BS Age Calculator
Enter your date of birth in Bikram Sambat or AD and get your exact age in both calendars, a countdown to your next birthday, and a few fun facts along the way.
Date of birth — Bikram Sambat (BS)
Date of birth — AD (English)
Just for fun
Roughly heartbeats and about days asleep so far.
Birthdays you've had if you lived on other planets:
About this calculator
Age is worked out the way people count it by hand — whole years, then whole months, then the leftover days — using the same Bikram Sambat calendar table as our BS to AD date converter. Enter either calendar; the other fills in automatically.
BS age calculator – frequently asked questions
How does this calculator find my age from a BS date of birth?
Enter your birth date on the Bikram Sambat (BS) side using the same calendar table as our BS to AD date converter. It converts your birth date to AD internally, compares it with today's date in Nepal, and works out your exact age in both calendars at the same time.
Why does my BS age differ slightly from my AD age?
Bikram Sambat months don't line up with Gregorian months, so partway through the year your BS age and AD age can show a different number of months or days even though the year is usually the same or one apart. Both are shown so you can use whichever your document or form asks for.
Can I enter my birth date in AD (English calendar) instead?
Yes. Fill in the AD side with your Gregorian date of birth and the BS side fills in automatically — enter either one.
How is the age shown — years, months and days?
The calculator finds the difference between your birth date and today the way people count age by hand: whole years first, then whole months, then the remaining days, borrowing from the previous month's length where needed. This is standard calendar age, not just total days divided out.
What is the countdown to my next birthday?
It shows the number of days left to your next BS birthday (based on your BS date of birth) and separately to your next AD birthday, so you can see both even when they fall on different days.
Are the 'birthdays on other planets' and heartbeat numbers accurate?
They're for fun, not medical or scientific use. Planetary birthdays use each planet's real orbital period, and heartbeats/sleep are rough estimates from typical averages, so treat them as playful facts rather than precise figures.
Supports birth dates roughly AD 1943–2034 (BS 2000–2090). Always double-check ages used in legal or official documents.