Date Format Converter
Pick a date to see it converted into every common written format at once — US, international, ISO 8601, and more.
How this is calculated
Nothing is inferred here — your date picker already tells the browser the exact year, month and day, so this tool only reformats that same calendar date nine different ways, from the numeric MM/DD/YYYY and DD/MM/YYYY conventions to compact, dot-separated and fully spelled-out forms. No timezone conversion or time-of-day is involved, since a calendar date and a specific instant in time are different things — for the latter, see the Unix Timestamp Converter.
Why date formats cause real mix-ups
MM/DD/YYYY (used in the US) and DD/MM/YYYY (used in most of the rest of the world) put the day and month digits in a different order, so any date where both the day and month are 12 or under is genuinely ambiguous without knowing which convention was used — 03/04/2026 could be March 4 or April 3, and there's no way to tell just by looking at it. That ambiguity is why ISO 8601 (YYYY-MM-DD) exists as a single unambiguous standard: putting the largest unit first means the format can only be read one way, which is why it's the default for databases, APIs, and most international paperwork.
Frequently asked questions
Why do MM/DD/YYYY and DD/MM/YYYY give different dates for the same digits?
Because the two formats swap the order of the day and month digits. A date like 03/04/2026 means March 4 in US format and April 3 in international format — same digits, two different actual calendar dates.
What's the safest format to use when writing to someone in another country?
ISO 8601 (YYYY-MM-DD), or spelling the month out in words. Both remove the day/month ambiguity entirely, which is why ISO 8601 is the standard format for computer systems, APIs, and most international business correspondence.
Does this tool handle time, not just the date?
No — this converts a calendar date between written formats only, with no time of day involved. For a specific date and time, or for a Unix timestamp, use the Unix Timestamp Converter instead.