How to convert between BS and AD
- Choose BS → AD to turn a Nepali date into an English date, or AD → BS for the opposite.
- Pick the date. The result updates instantly, with the weekday.
- Copy the result in YYYY-MM-DD format with the copy button.
- The exact age from that date to today is shown too, handy for forms that ask for age in years.
About the Bikram Sambat calendar
Bikram Sambat (BS, also written Vikram Samvat) is the official calendar of Nepal. Government offices, citizenship certificates, school records, bank documents and most Nepali forms use BS dates, while passports, international documents and foreign applications use AD. That is why people in Nepal constantly convert dates of birth and deadlines between the two.
The BS year starts on Baisakh 1, which falls on 13 or 14 April. Unlike the Gregorian calendar, months do not have fixed lengths: each month has 29 to 32 days and the lengths change from year to year. The converter uses a published calendar table covering BS 2000–2090, and it is tested against known new-year dates.
When you need to convert
- Passport and visa forms: your citizenship certificate shows your date of birth in BS, but passport and visa applications need it in AD.
- Foreign university and job applications: transcripts and experience letters dated in BS must be quoted in AD.
- Lok Sewa and government forms: deadlines and ages are counted in BS, often against an AD date of birth.
- Festivals and family events: find the English date of Dashain, Tihar or a birthday that is celebrated on the BS date.
Nepali months
| # | Month | Nepali | Roughly |
|---|---|---|---|
| 1 | Baisakh | बैशाख | mid-April – mid-May |
| 2 | Jestha | जेठ | mid-May – mid-June |
| 3 | Asar | असार | mid-June – mid-July |
| 4 | Shrawan | साउन | mid-July – mid-August |
| 5 | Bhadra | भदौ | mid-August – mid-September |
| 6 | Ashwin | असोज | mid-September – mid-October |
| 7 | Kartik | कार्तिक | mid-October – mid-November |
| 8 | Mangsir | मंसिर | mid-November – mid-December |
| 9 | Poush | पुष | mid-December – mid-January |
| 10 | Magh | माघ | mid-January – mid-February |
| 11 | Falgun | फागुन | mid-February – mid-March |
| 12 | Chaitra | चैत | mid-March – mid-April |
Need the time difference between two dates, or the time in Nepal? Use the Date Difference Calculator, Age Calculator and Time Zone Converter (Nepal is UTC+5:45).
Frequently asked questions
How do I convert a Nepali date to an English date?
Choose BS → AD, pick the year, month and day in Bikram Sambat, and the English (Gregorian) date appears instantly with the weekday.
How do I find my date of birth in BS?
Choose AD → BS and enter your English date of birth. The Nepali date is shown in English and in Devanagari, together with your exact age.
What is the difference between BS and AD?
Bikram Sambat is about 56 years and 8 months ahead of the Gregorian calendar. The Nepali new year (Baisakh 1) falls on 13 or 14 April.
Which years are supported?
BS 2000 to 2090, which is roughly April 1943 to April 2034 AD.
Why can't I just add 56 years and 8 months?
BS months have 29 to 32 days and change every year, based on astronomical calculations. A fixed offset is often off by one or more days, so a calendar table is needed.