There are situations in Nepal where knowing your age to the exact day genuinely matters. A Lok Sewa Aayog application with an age cutoff. A job form that says “must not have completed 35 years as of Ashad End.” A bank form asking for date of birth in BS while your citizenship shows a date you’ve only ever thought about in AD. A DV Lottery asking for your DOB in MM/DD/YYYY format when you know it only in Nepali.

In all of these moments, a rough age isn’t good enough.

This Age Calculator Nepali calculates your exact age — down to the day — in both the Bikram Sambat (BS) and Gregorian (AD) calendar systems. It also gives you your age in total months, weeks, hours, minutes, and seconds, and shows your next birthday countdown in whichever calendar you’re using.

No mental math. No conversion guesswork. Just the accurate number.

What Is a Nepali Age Calculator?

A Nepali Age Calculator is a tool that calculates how old you are using dates from the Bikram Sambat calendar — Nepal’s official calendar — rather than (or in addition to) the Gregorian AD calendar. Most age calculators online work only with AD dates. This one supports both.

You can enter your date of birth in BS and calculate your current age in BS. You can also use the AD mode for a standard Gregorian age calculation. Both modes give the same level of detail: years, months, days, plus the full breakdown in weeks, approximate hours, minutes, and seconds.

This is the only type of age calculator that makes complete sense for Nepal, where official documents, government deadlines, and daily life operate on the BS calendar.

How to Use the Age Calculator

AD Mode (Gregorian / English Calendar)

1. Select the AD — Gregorian tab.
2. Enter your Date of Birth — the day, month, and year in the Gregorian calendar.
3. The Age at the Date field defaults to today’s date. Leave it as is to calculate your current age, or change it to calculate your age on a specific future or past date.
4. Click Calculate Age.

Your results appear instantly: exact age in years, months, and days — and the full breakdown below.

BS Mode (Bikram Sambat / Nepali Calendar)

1. Select the BS — Bikram Sambat tab.
2. Enter your Date of Birth BS — the Nepali year, month (Baisakh through Chaitra), and day.
3. The Age at the Date BS field defaults to today’s Nepali date. Change it if you want age on a specific BS date.
4. Click Calculate Age (BS).

The BS calculator uses verified month-length data for BS 2000 through 2090, covering dates from AD 1943 to AD 2033. If your date of birth falls within this range, the calculation will be accurate.

What the Results Show

Exact Age in Years, Months, Days

This is the main result — your precise age as of today or the date you specified. For example: 27 years, 4 months, 18 days. This is the format most official forms ask for when they want age “as of” a specific date.

In Months

Your total age expressed purely in months. A person who is 27 years and 4 months old has lived approximately 328 months. This figure is occasionally requested in medical contexts.

In Weeks

Total complete weeks lived. Useful for pediatric age references and occasionally for specific administrative calculations.

Total Days

The exact number of days you have been alive from your date of birth to the calculation date. This is the most precise single-number age representation possible.

Approximate Hours, Minutes, Seconds

These are calculated from total days and are approximations — they assume an average without accounting for daylight saving time changes (which Nepal doesn’t observe, making the approximation cleaner here than for many countries). These are mostly interesting rather than administratively useful, but they give a concrete sense of scale.

Next Birthday Countdown

The calculator shows how many days remain until your next birthday in whichever calendar mode you’re using. In BS mode, this counts to your next Nepali birthday (same Nepali date next year). In AD mode, it counts to your next Gregorian birthday.

Why Two Calendar Modes Matter in Nepal

This is not a feature added for novelty. It reflects a genuine daily reality for millions of Nepalis.

The Official Records Problem

Nepal’s official documents exist in two worlds. Citizenship certificates (Nagarikta) issued by district offices use BS dates. Passports issued by the Department of Passport use AD dates. Bank accounts may use either. School certificates sometimes use BS, sometimes AD, sometimes both. When you need to verify your age across multiple documents, inconsistencies create real problems — especially if a manual conversion was done incorrectly somewhere along the way.

Being able to calculate age independently in both systems lets you cross-check your own records and catch discrepancies before they become problems at a counter or a border.

Lok Sewa and Government Job Age Limits

Public Service Commission (Lok Sewa Aayog) job advertisements in Nepal state age limits in BS — typically something like “must not have exceeded 35 years by the last date of application.” The last date is a BS date. Your age on that date is calculated in BS. If you’re working from an AD date of birth and calculating in Gregorian, you risk miscalculating by days or even a month, which could mean wrongly believing you’re eligible — or wrongly believing you’re not.

The BS mode of this calculator handles this precisely: enter your BS date of birth, set the calculation date to the Lok Sewa deadline (in BS), and get your exact BS age on that date.

