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Unix Timestamp Converter

Convert between Unix timestamps and human-readable dates. Supports seconds and milliseconds.

What is a Unix Timestamp Converter?

A Unix timestamp converter translates between Unix epoch timestamps (seconds since January 1, 1970 UTC) and human-readable dates and times. Unix timestamps are the standard time representation in most programming languages, databases, APIs, and operating systems — but they’re not human-readable.

Our converter handles both directions: paste a Unix timestamp to see the date, or select a date to get the timestamp. It supports seconds and milliseconds precision, covering both standard Unix time and JavaScript-style millisecond timestamps.

How to Use This Timestamp Converter

  1. Enter a Unix timestamp to convert it to a readable date and time
  2. Or select a date and time to get the corresponding Unix timestamp
  3. Toggle between seconds and milliseconds depending on your use case
  4. View the result in UTC and local time for timezone clarity
  5. Copy the converted value for use in your code or queries

Common Use Cases

  • Debugging API responses — Convert timestamp fields in JSON responses to readable dates
  • Database queries — Translate stored timestamps when analyzing data directly in SQL
  • Log analysis — Convert log file timestamps to understand when events occurred
  • JWT token inspection — Read the exp and iat claims in JWT tokens
  • Scheduling — Calculate future timestamps for cron jobs, TTLs, and cache expiration

Frequently Asked Questions

What’s the difference between seconds and milliseconds timestamps?

Standard Unix timestamps count seconds since epoch (10 digits, e.g., 1706745600). JavaScript and some APIs use milliseconds (13 digits, e.g., 1706745600000). If your timestamp has 13 digits, it’s likely milliseconds.

What is the Year 2038 problem?

32-bit systems store Unix time as a signed 32-bit integer, which overflows on January 19, 2038. Most modern systems use 64-bit timestamps, which won’t overflow for billions of years. This is similar to the Y2K issue.

  • Cron Parser — Schedule jobs using the timestamps you convert
  • JWT Decoder — Decode tokens containing Unix timestamps
  • JSON Formatter — Format API responses containing timestamps