// convert any date format in one click
Convert dates between any formats instantly — ISO 8601, Unix timestamp, US, EU, SQL, RFC 2822, and more. Free, browser-based, no sign-up required.
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Enter a date string and click ConvertPaste any date string, Unix timestamp, or click NOW for the current time. Nearly any format is accepted.
Choose your target timezone for the output. Defaults to UTC.
All common date formats are shown instantly. Click the copy icon next to any result.
Date Format Converter lets you instantly convert any date or timestamp into every common format used in development — ISO 8601, Unix, SQL, US, EU, RFC 2822, and more. No libraries, no sign-up, just paste and convert.
You can input almost any recognizable date string — ISO 8601 (2024-01-15T10:30:00Z), Unix timestamps (1705334400 or milliseconds 1705334400000), US dates (01/15/2024), EU dates (15/01/2024), RFC 2822, natural language like "January 15 2024", and many more.
A Unix timestamp is the number of seconds elapsed since January 1, 1970 00:00:00 UTC (the Unix Epoch). It's widely used in programming and databases because it's timezone-independent and easy to compare and calculate with.
ISO 8601 is an international standard for representing dates and times. The format looks like 2024-01-15T10:30:00Z. It's the preferred format for APIs, data exchange, and logging because it's unambiguous and sortable.
The tool parses your input date to a UTC moment, then formats it in all output formats. The timezone selector affects how the output is displayed — select your target timezone and all formats will reflect that offset.
Dates like "01/06/2024" are ambiguous — is it January 6th (US) or June 1st (EU)? Our parser uses context clues and the most common interpretation. For ambiguous dates, prefer unambiguous formats like ISO 8601 or natural language ("January 6, 2024").
Yes. If you paste a 13-digit number (like 1705334400000), the tool automatically detects it as milliseconds and converts accordingly. The output also includes a Unix milliseconds row for easy reference.
RFC 2822 is the date format used in email headers and HTTP responses, e.g., Mon, 15 Jan 2024 10:30:00 +0000. It's defined in the Internet Message Format specification and includes weekday, timezone offset, and readable month names.
Yes, completely free. No sign-up, no account, no limits. All processing happens in your browser — no data is sent to any server for the client-side conversion mode.
Working with dates in software development is one of those tasks that seems simple until you're knee-deep in timezone edge cases, ambiguous formats, and legacy timestamp values. Our Date Format Converter solves this by letting you paste any recognizable date string and instantly get the equivalent in every common format — ISO 8601, Unix timestamp, SQL DateTime, US, EU, RFC 2822, and more.
Modern software systems store, transmit, and display dates in dozens of different ways. An API might return ISO 8601 strings (2024-01-15T10:30:00Z), while your database stores SQL timestamps (2024-01-15 10:30:00), your logs use Unix timestamps (1705334400), and your UI shows a human-readable format like January 15, 2024. Converting between these formats manually is error-prone — especially across timezones.
ISO 8601 is the international standard for date and time representation, published by the International Organization for Standardization. A full ISO 8601 datetime looks like 2024-01-15T10:30:00+05:30 — date, separator "T", time, and UTC offset. The "Z" suffix means UTC (Zulu time). ISO 8601 is preferred for APIs and data interchange because it's unambiguous, sortable as a string, and globally understood.
Common ISO 8601 variants include: date-only (2024-01-15), datetime without timezone (2024-01-15T10:30:00), datetime with UTC (2024-01-15T10:30:00Z), and datetime with offset (2024-01-15T10:30:00+07:00).
A Unix timestamp (also called POSIX time or epoch time) is the number of seconds since January 1, 1970 00:00:00 UTC. This simple integer is timezone-independent and perfect for comparisons, arithmetic, and storage. For example, 1705334400 represents January 15, 2024 at 12:00 PM UTC.
Modern systems increasingly use Unix milliseconds (multiply seconds by 1000) for higher precision. JavaScript's Date.now() returns milliseconds. Our converter handles both — it auto-detects 13-digit numbers as milliseconds and 10-digit numbers as seconds.
One of the most common sources of date confusion is the US vs EU format ambiguity. In the United States, dates are written MM/DD/YYYY (month first), so January 6 is 01/06/2024. In Europe, the order is DD/MM/YYYY (day first), so June 1 is also written as 01/06/2024. The same string means completely different dates!
To avoid ambiguity in international systems, always prefer ISO 8601 or write the month as a word ("Jan 6, 2024"). Our converter outputs both US and EU formats so you can quickly see both interpretations.
Most SQL databases (MySQL, PostgreSQL, SQLite, SQL Server) use the format YYYY-MM-DD HH:MM:SS for datetime columns. This is similar to ISO 8601 but without the "T" separator and timezone info. When inserting or querying dates in SQL, you'll frequently need to convert from other formats into this standard SQL datetime string.
RFC 2822 defines the format used in email "Date:" headers and HTTP response headers. It looks like Mon, 15 Jan 2024 10:30:00 +0000 — weekday abbreviation, day, month abbreviation, 4-digit year, time, and UTC offset. You'll see this format in raw email headers, SMTP logs, and legacy web APIs.
Date conversion becomes genuinely complex when timezones are involved. A Unix timestamp is always UTC-based, so converting 1705334400 gives you January 15, 2024 12:00:00 UTC. But if a user in Tokyo (UTC+9) sees that date, it's already January 15, 2024 at 21:00 local time. Our converter includes a timezone selector so you can view outputs in any major timezone.
WHERE clauses or INSERT statements.The converter uses PHP's native strtotime() and date() functions server-side, which can parse an enormous variety of date string formats. For numeric inputs, it auto-detects whether you've provided seconds or milliseconds based on the magnitude of the number. Once parsed to a Unix timestamp internally, every output format is generated from that single canonical moment in time — ensuring consistency across all output rows.