Date & Time Tools

Dates cause a steady share of software bugs: a timestamp in seconds treated as milliseconds, a date parsed in the wrong time zone, or a format string that works in one library and not another. These tools show you what a value means before you build on it.

The Unix timestamp converter shows the current epoch time and translates any timestamp to a readable date in UTC and your local zone. It detects seconds versus milliseconds for you. For example, 1767225600 and 1767225600000 both resolve to 1 January 2026, 00:00 UTC. The date converter accepts most date strings and reformats them into ISO 8601, RFC 2822, locale formats or a custom pattern you define, with time-zone conversion built in.

The time zone converter lines up one moment across several zones, and the date difference calculator counts the years, months, days and business days between two dates. All of these tools run in your browser, so they are safe for any data and quick enough to use in the middle of a debugging session.