How to convert your Nepali date of birth from BS to AD — step by step
Passports, visas, international job applications and foreign universities all need your date of birth in AD. Here's how to convert accurately from your BS DOB.
February 3, 2026 · 5 min read
Why you need your DOB in AD
Nepal's citizenship certificates, school-leaving certificates (SLC/SEE) and many official documents record dates in Bikram Sambat. However, passports, visa applications, foreign university forms, and most international services require dates in the Gregorian (AD) calendar. Getting the conversion exactly right matters — a single-day error can invalidate a visa or cause identity verification failures.
The fast method: use the converter
The simplest approach is the BS to AD converter:
- Find your BS date of birth on your citizenship card or birth certificate.
- Enter the year, month and day.
- The converter returns the exact AD date — day, month and year.
No arithmetic, no risk of the mid-April year-boundary error.
Common mistake: the year boundary error
Many people subtract 56 or 57 from their BS birth year to get the AD year. This works most of the time, but fails for births in Baisakh, Jestha, and Ashadh (months 1–3), where the correct offset is 56, not 57. For example, someone born in Baisakh 2040 BS was born in April 1983 AD — not 1983/1984 from arithmetic alone.
Verifying against your passport
If you already have a Nepali passport, your AD date of birth is printed there. Cross-check the converter result against your passport DOB. If they differ, the passport is the legal record — report the discrepancy to the issuing authority rather than guessing.
Recording the full date for forms
International forms typically want the date in one of these formats: DD/MM/YYYY, MM/DD/YYYY, or YYYY-MM-DD (ISO). Once you have the AD year, month and day from the converter, format accordingly. Never omit leading zeros (e.g. write 03/04/1990, not 3/4/1990).