Julian Date Converter
Looking for an easy way to convert dates to Julian day numbers — or the other way around?
Julian Date Converter
Use this tool to convert between Date → Julian (yyyy-ddd) Date and Julian Date → Date.
Date → Julian Date
Julian Date → Date
This simple Julian Date Converter helps you quickly:
- convert a regular calendar date to a Julian day (day of year), and
- convert a Julian day back into a standard calendar date.
It’s perfect for planning, work schedules, spreadsheets, manufacturing codes, logistics, or anytime you need a quick and reliable date conversion — without doing the math yourself.
Just enter a date (or a Julian day), and the result updates instantly.

RELATED POST: Julian Date Calendar (5 Printable Templates)
I hope this Julian Date Converter makes your planning a little easier 💛
Feel free to bookmark this page and come back anytime you need a quick date conversion.
If you’re someone who loves simple tools, printable calendars, and gentle ways to stay organized, you’ll find plenty of helpful (and pretty!) resources here on SaturdayGift.
Happy planning ✨
