WebKit Timestamp Converter

Convert between WebKit/Chrome timestamps and Unix timestamps. For when you need to decode browser history or Chrome extension data.

WebKit to Unix

Microseconds since Jan 1, 1601

Unix to WebKit

Seconds since Jan 1, 1970

About WebKit Timestamps

What are WebKit timestamps?

  • • Used by Chrome, Safari, and WebKit-based browsers
  • • Measured in microseconds (not milliseconds!)
  • • Epoch starts January 1, 1601 UTC
  • • Same epoch as Windows FILETIME but different precision

Where you'll find them:

  • • Chrome browser history database
  • • Chrome extension storage
  • • Safari browsing data
  • • WebKit performance timestamps

Quick Reference:

Current Unix: 1759386644
Current WebKit: 13403860244000000
Precision: Microseconds (1/1,000,000 second)
Epoch Difference: 11,644,473,600 seconds (369 years)
Pro tip:WebKit timestamps are often found in Chrome's History database. Look for the "visits" table if you're doing forensic analysis!