Area Converter Nepal: Ropani, Aana, Bigha, Acre → Instant

Ropani system (hill region & Kathmandu valley)
Unit	Equals	Square feet	Square metres
1 Ropani	16 Aana	5,476 ft²	508.74 m²
1 Aana	4 Paisa	342.25 ft²	31.80 m²
1 Paisa	4 Daam	85.56 ft²	7.95 m²
1 Daam	—	21.39 ft²	1.99 m²

Bigha system (Terai region)
Unit	Equals	Square feet	Square metres
1 Bigha	20 Kattha	72,900 ft²	6,772.63 m²
1 Kattha	20 Dhur	3,645 ft²	338.63 m²
1 Dhur	—	182.25 ft²	16.93 m²

Ropani to square feet (quick reference)
Ropani	Square feet	Square metres	Aana
1	5,476	508.74	16
2	10,952	1,017.48	32
3	16,428	1,526.23	48
4	21,904	2,034.97	64
5	27,380	2,543.71	80
10	54,760	5,087.42	160

Aana to square feet (quick reference)
Aana	Square feet	Square metres
1	342.25	31.80
2	684.5	63.59
4 (¼ Ropani)	1,369	127.19
8 (½ Ropani)	2,738	254.37
16 (1 Ropani)	5,476	508.74

Kattha to square feet (quick reference)
Kattha	Square feet	Square metres
1	3,645	338.63
2	7,290	677.26
5	18,225	1,693.16
10 (½ Bigha)	36,450	3,386.32
20 (1 Bigha)	72,900	6,772.63

Cross-system equivalents
From	Ropani system	Bigha system	Other
1 Bigha	≈ 13.31 Ropani (≈ 213 Aana)	20 Kattha	≈ 1.67 acre
1 Ropani	16 Aana	≈ 0.0751 Bigha (≈ 1.50 Kattha)	≈ 0.126 acre / 508.74 m²
1 Kattha	≈ 0.67 Ropani (≈ 10.65 Aana)	20 Dhur	≈ 0.084 acre
1 Aana	4 Paisa	≈ 1.88 Dhur	342.25 ft²
1 acre	≈ 7.95 Ropani	≈ 0.60 Bigha (≈ 11.95 Kattha)	43,560 ft²
1 hectare	≈ 19.66 Ropani	≈ 1.48 Bigha	107,639 ft²

How this works

Use this Nepal Land Area Converter to convert land units such as Ropani, Aana, Paisa, Daam, Bigha, Kattha, Dhur, acre, square feet and square metre. It is useful for land buyers, homeowners, engineers, real estate agents, and anyone checking area from Lalpurja or property documents.

Exact Nepal land conversion answers

Ropani to sq m

1 Ropani = 508.74 sq m

Also 5,476 sq ft and 16 Aana — common Lalpurja metric check.

Aana to sq ft

1 Aana = 342.25 sq ft

4 Aana = 1,369 sq ft; reverse: sq ft ÷ 342.25 = Aana.

Dhur to Aana

1 Dhur ≈ 0.53 Aana

1 Aana ≈ 1.88 Dhur; 20 Dhur = 1 Kattha ≈ 10.65 Aana.

1 Kattha to Aana

1 Kattha ≈ 10.65 Aana

1 Kattha = 3,645 sq ft = 20 Dhur in Nepal Terai.

1 Bigha to Ropani

1 Bigha = 13.31 Ropani

Same area is about 213 Aana or 72,900 sq ft.

1 Acre to Ropani

1 Acre = 7.95 Ropani

1 acre is 43,560 sq ft, which is about 127.28 Aana.

Ropani to Bigha

1 Ropani = 0.0751 Bigha

Hill-to-Terai conversion when comparing land prices.

Sq m to Aana

1 Aana = 31.80 m²

Aana = m² ÷ 31.80. 100 m² ≈ 3.14 Aana.

How to Convert Ropani to Aana

One ropani equals 16 aana. To convert ropani to aana, multiply the ropani value by 16. For example, 2 ropani equals 32 aana.

How to Convert Square Feet to Aana

One aana equals 342.25 square feet. To convert square feet to aana, divide the square feet value by 342.25. For example, 1369 square feet equals 4 aana.

How to Convert Bigha to Ropani

One bigha equals 72,900 square feet and one ropani equals 5,476 square feet, so one bigha is about 13.31 ropani. Use this conversion when comparing Terai land units with hill-region land units.

