time
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and back. Supports seconds and milliseconds.
Local: Tue Nov 14 2023 22:13:20 GMT+0000 (Coordinated Universal Time)
UTC: Tue, 14 Nov 2023 22:13:20 GMT
ISO: 2023-11-14T22:13:20.000Z
Seconds: 1700000000
Milliseconds: 1700000000000
Understanding Unix timestamps
A Unix timestamp counts seconds (or milliseconds) since 1970-01-01 00:00:00 UTC, also called the Unix epoch. Logs, databases, and APIs often store time this way because it is compact and timezone-independent.
Steps
- Paste a timestamp to convert it into local time, UTC, and ISO-8601.
- Or enter a date string to get seconds and milliseconds since the epoch.
- Use “Use now” when you need the current epoch second quickly.
- Copy the ISO or numeric value into logs, queries, or documentation.
Tips
- Values with about 13 digits are usually milliseconds; 10 digits are usually seconds.
- Always confirm whether an API expects seconds or milliseconds before shipping.
- ISO-8601 strings with a Z suffix are UTC; local display still depends on your device timezone.
Frequently asked questions
Seconds or milliseconds?
Values with 13+ digits are treated as milliseconds. Shorter values are treated as seconds.
What timezone is shown?
Results show both your local timezone and UTC so you can compare easily.
What is the Unix epoch?
It is midnight UTC on 1 January 1970. Positive timestamps count forward from that instant.