Timestamp Converter
LiveConvert Unix timestamps to human-readable dates and vice versa.
Understanding Unix Timestamps & Date Formats
Unix timestamps — seconds elapsed since January 1, 1970 UTC — are the universal time representation in computing. Databases store creation dates as timestamps, APIs return event times as epoch seconds or milliseconds, JWT tokens encode expiration as Unix time, and log files record events with epoch values. Converting between human-readable dates and Unix timestamps is essential for debugging time-related bugs, verifying token expiration, analyzing logs, and building scheduling logic that works across timezones.
Convert between Unix/Epoch timestamps and human-readable date formats with timezone awareness.
The Devkitr Timestamp Converter translates between Unix timestamps (seconds and milliseconds) and human-readable date formats in any timezone. Enter a Unix timestamp to see the corresponding date, or enter a date to get the timestamp — with support for ISO 8601, RFC 2822, and custom date format strings.
In a typical development workflow, Timestamp Converter becomes valuable whenever you need to convert unix timestamps to human-readable dates and vice versa. Whether you are working on a personal side project, maintaining production applications for a company, or collaborating with a distributed team across time zones, having a reliable browser-based conversion tool eliminates the need to install desktop software, write one-off scripts, or send data to third-party services that may log or retain your information. Since Timestamp Converter processes everything locally on your device, your data stays private and your workflow stays uninterrupted — open a browser tab, paste your input, get your result.
Key Features
Bidirectional Conversion
Convert timestamps to dates and dates to timestamps in a single interface, supporting both seconds and milliseconds precision.
Timezone Selection
Convert to and from any timezone worldwide — UTC, local time, or any IANA timezone (America/New_York, Asia/Tokyo, Europe/London).
Multiple Output Formats
Display results in ISO 8601, RFC 2822, Unix seconds, Unix milliseconds, and customizable human-readable formats.
Relative Time Display
Shows "3 hours ago" or "in 2 days" relative time alongside absolute timestamps for quick context.
How to Use Timestamp Converter
Enter a Timestamp or Date
Paste a Unix timestamp (1711900800) or type a readable date (2024-03-31 12:00:00).
Select Timezone
Choose the timezone for interpretation — UTC for server timestamps, local time for user-facing dates.
Read Converted Values
See the timestamp converted to all output formats simultaneously: ISO 8601, Unix seconds, milliseconds, and relative time.
Copy the Format You Need
Click copy on the specific format required by your API, database, or logging system.
Use Cases
Debugging JWT Token Expiration
Convert the exp claim from a JWT payload to a readable date to verify when the token expires and whether it has already expired.
Analyzing Server Logs
Convert epoch timestamps in log entries to human-readable dates to correlate events with real-world times.
Setting API Timeouts and TTLs
Calculate the Unix timestamp for "24 hours from now" to set cache TTLs, token expiration, or scheduled task times.
Cross-Timezone Coordination
Convert a meeting time in one timezone to multiple other timezones for distributed team scheduling.
Pro Tips
Check whether the timestamp is in seconds (10 digits) or milliseconds (13 digits) — JavaScript uses milliseconds while most server-side languages use seconds.
Always store timestamps in UTC and convert to local time only for display — this prevents timezone-related bugs in distributed systems.
Use ISO 8601 format (2024-03-31T12:00:00Z) for API communication — it is unambiguous and parseable across all programming languages.
Remember that Unix timestamp 0 is January 1, 1970 00:00:00 UTC — negative timestamps represent dates before 1970.
Common Pitfalls
Confusing seconds and milliseconds timestamps
Fix: A 10-digit number (1711900800) is seconds. A 13-digit number (1711900800000) is milliseconds. Using the wrong one shifts your date by decades.
Ignoring timezone when converting dates to timestamps
Fix: The same date-time string produces different timestamps in different timezones. Always specify the timezone explicitly during conversion.
Storing local time instead of UTC in databases
Fix: Store all timestamps as UTC (Unix epoch or ISO 8601 with Z suffix). Convert to local time only at the display layer in the frontend.
Frequently Asked Questions
QWhat is a Unix timestamp?
A Unix timestamp is the number of seconds elapsed since January 1, 1970 00:00:00 UTC (the Unix epoch).
QDoes it handle millisecond timestamps?
Yes. The tool auto-detects whether the input is in seconds or milliseconds and converts accordingly.
QWhich timezones are supported?
The tool displays in your local timezone and UTC. You can see both to compare.
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