Milliseconds since epoch
JavaScript, Java, and many telemetry systems store time as milliseconds since the Unix epoch. Paste a value like 1700000000000 to decode it into a readable date, ISO 8601 string, and timezone-aware views.
Why milliseconds matter
Millisecond precision is useful for event ordering, latency measurement, and correlating client and server logs. This page defaults to milliseconds so you do not have to toggle units every time.