Tools & Guides15 min readSmart Calculator Team

Complete Guide to Nepali Date Converter: BS to AD & AD to BS Conversion

Master the art of converting between Bikram Sambat (BS) and Gregorian (AD) calendars with our comprehensive guide. Learn tools, techniques, and best practices for accurate date conversion.

Date Conversion
Nepali Calendar
Tools
Programming

Introduction to Nepali Date Conversion

Nepal uses the Bikram Sambat (BS) calendar as its official calendar system, while most of the world operates on the Gregorian (AD) calendar. This creates a constant need for date conversion in various scenarios - from filling out international forms to scheduling global meetings.

The Bikram Sambat calendar, established by King Vikramaditya, is approximately 56-57 years ahead of the Gregorian calendar. However, the conversion isn't as simple as adding or subtracting years due to different month lengths, leap year rules, and starting dates.

Global Usage

Essential for international business, travel documents, and global software integration.

Daily Life

Used in government forms, academic applications, and official documentation.

Development

Critical for software developers creating applications for Nepali users.

Understanding the Two Calendar Systems

Bikram Sambat (BS) Calendar
The official calendar of Nepal

Key Features:

  • • Started in 57 BC by King Vikramaditya
  • • 12 months with varying days (29-32)
  • • New Year starts in mid-April
  • • Lunar-solar calendar system

Month Names:

1. Baisakh7. Kartik2. Jestha8. Mangsir3. Ashadh9. Poush4. Shrawan10. Magh5. Bhadra11. Falgun6. Ashwin12. Chaitra
Gregorian (AD) Calendar
The international standard calendar

Key Features:

  • • Introduced by Pope Gregory XIII in 1582
  • • 12 months with fixed days (28-31)
  • • New Year starts on January 1st
  • • Solar calendar system

Leap Year Rule:

  • • Divisible by 4: Leap year
  • • Divisible by 100: Not leap year
  • • Divisible by 400: Leap year
  • • February has 29 days in leap years

Best Online Conversion Tools

Here are the most reliable and user-friendly tools for converting between BS and AD dates:

Smart Calculator BS/AD Converter
Free

Features:

  • Bidirectional conversion
  • Mobile-friendly
  • Offline capable
  • No ads

Frequently Asked Questions

What is the difference between BS and AD calendars?

BS (Bikram Sambat) is the official calendar of Nepal, starting from 57 BC. AD (Anno Domini) is the Gregorian calendar used worldwide. BS is approximately 56-57 years ahead of AD.

Why do we need to convert between BS and AD?

Conversion is essential for international communication, official documents, travel, business transactions, and when using global software systems that primarily use the Gregorian calendar.

Are online converters accurate?

Most reputable online converters are highly accurate for dates within their supported range. However, always verify important dates using multiple sources, especially for historical dates.

Can I convert historical dates before 1943?

Yes, but accuracy may vary. Most converters work well for dates after 1943 AD (2000 BS). For earlier dates, consult historical calendar references.

How do I handle time zones in conversion?

Date conversion typically doesn't involve time zones as it's about calendar systems, not time. However, when dealing with timestamps, consider Nepal Time (UTC+5:45).

Ready to Convert Dates?

Now that you understand the intricacies of Nepali date conversion, put your knowledge to practice with our free, accurate conversion tools.