SajiloTools/Guides/Ropani, Aana, Bigha, Kattha — Complete Nepali Land Measurement Guide
Nepal6 min readJuly 27, 2025

Ropani, Aana, Bigha, Kattha — Complete Nepali Land Measurement Guide

Understand Nepal's two land measurement systems (Ropani/Aana for hills, Bigha/Kattha for Terai), exact conversion factors, and how they map to square feet and square meters.

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Two Systems, One Country

Nepal uses two completely different land measurement systems depending on geographical topography and administrative history:

  • Ropani-Aana-Paisa-Dam — used throughout the Kathmandu Valley and hilly/mountainous districts.
  • Bigha-Kattha-Dhur — used across the Terai/plains (Birgunj, Biratnagar, Chitwan, Janakpur, Butwal, Nepalgunj, Jhapa, etc.).

Hill System: Ropani-Aana-Paisa-Dam

In Kathmandu and the hills, land is bought and sold primarily in Aana (e.g. 3 Aana, 4 Aana residential plots) and Ropani:

Scroll table horizontally Swipe ➔
UnitSubdivisionSq. FeetSq. Meters
1 Ropani= 16 Aana5,476508.74
1 Aana= 4 Paisa342.2531.80
1 Paisa= 4 Dam85.567.95
1 Dam—21.391.99

Terai System: Bigha-Kattha-Dhur

In the Terai, land sizes are significantly larger and measured in Kattha and Bigha:

Scroll table horizontally Swipe ➔
UnitSubdivisionSq. FeetSq. Meters
1 Bigha= 20 Kattha72,9006,772.63
1 Kattha= 20 Dhur3,645338.63
1 Dhur—182.2516.93

Cross-System Conversion: Ropani ↔ Bigha

To convert between the two regional systems, use Square Feet as the common bridge:

  • 1 Bigha = 72,900 sq ft ÷ 5,476 sq ft/ropani ≈ 13.31 Ropani (13 Ropani, 5 Aana approx.)
  • 1 Ropani ≈ 0.0751 Bigha (approximately 1.5 Kattha or 30 Dhur)
  • 1 Kattha = 3,645 sq ft ≈ 10.65 Aana

Lalpurja (Deed) Measurements & Square Meters

Official Nepal Land Revenue Offices (Malpot Karyalaya) and cadastral maps now record land areas in Square Meters (Sq. M) on modern digital Lalpurjas. To quickly convert your Lalpurja square meters into Ropani, Aana, or Kattha, use our free Nepal Land Unit Converter.