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Hindu Calendar Converter | Convert 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.

How to use the Hindu Calendar Converter

Choose a Gregorian date and read the corresponding Hindu lunar month, tithi, paksha, Vikram Samvat, and Shaka Samvat. The result uses the stated amanta convention and sunrise reference.

  1. Select the Gregorian date you want to convert.
  2. Check the lunar month convention: amanta and purnimanta names can differ for Krishna paksha.
  3. For ceremonies, compare the result with a local panchang because sunrise location and regional practice can change the displayed tithi.

Important: Calendar conversion is regional. A local panchang or qualified practitioner should be used for ritual, marriage, and other time-sensitive decisions.

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.

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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

lightbulb Worked example

Let's say you are using the 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. Enter the values that match your situation into the input fields and press calculate — using realistic numbers makes the result directly useful for you.

Result: The calculator instantly applies the formula Tithi = ⌈(Moon − Sun longitude)/12°⌉; month = named by the new moon’s solar sign (amanta) and returns the result with appropriate precision.

What this means: Read the result in the context of what you are measuring. The step-by-step breakdown lets you confirm the math and understand which input most affects the outcome.

Formula & methodology

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

The Hindu Calendar Converter (Gregorian ↔ Vikram Samvat) is built on a well-established calculation method. It uses the formula Tithi = ⌈(Moon − Sun longitude)/12°⌉; month = named by the new moon’s solar sign (amanta) to turn your inputs into a reliable result. 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 The steps are shown on the page so you can follow the reasoning from input to output.

  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.
Why isn't Vikram Samvat simply the Gregorian year plus 57?
Because the years start in different months — Vikram Samvat begins with Chaitra (March/April), so the offset is +57 for roughly April–December but +56 for January–March. The tool handles the crossover automatically. That is also why one Gregorian year spans parts of two Samvat years.
What is a tithi, exactly?
A tithi is 1/30 of a lunar month — the time the Moon gains 12° on the Sun: tithi = ⌈(Moon − Sun longitude)/12°⌉. Because the Moon's speed varies, tithis range from about 19 to 26 hours, so one can start and end within a single civil day or span two. The converter shows the tithi prevailing at your date.
Amanta or Purnimanta — which month system is used?
The tool follows the amanta convention (months named by the new moon's solar sign), standard across most of South India and the national panchang framework. North Indian traditions often use purnimanta (full-moon ending months), which names the same period differently. If your family's calendar disagrees by a month, this convention difference is usually why.
Can it convert festival dates years ahead?
It converts the calendar framework reliably, but festival dates depend on precise tithi boundaries that shift with refined ephemerides — panchangs occasionally differ by a day. Use the tool for planning and year-mapping, and confirm the exact observance date against a published panchang for the relevant year.

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