Hebrew–Gregorian Converter

A TypeScript/JavaScript library for converting between Gregorian and Hebrew calendar dates using @hebcal/core.

Features

• Gregorian → Hebrew conversion
• Hebrew → Gregorian conversion
• Hebrew numerals (Gematria)
• Flexible Hebrew month parsing
• Leap year support

Installation

npm install hebrew-date-converter @hebcal/core

Usage

import { toGregorian, toHebrew } from "hebrew-date-converter";

toGregorian("תשפד", "טבת", "יא");

toHebrew("2026-01-01");

API

toGregorian(yearStr, monthStr, dayStr)

Converts Hebrew date → Gregorian date.

Parameters:

• yearStr: string
• monthStr: string
• dayStr: string

Returns: { year: number; month: number; day: number; }

Example: toGregorian("תשפד", "טבת", "יא");

toHebrew(date)

Converts Gregorian → Hebrew date.

Parameters:

• date: Date | string

Returns: { year: string; month: number; monthName: string; day: string; label: string; }

Example: toHebrew("2026-01-01");

Supported Hebrew Months

ניסן, אייר, סיוון, תמוז, אב, אלול, תשרי, חשוון/חשון, כסלו, טבת, שבט, אדר (א/ב)

Notes

• Built on @hebcal/core
• Handles Hebrew punctuation variants
• Leap years supported automatically

License

MIT