In the hills, including Kathmandu Valley and Pokhara, land is measured in ropani. One ropani equals 16 aana, and one aana equals roughly 342.25 square feet.
In the Terai, land is measured in bigha. One bigha equals 20 kattha, one kattha equals 20 dhur, and one dhur is about 182.25 square feet.
A common mistake is comparing a per-aana price in Kathmandu with a per-dhur price in Birgunj. Always convert both to square feet first — our unit converter does it instantly.
When reviewing a lalpurja, check whether the area is stated in ropani-aana-paisa-daam or in square metres, and reconcile the two before signing anything.