Nepali date converter (B.S. to A.D. & A.D. to B.S.)
Convert Bikram Sambat (B.S.) dates to English Gregorian (A.D.) dates and back using verified year-by-year Nepal month-length tables.
Runs directly in your browser with instant output, keyboard accessibility, and one-click copy.
Bikram Sambat (B.S.) & Gregorian (A.D.) Date Converter
1975–2099 B.S.No fixed-offset guesswork
Bikram Sambat months vary between 29 and 32 days each year; this converter uses exact month-length lookup tables across 125 BS years.
BS to AD and AD to BS
Convert citizenship, birth, academic, and official dates in either direction and see the exact weekday and ISO format.
Synced to UTC +05:45
Load the current date in Nepal with one click regardless of which time zone your device is currently set to.
How to convert between Nepali (B.S.) and English (A.D.) dates
Select your conversion direction first: choose English (A.D.) to Nepali (B.S.) if you have a Gregorian date, or Nepali (B.S.) to English (A.D.) if your document lists a Bikram Sambat date. Choose the year, month name, and day, then click Convert date.
Why subtracting 56 years and 8 months is inaccurate
A common rule of thumb in Nepal is to subtract 56 years, 8 months, and 15 days from a Bikram Sambat date. Because Bikram Sambat is a solar sidereal calendar where months can have 29, 30, 31, or 32 days depending on the year, a fixed offset frequently misses the true date by 1 to 3 days. Always use a year-by-year calendar dataset for citizenship certificates, passports, academic transcripts, and legal filings.
Converting dates for Nagarikta, Passports, Academic Transcripts, and Lok Sewa
When applying for a machine-readable or e-Passport in Nepal, filling out Diversity Visa (DV) or foreign university forms, or verifying age eligibility for Lok Sewa Aayog examinations, even a single day's discrepancy between Bikram Sambat and Gregorian dates can cause document rejection. Always verify that the Bikram Sambat year, month, and day printed on your Nagarikta (citizenship certificate) or SEE/NEB transcript are entered in the exact YYYY-MM-DD order before copying the ISO Gregorian result.
Supported date range & Bikram Sambat months
| B.S. Month | Nepali Name | Approximate Gregorian Overlap |
|---|---|---|
| 1. Baishakh / 2. Jestha / 3. Ashadh | वैशाख / जेठ / असार | Mid-April to Mid-July |
| 4. Shrawan / 5. Bhadra / 6. Ashwin | साउन / भदौ / असोज | Mid-July to Mid-October |
| 7. Kartik / 8. Mangsir / 9. Poush | कात्तिक / मंसिर / पुस | Mid-October to Mid-January |
| 10. Magh / 11. Falgun / 12. Chaitra | माघ / फागुन / चैत | Mid-January to Mid-April |
| Supported B.S. Span | १ वैशाख १९७५ – ३० चैत २०९९ | 1 Baishakh 1975 B.S. to 30 Chaitra 2099 B.S. (125 Years) |
| Corresponding A.D. Span | 13 April 1918 – 13 April 2043 | Exact day-by-day lookup table (No fixed offset) |
Common questions
What date range is supported by this converter?
It supports 1 Baishakh 1975 B.S. through 30 Chaitra 2099 B.S., which corresponds to 13 April 1918 A.D. through 13 April 2043 A.D.
Why was my Bikram Sambat day rejected as invalid?
Some B.S. months have 29 or 30 days in a specific year while others have 31 or 32. If you enter day 32 for a month that only had 30 days in that year, the converter alerts you.
Can I calculate my exact age from my converted birth date?
Yes. Copy the ISO Gregorian date from the result box and paste it into our Age Calculator to get your completed years, months, and days.
Why does New Year in Nepal (1 Baishakh) usually fall on 13 or 14 April?
1 Baishakh marks Mesh Sankranti—the astronomical moment the sun enters the sidereal zodiac sign of Aries—which occurs in mid-April on the Gregorian calendar.
What should I do if my document date is earlier than 1975 B.S. or later than 2099 B.S.?
Because Bikram Sambat month lengths for future centuries are finalized by official Panchanga Nirnayak Samiti tables, Yannis restricts conversions to the verified 1975–2099 B.S. range rather than guessing unverified month lengths.
Need to verify a source or report an issue?
All formulas, datasets, and official references used on Yannis are documented openly.