Cron Parser
Explain a five or six field cron expression.
Loading tool
Paste 0 9 * * 1-5 and see weekday mornings. Next-run times use the zone you pick, not only UTC.
How to use this tool
- Paste the snippet. Drop JSON, code, or a token into the input. It is not sent to a server.
- Run the action. Format, decode, or generate. Parse errors stay on the page.
- Copy the output. Copy the result back into your editor or terminal.
Dialects
Unix five-field and optional seconds are accepted. Quartz names such as ? and L are flagged when they are not in the Unix dialect.
Frequently asked
Does it run the job?
No. It only explains and previews fire times.
What about @daily?
Common nicknames expand to the usual five fields.
Why is the next run wrong in summer?
Check the timezone control. DST can skip or repeat a local hour.
Are years supported?
A seventh year field is ignored. Use a real scheduler for that.
Is the expression uploaded?
No.