Epoch milliseconds to date
Convert a 13-digit millisecond epoch timestamp (like JavaScript’s Date.now) to a readable date. Free two-way converter.
JavaScript and many APIs use milliseconds since 1970 — a 13-digit number. Paste one here to get the human date in UTC and local time. It is the same tool that handles second-based timestamps.
Milliseconds vs seconds
A 13-digit value is milliseconds (Date.now(), java.time, many logs); a 10-digit value is seconds (classic Unix time). If your date lands in 1970, you fed milliseconds into a seconds converter or vice versa — the tool auto-handles both, but knowing which you have avoids confusion.
UTC and local
The millisecond timestamp is UTC. The converter shows both UTC and your local time so you can cross-check against the wall clock. Keep comparisons in UTC and localize only for display.
Try it now — free, no signup
Use the timestamp converter in your browser. Then, when you need it at scale with an API key and higher limits, grab the full Eveses API.