Date/Time Converter
Timezone Conversions
UTC
Fri, Sep 4, 2026, 16:00:00
UTC (UTC+00:00)
Eastern (New York)
Fri, Sep 4, 2026, 12:00:00
EDT (UTC-04:00)
London
Fri, Sep 4, 2026, 17:00:00
GMT+1 (UTC+01:00)
Tokyo
Sat, Sep 5, 2026, 01:00:00
GMT+9 (UTC+09:00)
Convert Unix seconds or milliseconds
Unix time counts from 1970-01-01T00:00:00Z. Ten-digit values commonly represent seconds; thirteen-digit values commonly represent milliseconds. Add an explicits or ms suffix when a value’s unit is ambiguous.
A timestamp has no timezone
A Unix timestamp identifies an instant. A timezone only changes how that instant is displayed. Convert the value once, then compare UTC, your local time, and any IANA zone without changing the underlying moment.
Common developer checks
- Confirm whether an API uses seconds or milliseconds.
- Turn log, token-expiry, and database timestamps into readable dates.
- Compare the same event across production regions and user timezones.