Persian Calendar Converter

About This Tool

The tool provides accurate conversion from Jalali dates to Gregorian dates. It models the Jalali calendar, applies leap-year logic, and outputs Gregorian dates in ISO format. It is designed for analysts, developers, and project planners who need consistent cross-calendar data across Iran, Afghanistan, and global contexts. The system reasons about year range, handles invalid inputs gracefully, and offers optional day-of-week results for downstream scheduling or data enrichment.
Conceptually, a Jalali date is mapped to a Julian Day Number and then translated to a Gregorian date; this two-step approach preserves calendar continuity and historical alignment. Users benefit from deterministic results, auditable logic, and integration-ready outputs for databases and analytics pipelines.
Core value lies in reliability, precise handling of month lengths, and robust validation that reduces data drift when ingesting multi-calendar datasets.

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