft.
• 1 Bigha = 6,772.63 m²

Kattha

• 1 Bigha = 20 Kattha
• 1 Kattha = 3,645 sq. ft.

Dhur

• 1 Kattha = 20 Dhur
• 1 Dhur = 182.25 sq. ft.

How to Use Nirman Sutra Land Unit Converter

Our tool is designed to make your work fast and accurate. Here’s how to use it:

1. Enter Value – Type the numerical value of the land you have.
2. Select From Unit – Choose the current unit (e.g., Aana, Ropani, Bigha, or sq. ft).
3. Instant Result – Click “Calculate” and our system will instantly show the equivalent value in both Hill and Terai systems based on official government standards.
4. Full Breakdown– You will get complete details in square feet, square meters, Ropani-Aana-Paisa-Daam, and Bigha-Kattha-Dhur all in one place.

Conversion Table (Nepal Land Converter)

Unit	Sq. Ft	m²	Equivalent in Other System
1 Aana	342.25	31.80	1.877 Dhur
1 Ropani	5,476.00	508.74	16 Aana
1 Kattha	3,645.00	338.63	10.65 Aana
1 Bigha	72,900.00	6,772.63	13.31 Ropani
1 Dhur	182.25	16.93	0.532 Aana
1 Acre	43,560.00	4,046.86	7.95 Ropani

Why Choose Nirman Sutra?

Many converters are available, but Nirman Sutra stands out because:

• Engineering Precision: We use the official 342.25 sq. ft per Aana (not the commonly mistaken 342.29), eliminating small errors in large plots.
• Simple UI/UX: No confusion between metric and imperial — all results are shown at once.
• All Units in One Place: Convert Ropani to Bigha or Aana to Dhur with a single click.
• Built for Construction: Created from the real experience of civil engineers and construction professionals.

Important Technical Tips When Measuring Land

• Road Deduction: Always check how much land needs to be left for road access. Not all land shown on maps may be usable for building.
• Shape & Area: If the plot is irregular, simply multiplying length × width can give wrong results. Use our Area Calculator in such cases.
• Lal Purja vs Field Reality: There can be boundary disputes between official documents and actual land. Always verify boundaries through an authorized Amin (surveyor).

Conclusion

Understanding land measurement means protecting your property. Whether you are buying a small plot in a narrow alley of Kathmandu or doing large-scale plotting in the Terai, correct knowledge of Nepal land units saves you from being cheated.

Try Nirman Sutra’s land unit converter today and make your construction journey safe and professional.

(This blog is prepared with focus on engineering accuracy and the needs of the local Nepali construction market. Download the Nirman Sutra app for more information and construction calculators.)

Frequently Asked Questions (FAQ)

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