Common Land Area Units in Nepal

Unit	Equals	Common use
1 Ropani	16 Aana / 5,476 sq ft	Hill region and Kathmandu Valley
1 Aana	4 Paisa / 342.25 sq ft	Small residential plots
1 Bigha	20 Kattha / 72,900 sq ft	Terai land measurement
1 Kattha	20 Dhur / 3,645 sq ft	Terai residential and farm land

Land Area Conversion Table

Every conversion routes through the canonical square-metre value. Plain unit conversions use the BIPM / NIST exact factors:

1 ft² = 0.09290304 m²       (exact)
1 yd² = 0.83612736 m²       (exact)
1 acre = 4046.8564224 m²    (exact)
1 hectare = 10,000 m²       (exact)

1 Ropani = 5476 ft² ≈ 508.7424 m²
1 Ropani = 16 Aana = 64 Paisa = 256 Daam

1 Bigha (Nepal/Bihar) = 72,900 ft² ≈ 6772.63 m²
1 Bigha = 20 Kattha = 400 Dhur

The breakdown decomposition uses integer floors for the higher-order units and lets the smallest sub-unit (Daam or Dhur) carry any fractional residue, so the round-trip back to m² is lossless.

Worked example

Enter 508.7424 m² (the default) — exactly 1 Ropani:

ft² = 5476
yd² ≈ 608.44
acre ≈ 0.1257
hectare ≈ 0.0509
Ropani breakdown = 1 Ropani · 0 Aana · 0 Paisa · 0 Daam
Bigha breakdown ≈ 0 Bigha · 1.5 Kattha · 0.05 Dhur

Try entering 4 Aana directly to see the control flip the input mode while preserving the canonical m² value behind the scenes.

Sources

Conversion factors: BIPM / NIST exact unit definitions; Nepal Survey Department Ropani / Bigha conversion table.

FAQ

1 Ropani is how many square metres?

1 Ropani equals about 508.74 square metres. It also equals exactly 5,476 square feet, 16 Aana, 64 Paisa, or 256 Daam in Nepal's hill land-unit system.

1 Aana is how many square feet?

1 Aana equals exactly 342.25 square feet, or about 31.80 square metres. A 4-Aana Kathmandu plot is 1,369 square feet, and 16 Aana make 1 Ropani.

How do I convert square feet or square metres to Aana?

Divide square feet by 342.25, or divide square metres by 31.80. Example: 1,000 sq ft ≈ 2.92 Aana; 100 m² ≈ 3.14 Aana. Reverse: multiply Aana by 342.25 for sq ft or by 31.80 for m².

How many Aana is 1 Dhur, 1 Kattha, or 1 Bigha?

1 Dhur ≈ 0.5325 Aana, 1 Kattha ≈ 10.65 Aana, and 1 Bigha ≈ 213 Aana (about 13.31 Ropani). These use 182.25, 3,645, and 72,900 square feet respectively, divided by 342.25 sq ft per Aana.

1 Aana is how many Dhur?

1 Aana equals about 1.88 Dhur (more precisely ≈ 1.8779 Dhur). Formula: dhur = aana × (342.25 ÷ 182.25).

1 Bigha is how many Ropani in Nepal?

1 Bigha equals about 13.31 Ropani in Nepal. The calculation is 72,900 square feet per Bigha divided by 5,476 square feet per Ropani, which gives approximately 13.3127 Ropani.

1 Ropani is how many Bigha?

1 Ropani equals about 0.0751 Bigha. The calculation is 5,476 square feet per Ropani divided by 72,900 square feet per Bigha.

1 Acre is how many Ropani?

1 Acre equals about 7.95 Ropani. One acre is 43,560 square feet, and one Ropani is 5,476 square feet, so 43,560 ÷ 5,476 = 7.9547 Ropani (about 127.28 Aana).

What is the Ropani-Aana-Paisa-Daam system?

Ropani is the traditional unit of land measurement used in Nepal's hill region, including the Kathmandu valley. One Ropani is divided into 16 Aana, each Aana into 4 Paisa, and each Paisa into 4 Daam.

What is the Bigha-Kattha-Dhur system?

Bigha is the traditional land measurement unit used in Nepal's Terai region. One Nepal Bigha equals 20 Kattha or 400 Dhur, and one Kattha equals 20 Dhur.

Nepal Area Converter — Ropani, Aana, Bigha, Acre

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