Nepali Land Measurement Units Explained: Ropani, Aana, Bigha, Kattha & Dhur (2026 Guide)

Sooner or later, every Nepali household meets land arithmetic: a lalpurja that reads 4 ropani 8 aana, a Terai listing that quotes 5 kattha, a form that wants square meters. The numbers feel alien because Nepal runs two traditional measuring systems side by side — the hill ladder and the Terai ladder — and official paperwork can use either. This guide explains both ladders, gives you the standard conversion table and shows where each unit appears, so the next land figure you meet takes seconds instead of a phone call to an uncle.

Why Nepal uses two land measurement systems

Nepal’s land administration grew out of two geographies. In the hills — including the Kathmandu valley, Pokhara and most hill districts — plots were historically measured with the ropani ladder, a unit family small enough to describe terraced fields and valley plots precisely. On the flat Terai plains, where farms and settlements cover far larger continuous areas, the bigha ladder took over. When the country formalised land records, both systems were carried into the certificates, so today a single family can legitimately own hill land measured in aana and Terai land measured in kattha — and every buyer, tenant and applicant needs to read both.

The systems are not rival definitions of the same area; they are parallel ladders with fixed definitions. Once you memorise two anchor facts — one ropani is 5,476 sq ft and one bigha is 72,900 sq ft — every other conversion is arithmetic, which is exactly what the Land Area Converter automates.

The hill system: ropani, aana, paisa and daam

The hill ladder divides each unit by four as it descends: 1 ropani = 16 aana, 1 aana = 4 paisa, 1 paisa = 4 daam. A ropani equals 5,476 square feet (about 508.74 square meters) — roughly the footprint of a generous Kathmandu residential plot. One aana, at 342.25 sq ft (≈ 31.80 sq m), is the unit most urban listings quote, and small remnants such as a stairwell setback are quoted in paisa or daam. When a lalpurja reads “4–8–2”, the digits mean 4 ropani, 8 aana, 2 paisa — read the dash-separated groups left to right down the ladder.

The Terai system: bigha, kattha and dhur

The Terai ladder divides by twenty: 1 bigha = 20 kattha, 1 kattha = 20 dhur. A full bigha is 72,900 sq ft (≈ 6,772.63 sq m) — about 13.31 ropani — and is farm-scale land. The kattha (3,645 sq ft ≈ 338.63 sq m) is the everyday unit for house plots in Terai towns, while the dhur (182.25 sq ft ≈ 16.93 sq m) covers courtyards and small fragments. A Terai listing of “3–5–10” means 3 bigha, 5 kattha, 10 dhur.

The standard conversion table (sq ft & sq m)

Keep these seven rows in mind; they cover every figure you will meet in Nepali land records:

Unit	Square feet	Square meters	Ladder
1 ropani	5,476	508.74	Hill
1 aana	342.25	31.80	Hill
1 paisa	85.56	7.95	Hill
1 daam	21.39	1.99	Hill
1 bigha	72,900	6,772.63	Terai
1 kattha	3,645	338.63	Terai
1 dhur	182.25	16.93	Terai

Two cross-system anchors worth memorising: one bigha ≈ 13.31 ropani, and one kattha ≈ 0.67 ropani (about two aana short of a ropani). They are enough for quick mental estimates in any negotiation.

Where you will meet these units

Lalpurja (land ownership certificate): the kitta area is printed in the local ladder, sometimes with the Nepali unit words — रोपनी, आना, पैसा, दाम, बिघा, कट्ठा, धुर — so learn to recognise the seven Devanagari words. Naksa (blueprint): the plotted sketch of your kitta; its dimensions must agree with the lalpurja area. Forms and applications: some government and bank forms ask for area in square meters, which is why the converter’s sq m row earns its keep. Listings: urban real-estate ads quote aana (hills) and dhur or kattha (Terai) almost exclusively.

Practical tips before you sign anything

First, check that the lalpurja unit words and the naksa plot agree — a transcription slip between the two is the classic land dispute seed. Second, convert with the standard table for estimates, but treat the Land Revenue (Malpot) office’s measured figure as final for legal filings, because offices apply their own rounding conventions to boundary measurements. Third, when a deal is quoted across systems (“a kattha for the price of 15 aana”), never accept the comparison verbally: run both figures through one converter so the arithmetic, at least, is beyond argument. Finally, keep a copy of every converted figure you submit anywhere official — consistency between your form, your voucher and your certificate is what auditors actually check.

This guide explains the widely used standard conversion table for general understanding. Land records practice, rounding rules and unit usage can vary between districts and offices, and this page is not legal advice — confirm figures that carry legal or financial consequences with the local Land Revenue (Malpot) office or a licensed amin.