Nepali Unit and Date Converter
All-in-one tool for Nepal: Convert BS to AD dates, Ropani/Bigha land area, and Tola/Gold weights. Accurate, offline-ready, and compliant with Nepal Standards.
About
This tool is a comprehensive utility designed specifically for the unique measurement systems used in Nepal. Unlike standard global converters, Nepali measurements rely on traditional units that vary by region (Terai vs. Hills) and context (Land vs. Gold). This calculator addresses the risk of financial errors in real estate and gold transactions by using the official conversion standards set by the Nepal Bureau of Standards & Metrology.
It includes a high-precision Bikram Sambat (BS) calendar engine, capable of converting dates between BS and AD accounting for the irregular month lengths (29 to 32 days) that occur in the Nepali calendar. Whether you are calculating the area of a Ropani for a land deed or converting Tola for jewelry fabrication, this tool provides the exact metric equivalents.
Formulas
The core conversion logic relies on normalizing all inputs to a base unit before converting to the target. For land, the base unit is Square Feet (ft2).
Hill System (Ropani):
Area={Reference Data
| Category | Nepali Unit | Metric/Imperial Equivalent | Standard Formula |
|---|---|---|---|
| Land (Hill) | 1 Ropani | 5476 sq. ft | R ร 16 Aana |
| Land | 1 Aana | 342.25 sq. ft | A ร 4 Paisa |
| Land | 1 Paisa | 85.56 sq. ft | P ร 4 Daam |
| Land (Terai) | 1 Bigha | 72,900 sq. ft | B ร 20 Kattha |
| Land | 1 Kattha | 3,645 sq. ft | K ร 20 Dhur |
| Land | 1 Dhur | 182.25 sq. ft | - |
| Weight (Gold) | 1 Tola | 11.6638 Grams | 180 Grains |
| Weight | 1 Lal | 0.1166 Grams | 1/100 Tola |
| Weight (Mass) | 1 Dharni | 2.3934 Kg | 12 Pau |