Hebrew Calendar Converter

Results
Hebrew Date
8 Shevat 5786
Hebrew Weekday
Monday
Gregorian
Monday, January 26, 2026
ISO
2026-01-26

Notes: Hebrew months include Adar I / Adar II in leap years. If a specific Hebrew date is not found (e.g., using Adar II in a common year), the converter will show no result.

Hebrew Calendar Converter - Complete Guide

Table of Contents

Introduction

The Hebrew Calendar Converter is a simple yet powerful tool that bridges the difference between the Hebrew and Gregorian calendars. It helps users quickly find the Hebrew date equivalent of any Gregorian date, or vice versa.

Designed with accuracy in mind, this converter relies on astronomical and historical data to provide correct results. Whether for cultural observance or research, the tool ensures clarity and precision.

Many communities follow the Hebrew calendar to track holidays, ceremonies, and historical events. Having an efficient converter allows them to stay synchronized with the modern Gregorian calendar effortlessly.

How It Works

The conversion process uses standardized date algorithms. When a Gregorian date is entered, it’s translated using the lunisolar Hebrew system, which balances both the moon's phases and the solar year.

For Hebrew-to-Gregorian conversions, the converter matches the day, month, and year by iterating through known calendar cycles. It adjusts automatically for leap years and the extra Adar II month.

Users can choose the input direction easily — either convert from Gregorian to Hebrew or Hebrew to Gregorian. Both methods provide instant, reliable results without needing additional calculations.

Conversion Principles

The Hebrew calendar follows a 19-year cycle, including 7 leap years. Each leap year contains an additional month to align with the solar year. This ensures holidays fall within their intended seasons.

The Gregorian calendar, in contrast, is purely solar. It accounts for leap years by adding one extra day every four years. Understanding these principles is crucial for accurate date conversions.

The converter aligns both systems through a combination of numerical rules and time-based cycles, creating a consistent one-to-one mapping between calendar days.

Conversion Formula

Though the Hebrew calendar formula is intricate, it can be expressed in an approximate form that illustrates how lunar months and solar years are synchronized.

Hebrew Year = Gregorian Year + 3760
Lunar Offset = (Months × 29.53059)
Leap Year Adjustment = Add Adar II when (Year % 19) ∈ [3, 6, 8, 11, 14, 17, 19]

This simple representation shows how an extra month is added periodically to maintain the balance between lunar and solar cycles. It’s a compact view of an otherwise detailed astronomical calculation.

Examples

Here are five examples to help you understand how the converter works in practical scenarios.

  • January 1, 2025 → 10 Tevet 5785
  • April 15, 2025 → 16 Nisan 5785
  • September 10, 2025 → 18 Elul 5785
  • October 5, 2025 → 3 Tishri 5786
  • December 25, 2025 → 5 Tevet 5786

These examples highlight the Hebrew months and how they shift each Gregorian year. The lunisolar balance means the same Hebrew date will not always match the same Gregorian day.

Applications of the Converter

The converter is used in various contexts, including religious observance, genealogy research, and academic studies. It helps individuals connect with history through precise date alignment.

Businesses and institutions also rely on such tools to plan events corresponding with traditional Hebrew holidays. This ensures respect for cultural timelines.

Historical Context

The Hebrew calendar dates back thousands of years, making it one of the oldest continuously used systems. It integrates both lunar and solar aspects to maintain agricultural and festival cycles.

The Gregorian system was introduced in 1582 to correct inaccuracies in the Julian calendar. Both systems now coexist, serving different cultural and religious communities worldwide.

Comparison Table

AspectHebrew CalendarGregorian Calendar
TypeLunisolarSolar
Months12 or 1312
Days in Month29 or 3028 to 31
Leap AdjustmentAdd extra monthAdd extra day
Year Length353–385 days365 or 366 days
EpochCreation (Year 1)Birth of Christ
Example Year57862025

Cultural Significance

The Hebrew calendar defines key Jewish holidays such as Passover, Rosh Hashanah, and Yom Kippur. These dates are deeply embedded in cultural traditions and religious observances.

Converting between calendars allows followers to plan these observances accurately, aligning ancient traditions with modern civil timelines.

Lunar vs Solar Calendar Table

FactorLunar CalendarSolar Calendar
BasisMoon’s cycleSun’s position
Cycle Length~354 days~365 days
AdjustmentsExtra monthExtra day
StabilityLess stableMore stable
ExamplesHebrew, IslamicGregorian
UsageReligiousCivil
AlignmentSeasonal drift possibleSeasonally fixed

Practical Use Cases

People commonly use the converter to find birth anniversaries, memorials, or holiday dates. It provides a fast, dependable reference for aligning two distinct calendars.

Schools, scholars, and researchers use it for chronological studies, particularly in biblical archaeology and Jewish history.

Hebrew Month Details

MonthDuration (Days)Notes
Tishri30Begins the new year
Heshvan29 or 30Varies to balance year
Kislev29 or 30Contains Hanukkah
Tevet29Winter month
Shevat30Seasonal change period
Adar29 or 30Purim celebration
Nisan30Passover begins

Conclusion

The Hebrew Calendar Conversion Tool offers remarkable accuracy and cultural relevance. It connects timekeeping traditions across thousands of years in one intuitive interface.

From religious observance to academic research, this tool bridges heritage with modern practicality. It represents the perfect blend of technology and tradition for everyday use.