Expiration Date Code Converter

Why Food Date Codes Look Like This

Manufacturers print expiration and "best by" dates in whatever format their production-line software outputs, and that format varies by company and country. A code like 230115 could mean January 15, 2023 read as YYMMDD — but without knowing the manufacturer's convention, the same six digits could just as easily be misread with the day and month swapped. This tool checks whatever you type against the common patterns (YYMMDD, YYYYMMDD, Julian day-of-year codes, month-abbreviation formats like JAN152023) and returns whichever interpretation produces a valid date.

Julian Date Codes, Explained

Julian date codes, common on canned and shelf-stable packaged foods, aren't calendar dates at all — they're a year digit followed by a day-of-year count. The code 23015 means year 2023, day 15 of that year, which works out to January 15. Day 100 of a non-leap year would be April 10. This format trips people up because it looks like a regular date code but isn't structured like one.

Reading the Results

Once a code converts, the tool shows the same date in eight formats side by side — including ISO (YYYY-MM-DD), US order (MM/DD/YYYY), and international order (DD/MM/YYYY) — plus a status line noting whether the date has passed, is today, or falls within the next 30 days. Comparing formats side by side matters because mixing up US and international date order is one of the most common ways people misread a food date.

What It Can't Tell You

The converter reads the code you type in; it can't scan a photo of a label, and it can't tell you whether a product is actually safe to eat past its printed date — many shelf-stable foods remain fine well beyond a "best by" date, since that's a quality estimate rather than a safety cutoff. The tool only recognizes dates between 1900 and 2100 and won't guess at a format it doesn't already know.