Convert Date to Unix Timestamp
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Convert date to unix timestamp format instantly with this free online tool.
About Date to Unix Timestamp Converter
**What You Get:**
Enter a date and time, and our converter outputs the corresponding Unix timestamp - the number of seconds (or milliseconds) since January 1, 1970, 00:00:00 UTC.
**Why Convert Dates to Timestamps?**
- Store dates efficiently in databases
- Create API request parameters
- Set cookie expiration times
- Generate cache timestamps
- Schedule tasks in cron-like systems
**Accepted Input Formats:**
- ISO 8601: 2024-01-15T14:30:00Z
- Common formats: January 15, 2024 2:30 PM
- Date only: 2024-01-15 (assumes midnight)
- Relative: today, yesterday, +1 week
**Output Options:**
- Seconds (10 digits) - standard Unix timestamp
- Milliseconds (13 digits) - JavaScript/Java format
- Both formats for convenience
**Developer Use Cases:**
- Creating scheduled job timestamps
- Setting authentication token expiry
- Building date-based API queries
- Generating test data with timestamps
- Converting user input for storage
**Timezone Handling:**
The converter accounts for your local timezone when processing dates. UTC and local time equivalents are shown for clarity. For UTC-specific conversions, append "Z" to your date string.
Frequently Asked Questions
Common formats like "January 15, 2024", "2024-01-15", "01/15/2024", and ISO 8601 format all work. The converter is flexible with input formats.
Append "Z" for UTC, or use timezone offsets like "+05:30" or "-08:00". Without a timezone, your local timezone is assumed.
Unix timestamps in seconds are 10 digits (like 1609459200). Milliseconds are 13 digits (like 1609459200000). JavaScript uses milliseconds, while most other systems use seconds.
Yes! Dates before January 1, 1970 produce negative timestamps. For example, December 31, 1969 is -86400 seconds.
This is usually a timezone issue. Make sure you are accounting for whether your input date is in local time or UTC.
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Looking for more options? Try the full String Utilities with additional features and conversion modes.