Unix Timestamp Converter - Date & Time

Convert between Unix timestamps and human-readable dates instantly. Supports seconds and milliseconds. Free developer tool.

Current Unix timestamp

1779184902

Tue, 19 May 2026 10:01:42 GMT

Timestamp to Date

Date to Timestamp

Convert Unix timestamps

Convert between Unix timestamps (seconds since Jan 1, 1970) and human-readable dates. Get the current timestamp or convert any date to its timestamp equivalent. Essential for developers working with APIs and databases.

The converter parses Unix timestamps (seconds since the epoch, January 1, 1970 UTC) and formats them into human-readable date strings using the Intl.DateTimeFormat API. It automatically detects whether input is in seconds (10 digits) or milliseconds (13 digits). The reverse direction uses Date.getTime() to generate timestamps from date picker input.

Timestamp conversion is essential for debugging API responses that return epoch timestamps, analyzing server logs where events are logged as Unix time, working with databases that store dates as integers, coordinating across time zones in distributed systems, and calculating durations between events in monitoring dashboards.

Always store timestamps in UTC and convert to local time only for display - this prevents timezone bugs when users travel or servers are in different regions. Be aware that JavaScript timestamps use milliseconds while most other languages and databases use seconds - a common source of off-by-1000x errors. For dates before 1970, Unix timestamps are negative numbers.

Programming language date libraries (moment.js, date-fns, Python's datetime) handle timestamp conversion programmatically. Websites like epochconverter.com offer similar functionality. This tool provides instant bidirectional conversion with timezone display and supports both seconds and milliseconds formats - useful for quick debugging without writing code or switching to a terminal.

How the Timestamp Converter Works

  1. 01Enter a Unix timestamp (seconds or milliseconds) to convert to a human-readable date
  2. 02Or select a date and time to convert to a Unix timestamp
  3. 03The converter handles both directions instantly
  4. 04Results show the date in your local timezone and UTC

Understanding Unix Timestamps

A Unix timestamp counts the seconds since January 1, 1970 (the Unix epoch). It's the standard way computers store time internally and is used in databases, APIs, and log files. JavaScript uses milliseconds (13 digits) while most other systems use seconds (10 digits). Always store timestamps in UTC to avoid timezone confusion - convert to local time only for display.

When to Use a Timestamp Converter

Use this converter when debugging API responses that contain Unix timestamps, analyzing server logs with epoch time, converting between time zones, or working with databases that store dates as timestamps.

Common Use Cases

  • Debug API responses that return dates as Unix timestamps instead of readable strings
  • Analyze server logs where events are recorded in epoch time JSON Formatter & Validator - Instant Results
  • Convert between time zones by using UTC timestamps as the common format
  • Calculate durations between events using timestamp arithmetic
  • Set expiration dates in JWT tokens or caching headers using Unix timestamps Base64 Encoder & Decoder - Free Online

Expert Tips

  • Always store timestamps in UTC and convert to local time only for display - this prevents timezone bugs in distributed systems
  • JavaScript uses milliseconds (13 digits) while most other languages use seconds (10 digits) - dividing by 1000 or multiplying by 1000 is a common fix
  • For dates before January 1, 1970, Unix timestamps are negative numbers - not all systems handle negative timestamps correctly

Frequently Asked Questions

What is a Unix timestamp?→
A Unix timestamp is the number of seconds since January 1, 1970 00:00:00 UTC. For example, timestamp 1704067200 represents January 1, 2024. It provides a universal, timezone-independent way to represent a moment in time.
Seconds vs milliseconds timestamps?→
Unix timestamps traditionally use seconds (10 digits). JavaScript Date.now() returns milliseconds (13 digits). This converter handles both formats automatically.
How do I get the current timestamp?→
JavaScript: Date.now(). Python: import time; time.time(). Bash: date +%s. This tool also shows the current timestamp.
What is the Year 2038 problem?→
32-bit systems storing Unix timestamps as signed integers will overflow on January 19, 2038. Most modern systems use 64-bit timestamps to avoid this.

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