Convert between traditional and modern land units instantly. Type a value in any field to calculate between Ropani, Bigha, Square Feet, and Square Meters.
// Hilly & Terai land units
Hilly and Terai units are separate systems — pick the region, then type into any field.
// Rough planning figure, not a quote
Based on built-up area, floors, location and finish level.
Indicative only. Rates are general market ranges and are not a formal quotation. Confirm current figures before advising a client.
// Illustrative pattern, not a bylaw lookup
Rough sense of setbacks, ground coverage and floor area ratio by road width.
⚠ Not verified against current municipal bylaw text — this is a general pattern only, and setback/FAR rules vary by municipality, ward and zoning overlay. Confirm every figure with a licensed engineer or your local ward office before use.
// Reducing-balance formula
Monthly installment for financing land or construction.
Indicative only, standard reducing-balance EMI formula. Actual terms depend on your lender.
// Order-of-magnitude thumb rules
Rough quantities for key materials based on built-up area.
Rough order-of-magnitude estimate using standard per-sq-ft thumb-rule rates. Actual material take-off depends on structural design, wall type and specification — always verify with a structural BOQ.
Nepal uses two separate land measurement systems depending on region. Ropani, Aana, Paisa and Daam are used across Kathmandu Valley and the hill districts. Bigha, Katha and Dhur are used across the Terai. Use the Hilly tab above to convert Ropani, Aana, Paisa and Daam, or the Terai tab for Bigha, Katha and Dhur. Type a number into any field and the rest update automatically, so you can convert either direction, Aana to square feet, square feet to Aana, Dhur to Aana, or Katha to Aana.
Unit reference table
Verify every figure below against the calculator’s own output before publishing.
Hilly unit | Aana | Paisa | Daam | Sq. Feet | Sq. Metre |
1 Ropani | 16 | 64 | 256 | 5,476 | 508.72 |
1 Aana | — | 4 | 16 | 342.25 | 31.80 |
1 Paisa | — | — | 4 | 85.56 | 7.95 |
1 Daam | — | — | — | 21.39 | 1.99 |
Terai unit | Katha | Dhur | Sq. Feet | Sq. Metre |
1 Bigha | 20 | 400 | 72,900 | 6,772.63 |
1 Katha | — | 20 | 3,645 | 338.63 |
1 Dhur | — | — | 182.25 | 16.93 |
Cross-system reference (Hilly to Terai, converted via square feet)
From | To | Approx. |
1 Bigha | Ropani | 13.31 Ropani |
1 Katha | Aana | 10.65 Aana |
1 Aana | Dhur | 1.88 Dhur |
1 Dhur | Aana | 0.53 Aana |
Get a rough construction cost range based on built-up area, number of floors, location, and finish level. This is a planning tool, not a quotation. Actual cost depends on design, site conditions, material specification and current market rates. For an accurate figure, book a consultation with our team.
Get a general sense of setback, ground coverage and floor area ratio (FAR) based on your plot size and adjoining road width. Setback and FAR rules vary by municipality, ward and zoning overlay, so treat this as a starting point. Always confirm exact figures with a licensed engineer or your local ward office before finalising a design. Talk to us about your plot for a proper assessment.
Estimate your monthly installment for land purchase or construction financing using the standard reducing-balance EMI formula. Enter loan amount, interest rate and tenure to see indicative monthly payments, total interest and total repayment. This is a planning estimate only. Actual terms depend on your lender.
Get a rough quantity estimate for steel, bricks, sand and aggregate based on your built-up area and number of floors, using standard per-square-foot thumb-rule rates. Actual material take-off depends on structural design, wall type and specification. Always verify against a structural BOQ before ordering materials. Request a detailed BOQ from our team.
1 Aana is approximately 342.25 square feet.
1 Aana is approximately 1.88 Dhur. Both are area units, Aana from the Hilly system and Dhur from the Terai system, and convert to each other via square feet: 1 Aana equals about 342.25 sq ft, and 1 Dhur equals about 182.25 sq ft.
1 Dhur is approximately 0.53 Aana, just over half an Aana. Use the Terai tab to convert your Dhur figure to square feet, then the Hilly tab to convert that figure to Aana.
1 Katha is approximately 3,645 square feet, or 20 Dhur.
1 Aana is approximately 31.80 square metres. Divide your square metre figure by this to get Aana, or enter it directly into the converter above.
1 Ropani is approximately 5,476 square feet, or 16 Aana
The Hilly system, Ropani, Aana, Paisa and Daam, is used in Kathmandu Valley and hill districts. The Terai system, Bigha, Katha and Dhur, is used across Nepal’s southern plains. Both systems convert to each other and to square feet or square metres using fixed factors, see the reference table above.
