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Nepali BS to AD Date Converter — Bikram Sambat to Gregorian | LazyTools
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Nepali BS to AD Date Converter — Bikram Sambat to Gregorian

Convert any Nepali Bikram Sambat (BS) date to its Gregorian (AD) equivalent — and any Gregorian date back to BS. The result shows the Nepali month in English and Devanagari script, the approximate Gregorian date in three formats, and the day of the week. Furthermore, a clear accuracy note reminds users that exact BS day conversions require the official Nepali Patro (almanac) due to variable month lengths.

BS → Gregorian primaryDevanagari month namesBoth directionsDay of week shownOfficial Patro note

How to use the Nepali BS to AD Converter

1
Enter the BS year, month and day
Type the Bikram Sambat year, select the month (with Devanagari name shown) and enter the day. Furthermore, the fields default to a recent BS date for immediate use.
2
Click Convert to Gregorian
The stat strip shows the approximate Gregorian date and day of week. Furthermore, the table shows the Gregorian date in long form, ISO format and DD/MM/YYYY — all three formats useful for different international documents.
3
Note the accuracy statement
The insight line at the bottom includes a reminder to verify with the official Nepali Patro. Furthermore, Bikram Sambat month lengths vary by 1 to 2 days each year — making this tool accurate to within about 2 days for most dates. Official documents require the exact day from the published Patro.
4
Convert Gregorian to BS
Click the AD → BS tab, enter any Gregorian date and click Convert. Furthermore, the approximate BS date appears with the Devanagari month name and the same accuracy note.
5
Use for document translation
BS dates appear on Nepali passports, birth certificates and land records. Furthermore, converting these to Gregorian is often required for international visa applications, foreign employer verification and university credential assessment.

When exact BS dates are needed

This tool provides approximate BS-to-Gregorian conversion accurate to within 1–2 days. Furthermore, the Bikram Sambat calendar has variable month lengths published in the official Nepali government Patro each year. For official purposes — visa applications, legal documents, court submissions. Passport offices — use the exact date from the published Patro.

Use caseThis tool sufficient?Recommendation
Quick reference and planningYes — within ±2 daysUse this tool directly
Verifying approximate Gregorian yearYes — always accurateUse this tool directly
Official visa or legal documentsNo — exact day neededVerify with official Nepali Patro
Nepali government recordsNo — official onlyConsult Government of Nepal calendar

How BS to Gregorian conversion works

The approximation uses the fixed average Gregorian start date for each BS month. Furthermore, the BS year converts to Gregorian by subtracting 56 from the BS year — a simplified calculation. Is accurate for the year level but approximate for the exact day.

Approximate Gregorian year = BS year − 56
1 Baishakh = approximately 13–14 April each Gregorian year
Month start offset = fixed average Gregorian start per month (varies ±1–2 days annually)
Exact conversion = requires official Nepali Patro lookup table
BS 2082 = approximately Gregorian 2025–2026

Worked example: converting a Nepali passport birth date

A Nepali citizen's passport shows date of birth as "15 Shrawan 2056 BS". Converting this for a UK visa application:

BS dateApproximate Gregorian equivalent
15 Shrawan 2056 BS31 July 1999
1 Baishakh 2082 BS~14 April 2025
30 Chaitra 2082 BS~12 April 2026
15 Shrawan 2056 BS corresponds approximately to 31 July 1999. Furthermore, the Shrawan month typically starts around 16 July in the Gregorian calendar. For official UK visa purposes, verify the exact birth date with the Nepali passport office or official Nepali Patro for 2056 BS.

Why BS dates appear on Nepali documents

Nepal uses Bikram Sambat as its official civil calendar. Furthermore, all Nepali government documents — passports, birth certificates, citizenship cards, educational certificates, court records. Land titles — carry BS dates as the primary date.

The BS year is approximately 56 to 57 years ahead of the Gregorian year. Furthermore, a date in BS 2082 corresponds to approximately 2025 or 2026 in the Gregorian calendar — not thousands of years in the future. The large number might suggest to someone unfamiliar with the calendar. Moreover, understanding this offset immediately contextualises any BS date encountered in Nepali documentation.

The Nepali Patro — authoritative calendar source

The official Nepali Patro (पात्रो) is published annually by the Government of Nepal. Furthermore, it specifies the exact day count for each BS month, the exact Gregorian date for each 1st of a BS month and all Nepali public holidays and festivals. Moreover, the Patro is also available. A mobile app — making it accessible for Nepali communities worldwide who need exact BS calendar information.

When BS to Gregorian conversion is needed

Visa processing for Nepali nationals regularly requires date conversion. Furthermore, UK, US, Canadian, Australian and Gulf country embassies processing Nepali passport applications must convert BS birth dates and document dates to Gregorian. Moreover, HR teams hiring Nepali nationals for positions requiring background checks need to translate BS dates on educational certificates and employment records.

Universities admitting Nepali students require Gregorian dates for academic records. Furthermore, educational certificates from Nepali schools and universities carry BS dates — certificate issue dates, examination dates and graduation dates all use BS. Moreover, credential evaluation agencies verifying Nepali qualifications for international recognition need accurate BS-to-Gregorian conversion.

Nepali workers in Gulf countries

Nepal is one of the largest sources of migrant workers for Gulf countries — particularly Qatar, UAE, Saudi Arabia and Kuwait. Furthermore, these workers carry Nepali documents with BS dates that must be converted for Gulf employment contracts, health insurance, residency permits and exit paperwork. Moreover, Gulf HR teams and recruitment agencies handling Nepali worker documentation benefit directly from quick BS-to-Gregorian conversion tools.

Frequently asked questions

The tool is accurate to within 1 to 2 days for most dates. Furthermore, the exact BS month lengths vary by 1 to 2 days each year because they are recalculated annually in the official Nepali Patro based on astronomical calculations. For planning and reference purposes, the tool's approximation is entirely adequate. For official documents, verify with the exact Patro table for the relevant BS year.
BS 2082 corresponds to the Gregorian period from approximately 14 April 2025 to 13 April 2026. Furthermore, any specific date within BS 2082 converts to the corresponding period in 2025 or early 2026 (minus approximately 56 years from the BS year). The tool calculates the approximate Gregorian date for any day within BS 2082.
The official Nepali government Patro is available from the Government of Nepal's website and through various Nepali Patro mobile applications. Furthermore, many Nepali community organisations and Nepali embassies abroad maintain physical copies of the current year's Patro. Moreover, the Hamro Patro and Nepal Patro apps are widely used digital versions of the official almanac available for iOS and Android devices.
Discrepancies between Nepali passport birth dates and other records often arise from BS-to-Gregorian conversion errors or from the variable month lengths in different years' Patro tables. Furthermore, some older conversions used slightly different Patro data or rounded approximations. Moreover, birth dates recorded in rural areas before digital Patro access was widespread may have used approximate conversions that later proved to be 1 to 2 days off from the official calculation.
Yes — but it requires the complete lookup table of day counts for each BS month, published annually in the Nepali Patro. Furthermore, this table is not a formula but a precomputed set of values that varies year by year. Libraries like nepali-date-js and similar open-source projects maintain these lookup tables for programmatic use. Moreover, this tool uses the best algorithmic approximation available without the full lookup table — accurate to within 1 to 2 days for practical use.

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