Visa and Foreign Application Age Requirements

When Nepali citizens apply for foreign visas, DV Lottery, or study abroad programs, all age-related fields use AD dates. If you only know your birth date in BS — as many older Nepalis and those born in rural areas do — you need an accurate BS-to-AD conversion before you can even begin.

The AD mode of this calculator works with Gregorian dates directly. If you’ve already converted your BS birth date to AD using our Date Converter, you can then calculate your exact AD age here and use that number with confidence on international forms.

Age Calculation in BS — How It Works

Calculating age in Bikram Sambat is not as simple as subtracting years. BS months have variable lengths — anywhere from 29 to 32 days — that change from year to year. There is no fixed rule like “Baisakh always has 31 days.” This means that simply subtracting the birth year from the current year gives you the right year count but can easily give you the wrong month or day count if you try to do it manually.

The calculator uses a complete lookup table of BS month lengths for every year from BS 2000 to BS 2090. It counts actual days between your birth date and the target date, then converts that day count back into years, months, and days in BS format — accounting for the exact number of days in each BS month in each specific year.

This is why the result is genuinely accurate rather than approximate.

The 12 Months of Bikram Sambat

For reference, here are the 12 months of the Nepali calendar in order, with their approximate Gregorian counterparts:

The BS year begins with Baisakh 1, which falls around April 13–14 in AD. So the Nepali New Year falls in mid-April of each year.

Common Use Cases for a Nepali Age Calculator

Lok Sewa Aayog applications — Calculate exact BS age as of the application deadline to verify eligibility for age-limited government positions.

Retirement age verification — Government employees in Nepal have retirement ages set in BS. Calculating the exact date of completion of age 58 or 60 in BS matters for pension processing.

Citizenship and NID applications — Some documentation processes require age as of a specific BS date.

School admission age cutoffs — Public school admissions in Nepal have age cutoffs set in BS. Parents often need to know whether a child has or hasn’t completed a specific age by Baisakh 1 of a given year.

DV Lottery eligibility — The US Diversity Visa Lottery requires the principal applicant to be at least 18 years old. Calculating this in AD from a BS birth date needs an accurate conversion and exact age check.

Medical records — Hospitals and clinics in Nepal increasingly record ages in both BS and AD. Knowing your exact age in both systems helps when moving between public and private healthcare providers.

Curiosity — Plenty of people just want to know exactly how many days old they are. The total days and approximate seconds results are there for exactly this reason.

AD vs BS — A Quick Reference

Frequently Asked Questions

How do I calculate my age in Nepali (BS)? Select the BS — Bikram Sambat tab, enter your date of birth in the Nepali calendar (year, month, day), leave the “Age at the Date BS” field as today’s date, and click Calculate Age (BS). Your exact age in years, months, and days in the BS calendar will appear instantly.

What is the difference between BS and AD age? There is no difference in your actual age — you are the same age regardless of which calendar you use. The difference is in how the date is expressed. Your BS birth date and your AD birth date refer to the same moment in time, just recorded in different calendar systems. The age calculation in BS counts time using BS month lengths; the AD calculation uses Gregorian month lengths.

Why does Nepal use the BS calendar? Bikram Sambat is Nepal’s official civil calendar, established by law. It is used for all government records, legal documents, official notifications, and the school year. It is also the calendar used for scheduling Hindu festivals and auspicious dates. Nepal is one of the few countries in the world to use a non-Gregorian calendar for official civil purposes.

How do I find my BS date of birth if I only know my AD date? Use our Date Converter to convert your AD birth date to BS. Once you have the BS date, come back to this calculator and use BS mode to calculate your Nepali age.

Can I calculate age for any date, not just today? Yes. The “Age at the Date” field (in both AD and BS modes) can be changed to any date. This lets you calculate your age as of a past date (useful for checking eligibility for something that has already closed) or a future date (useful for planning ahead for an age cutoff).

What is the BS calendar date range this calculator covers? The BS mode covers BS 2000 through BS 2090, corresponding to approximately AD 1943 through AD 2033. Most people’s date of birth and any near-future date will fall within this range.

How accurate is the BS age calculation? Very accurate. The calculator uses a verified lookup table of exact day counts for every month in every BS year from 2000 to 2090, rather than estimating. It counts actual days between two dates and converts that count back into years, months, and days in BS format.

Is this calculator useful for Lok Sewa Aayog age limits? Yes — this is one of its primary use cases. Enter your BS date of birth in BS mode, change the “Age at the Date BS” to the last date of the Lok Sewa application (in BS), and click Calculate. The result shows your exact age on that date, which you can compare directly to the stated age limit.

Also useful: Date Converter to convert between BS and AD dates, and Salary Tax Calculator for Nepal income tax calculation.