Timestamp Converter
Convert Unix timestamps to human-readable dates and back.
- Reading time:
- 2 min
- Last updated:
- Price:
- Free, no signup
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What the Timestamp Converter does
Convert Unix timestamps to human-readable dates and transform date-time strings into Unix epoch seconds and milliseconds.
Effortlessly debug API timestamps, database records, JWT token expirations, and log entries.
Why the Timestamp Converter is useful
Unix timestamps (e.g., 1740000000) are machine-friendly but impossible for humans to interpret at a glance.
A fast converter translates numbers into UTC and local date formats instantly, eliminating timezone conversion confusion.
Also known as: timestamp converter, unix time, free timestamp converter, online timestamp converter, timestamp converter online free, timestamp converter tool, best timestamp converter tool.
How to use the Timestamp Converter
- 1
Input Timestamp or Date
Enter a Unix epoch value in seconds or milliseconds, or select a date and time.
- 2
Choose Timezone
View the converted date in UTC, your local browser timezone, or ISO 8601 format.
- 3
Copy Converted Value
Copy the formatted date string or timestamp directly into your code or database query.
Key features
- Auto-detects seconds (10 digits) vs milliseconds (13 digits)
- Displays conversions in UTC, local time, ISO 8601, and RFC 2822 formats
- Relative time indicator (e.g., 'in 2 hours' or '3 days ago')
- One-click button to capture current real-time epoch timestamp
Benefits
- Eliminates timezone and daylight saving calculation errors
- Speeds up debugging of database created_at / updated_at columns and log files
- Easily verify expiration claims (exp, iat) in security tokens and cookies
Real-life use cases
Backend API Debugging
Convert epoch integers returned by REST APIs into human-readable calendar dates.
Log Analysis
Map server log timestamps to incident timeframes during system troubleshooting.
Tips for the best results
- A 10-digit number is in seconds; a 13-digit number is in milliseconds.
- Always store timestamps in UTC in your database to avoid regional timezone inconsistencies.
- Remember that JavaScript's Date.now() returns milliseconds, while many Unix utilities use seconds.
Conclusion
A reliable timestamp converter bridges the gap between machine epoch numbers and human calendar dates, simplifying database and API development.
Frequently asked questions
What is a Unix timestamp?
- It is the number of seconds that have elapsed since the Unix Epoch on January 1, 1970 (00:00:00 UTC).
How can I tell if a timestamp is in seconds or milliseconds?
- Timestamps in seconds currently have 10 digits (e.g., 1730000000), while milliseconds have 13 digits.
What is the Year 2038 problem?
- On January 19, 2038, 32-bit signed integers will overflow; modern 64-bit systems handle timestamps far into the future.
Does a Unix timestamp include leap seconds?
- Unix time treats every day as having exactly 86,400 seconds and does not explicitly count leap seconds.
Can I convert negative timestamps?
- Yes, negative integers represent dates prior to January 1, 1970.
What format is ISO 8601?
- It looks like '2026-11-01T12:00:00Z', providing an unambiguous global date representation.
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