Nepali BS & AD Engine

Precise Nepali Age Calculator

Convert your birth date between Bikram Sambat (BS) and Gregorian (AD) to compute your exact age in years, months, and days. Built for Lok Sewa candidates, citizenship applicants, and students.

Verified Calendar Data (2000–2090 BS) Last updated: September 2026 15,000+ Calculations

Quick Guide

How to Calculate Your Age

Three easy steps to calculate your exact age down to hours and minutes.

01 📅

Pick Calendar

Choose Bikram Sambat (BS) for Nepali documents or Gregorian (AD) for international records.

02 ✍️

Enter DOB

Select your year, month, and day from the dropdowns or type them directly using custom input.

03 ⚡

Get Breakdown

Instantly view your completed years, months, days, weekday of birth, and birthday countdown timer.

Calendar Reference

Nepali (BS) vs English (AD) Months

Month length variations and seasonal alignment across both calendar systems.

BS Month	Nepali Name	AD Equivalent	Days (Varies Annually)
Baisakh	बैशाख	Mid-April to Mid-May	30–31
Jestha	जेठ	Mid-May to Mid-June	31–32
Ashad	असार	Mid-June to Mid-July	31–32
Shrawan	साउन	Mid-July to Mid-August	31–32
Bhadra	भदौ	Mid-August to Mid-September	31–32
Ashwin	असोज	Mid-September to Mid-October	30–31
Kartik	कात्तिक	Mid-October to Mid-November	29–30
Mangshir	मंसिर	Mid-November to Mid-December	29–30
Poush	पुस	Mid-December to Mid-January	29–30
Magh	माघ	Mid-January to Mid-February	29–30
Falgun	फागुन	Mid-February to Mid-March	29–30
Chaitra	चैत	Mid-March to Mid-April	30–31

Astronomical Mechanics

Why BS Age Calculation Needs Precision

Why subtracting 56 or 57 years from your birth year fails official government eligibility tests.

Solar-Sidereal Transit Shifts

In the Gregorian calendar, month lengths are permanently fixed (30 or 31 days, with February having 28 or 29). In Bikram Sambat, month lengths are dictated by the sun entering each zodiac constellation (Sankranti). Depending on Earth's elliptical speed, Jestha or Ashad can have 31 or 32 days, while Kartik or Mangshir can be 29 or 30 days. Without verified historical tables (2000–2090 BS), approximations will miscount total elapsed days.

The "Borderline Day" Risk

For competitive examinations like Lok Sewa Aayog, Nepal Police, Armed Police Force, or Teacher Service Commission (TSC), age limits are enforced strictly down to the exact day. If a vacancy specifies an upper ceiling of 35 years as of the deadline, an approximation assuming 30 days per month could report you as eligible when you are actually 1 day over the limit. That 1-day error leads to immediate disqualification at verification.

Avoid Costly Errors

Common Mistakes When Converting Nepali Age

The four most frequent pitfalls students encounter when submitting official birth records.

01. BIRTHDAY DRIFT

Matching Dates

If you were born on Falgun 10, your English birthday does not fall on the same AD day every year. Leap years in the Western calendar shift the corresponding date by 1 to 2 days.

02. CUTOFF RULES

Calculating Today

Vacancies require age eligibility as of the last application deadline (दरखास्त दिने अन्तिम म्याद), not the day you sit down to fill the form. Always test the deadline date.

03. RUNNING YEAR

Informal Confusion

In Nepal people often say "म २४ वर्षमा हिँड्दैछु" (running 24). But legal forms strictly require completed age. If you are 23 years, 11 months, your legal completed age is strictly 23.

04. DISCREPANCY

SEE vs Nagarikta

If your Class 10 (SEE/SLC) certificate and Citizenship card differ, Nepal Civil Service rules give legal precedence to the date of birth listed on your primary school certificate.

Calendar Foundations

BS Age vs AD Age Explained

Understanding the chronological relationship between the two official calendars.

The Timeline Gap

56.7 Years Ahead

Bikram Sambat was founded in 57 BCE by King Vikramaditya. Therefore, BS is roughly 56 years, 8 months, and 15–17 days ahead of Gregorian AD. Between Jan 1 and mid-April (Baisakh 1), the year difference is 57; for the rest of the year, it is 56.

Elapsed Lifetime

Biological Age Is Identical

Your body ages at the exact same physical rate regardless of calendar notation. The total number of heartbeats, days (e.g. 8,245 days), and hours you have lived is identical in Kathmandu, London, or Sydney.

Practical Usage

When to Use Which

Use your BS age for Nepali government portals, Lok Sewa, TU registrations, and citizenship issuance. Use your AD age for international passports, US/Schengen visas, IELTS/TOEFL, and foreign university admissions.

Engine uses official astronomical panchang data authorized for Nepal government use.

Span: 2000 BS – 2090 BS

FAQ & Answers

Frequently Asked Questions

Common queries regarding Nepali date conversion, age limits, and documentation.

How old am I if I was born in 2050 BS?

If you were born in 2050 BS (approximately 1993 AD), you are around 33 years old in 2026. Use our calculator above for the exact calculation including completed months and days.

How is age calculated in the Nepali calendar (BS)?

Age calculation in BS involves converting the Nepali date to a standard Gregorian date (AD) and then calculating the exact difference down to days and hours. Our tool automates this conversion using historical Nepali calendar data (2000-2090 BS) to ensure astronomical precision.

What is the age limit for Lok Sewa Aayog exams?

The age limit for Lok Sewa Aayog government job exams in Nepal is strictly 18 to 35 years for male candidates and 18 to 40 years for female and disabled candidates as of the last day of application submission. Always check the vacancy deadline date.

At what age can I get a Nepali citizenship (Nagarikta)?

You become eligible for Nepali Citizenship at 16 completed years of age. Our calculator helps you verify your completed age accurately for Nagarikta or National ID Card registration.

How do I calculate age for a driving license in Nepal?

For a motorcycle or scooter license (Category A/K) in Nepal, you must be fully 16 years old. For cars and light vehicles (Category B), the requirement is 18 years, and for heavy transport it is 21+. Enter your birth date in our calculator to verify eligibility instantly.

Why does my age calculation differ on different websites?

Most tools approximate days in a month (assuming 30 or 30.4 days). However, the BS calendar has varying days each year (29 to 32 days). Our algorithm uses official Nepal Government Rajpatra data (2000–2090 BS) to determine the exact days in every month.

What date of birth takes precedence if my SEE certificate and Nagarikta differ?

Under Nepal Civil Service Rules, if there is a discrepancy between your Citizenship certificate and your primary academic document (SLC/SEE Certificate), the date on your SEE certificate is officially recognized by Lok Sewa Aayog.

How many days are in a Nepali month?

Nepali months in the Bikram Sambat calendar have varying lengths: 29, 30, 31, or 32 days depending on the year. Unlike the Gregorian calendar which is fixed, BS months change based on solar-sidereal transit (Sankranti).

Can I calculate my age from BS to AD?

Yes, our calculator supports both BS and AD inputs and provides results in a universal format of years, months, and days, regardless of the starting calendar.

What is the difference between BS and AD age?

BS (Bikram Sambat) is approximately 56.7 years ahead of AD (Anno Domini/Gregorian). However, your biological age (total days and seconds lived) is identical in both systems; only the calendar representation changes.