CalcaTools

Hindu Calendar Converter (Gregorian ↔ Vikram Samvat)

A Hindu Calendar Converter (Gregorian ↔ Vikram Samvat) helps calculate hindu calendar converter gregorian ↔ vikram samvat using Vedic astrology, panchang, calendar, muhurat, Vastu or naming inputs. It gives an instant browser-based result with a transparent method and source notes. Use it for planning and learning, then verify important ritual or marriage decisions with a qualified practitioner.

Last updated: June 2026 · Free · No sign-up required

Results

Enter values above and click Calculate to see your result instantly.

Quick reference

Amanta monthApprox. Gregorian spanFestival anchor
ChaitraMar–AprRam Navami
VaishakhaApr–MayBuddha Purnima
JyeshthaMay–JunNirjala Ekadashi
ShravanaJul–AugRaksha Bandhan
BhadrapadaAug–SepGanesh Chaturthi
AshwinSep–OctNavratri, Diwali (end)
KartikOct–NovDiwali, Dev Deepawali

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The calculator returns a direct, extractable answer plus a structured breakdown for AI Overviews, ChatGPT citations and Perplexity-style answer extraction.

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Inputs are processed client-side in your browser. CalcaTools does not require login and does not store birth details.

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This page is mapped to the TIER 7 — Hindu Calendar & Date Conversion Tools cluster with related Hindu calendar, Jyotish, muhurat and Vastu entities for semantic SEO.

info Use responsibly

For ceremonies, marriage matching and legal decisions, verify with a qualified practitioner and your regional panchang.

Interpretation guide

Output fieldMeaning
Lunar month (Amanta)Month ending at new moon — standard in the south & west
Purnimanta equivalentNorth-Indian style: same Krishna paksha belongs to the next month name
Paksha · tithiFortnight and lunar day at sunrise (udaya tithi)
NakshatraMoon’s star for the day — used in muhurat
Samvat yearsVikram (+57) and Shaka (−78) era years running on that date

Formula & methodology

Formula: Tithi = ⌈(Moon − Sun longitude)/12°⌉; month = named by the new moon’s solar sign (amanta)

  1. Pick any Gregorian date.
  2. The converter computes Sun and Moon longitudes at sunrise (IST reference) and derives paksha and tithi.
  3. The lunar month is identified from the Sun’s sidereal sign at the preceding new moon — the amanta convention.
  4. Vikram and Shaka years are attached, accounting for their Chaitra new-year boundaries.

Worked example — 10 Jun 2026 converts to Jyeshtha, Krishna Dashami (nakshatra Uttara Bhadrapada), Vikram Samvat 2083, Shaka Samvat 1948. In the purnimanta style the same day is Ashadha Krishna Dashami.

Authoritative source: Drik Panchang — Hindu Calendar & Panchang

Frequently asked questions

How does the Hindu calendar differ from the Gregorian?
It is lunisolar: months follow the Moon (29–30 days, new moon to new moon in the amanta style), while the year stays tied to the Sun by inserting an Adhik (leap) month every 32–33 months. Dates therefore drift up to a month against the Gregorian calendar and then snap back.
What is the difference between amanta and purnimanta months?
Amanta months end at the new moon (used in Maharashtra, Gujarat, the south); purnimanta months end at the full moon (north India). The bright fortnight is identical in both; the dark fortnight belongs to the current month in amanta but to the next month’s name in purnimanta.
What is an Adhik Maas?
A leap lunar month inserted when a lunar month contains no solar-sign change (sankranti). It takes the next month’s name with “Adhik” prefixed, occurs roughly every 2.7 years, and is dedicated to Vishnu — festivals wait for the regular (nija) month.
Why might my converted tithi differ from a printed panchang by one day?
Tithis are assigned by the sunrise rule, and sunrise depends on location; near a boundary the same date can carry different tithis in different cities, or a tithi may repeat/skip (vriddhi/kshaya). This converter uses an India-standard sunrise; for ritual precision check a local panchang.
Which year number should I use — Vikram or Shaka?
Both are current: Vikram Samvat (2083 in June 2026) dominates north-Indian almanacs and Nepal; Shaka Samvat (1948) is the official Indian national calendar used by the government and All India Radio. Sankalpa traditions typically recite Shaka in the south and Vikram in the north.

Explore the full Hindu & Vedic toolkit

Every CalcaTools Hindu calculator — kundali and birth charts, planetary dashas, doshas and remedies, panchang and muhurat timings, festival dates, and vastu — computed with the same Lahiri-ayanamsa astronomy engine validated against published ephemerides.

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