How to use the BS to AD converter
- Choose BS → AD to turn a Nepali date (for example from a citizenship certificate) into an English date.
- Pick the year, month and day. Only days that exist in that month are shown.
- The English date and weekday appear instantly. Switch to AD → BS to go the other way.
About the Bikram Sambat calendar
Bikram Sambat (विक्रम सम्वत्) is Nepal's official calendar. Government documents, school certificates, citizenship cards and many contracts in Nepal use BS dates, while passports, foreign universities, visa forms and most online services ask for AD. Converting between them is one of the most common everyday tasks for Nepalis at home and abroad.
The year has twelve months: Baisakh, Jestha, Asar, Shrawan, Bhadra, Ashwin, Kartik, Mangsir, Poush, Magh, Falgun and Chaitra. Unlike Gregorian months, their lengths are not fixed. Jestha or Asar can have 32 days in one year and 31 the next. A simple "subtract 56 years, 8 months and 17 days" rule is therefore often off by a day or two. This converter uses the actual month lengths for every year instead.
Quick reference
- 1 Baisakh 2082 BS = Monday, 14 April 2025 AD
- 1 Baisakh 2083 BS = Tuesday, 14 April 2026 AD
- Nepal's fiscal year starts on 1 Shrawan; 1 Shrawan 2082 BS = 17 July 2025 AD
Writing an amount for a cheque dated in BS? Use our number to words converter for the lakh/crore wording.
Questions people ask
How many years is BS ahead of AD?
Bikram Sambat is about 56 years and 8 months ahead of the Gregorian calendar. From mid-April to 31 December, add 57 to the AD year; from 1 January to mid-April, add 56. The exact day still needs a converter because BS months have different lengths each year.
Why do BS months have 29 to 32 days?
Bikram Sambat months follow the sun's movement through the zodiac signs, so their length changes from year to year. That is why BS dates cannot be converted with a fixed formula and need an official month-length table.
Which years does this converter support?
BS 2000 to 2090, which is 14 April 1943 to mid-April 2034 AD. That covers birth dates, citizenship, academic certificates and official documents for almost everyone.
When does the Nepali new year start?
1 Baisakh, which falls on 13, 14 or 15 April in the Gregorian calendar. For example, 1 Baisakh 2082 BS was 14 April 2025.
How accurate is this tool?
The month-length data was checked against a second independent open-source calendar dataset, and every day from 1944 to 2032 converts identically in both. For legal or official use, always confirm against your document or the official Nepali patro.
Updated · 26 Kartik 2083 BS