Convert AD to BS and BS to AD instantly with this fast and accurate Nepali date converter. Supports all date formats with automatic detection, plus bulk conversion for hundreds of dates at once. Perfect for Nepali calendar users, developers, students, accountants, and official document preparation.
AD ↔ BS Date Converter
Convert dates between Gregorian (AD) and Bikram Sambat (BS) calendars
Converted to BS
AD to BS and BS to AD Bulk Date Converter to convert dates between the Gregorian (AD) and Nepali (Bikram Sambat) calendars instantly. This tool supports both individual and bulk date conversion, allowing you to convert hundreds of dates at once with complete accuracy.
The Nepali Bikram Sambat (BS) calendar is approximately 56 years and 8 months ahead of the Gregorian AD calendar. Our converter automatically detects common date formats including YYYY-MM-DD, DD/MM/YYYY, DD-MM-YYYY, YYYY.MM.DD, and DD.MM.YYYY. Convert up to 1,000+ dates at once in bulk mode for spreadsheets, datasets, bank transactions, government records, and more.
Supported conversion range: AD 1918–2100 and BS 1975–2157. Perfect for personal use, business records, academic research, legal documents, accounting systems, and Nepali date-based applications.
📖 How to Use This Converter
How to Use the Date Converter
- Select conversion type: Choose AD → BS or BS → AD.
- Enter your date: Use any format such as YYYY-MM-DD, DD/MM/YYYY, DD-MM-YYYY, MM/DD/YYYY, etc.
- Automatic date format detection: The tool identifies the format instantly.
- Use the date picker: Quickly select a date visually from the calendar.
- Instant conversion: Results appear immediately with accurate BS or AD output.
- Bulk conversion mode: Paste multiple dates (one per line) to convert hundreds at once.
- Copy or download results: Export results for Excel, CSV, reports, or documentation.
Supported Date Formats
- YYYY-MM-DD (2025-02-12)
- DD/MM/YYYY (12/02/2025)
- DD-MM-YYYY (12-02-2025)
- MM/DD/YYYY (02/12/2025)
- YYYY.MM.DD (2025.02.12)
- DD.MMM.YYYY (12-Feb-2025)
⚙️ How It Works
How the AD ↔ BS Conversion Works
The Bikram Sambat (BS) calendar, also known as Vikram Samvat, is Nepal\'s official calendar system. It runs approximately 56 years and 8 months ahead of the Gregorian calendar used worldwide.
Key Differences Between AD and BS
- BS 2081 corresponds to AD 2024/2025.
- BS months vary between 29–32 days.
- The Nepali New Year starts around mid-April (Baisakh 1).
- BS months: Baisakh, Jestha, Ashar, Shrawan, Bhadra, Ashwin, Kartik, Mangsir, Poush, Magh, Falgun, Chaitra.
Conversion Accuracy
Our engine uses official Nepali calendar data (BS 1975–2157) ensuring precise conversion for 180+ years of dates. The system handles leap years, variable month lengths, and historical changes in the Nepali calendar.
Frequently Asked Questions
Find answers to common questions
AD to BS conversion changes a date from the Gregorian calendar to the Nepali Bikram Sambat calendar. For example, AD 2025 converts to BS 2081 or BS 2082 depending on the month.
The Bikram Sambat system began 56.7 years earlier than the Gregorian calendar. This creates the year difference you see during conversion.
Yes. The bulk mode allows converting hundreds or thousands of dates instantly. Paste one date per line and the tool converts them all together.
Yes. The conversion is based on verified Nepali calendar data and is accurate for official forms, banking, government systems, academic records, and legal documents.
All common formats including YYYY-MM-DD, DD/MM/YYYY, DD-MM-YYYY, MM/DD/YYYY, YYYY.MM.DD, and DD.MMM.YYYY are supported. The tool auto-detects the format automatically.
The tool supports conversions from AD 1918 to 2100 and BS 1975 to 2157 — over 180 years of date coverage.
Yes, but the leap year rules differ from the Gregorian calendar. Month lengths vary dynamically between 29 to 32 days and are built into the converter.
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