Cron Expression Parser
Parse a 5-field cron expression and see when it will next fire, with a plain-English explanation.
Cron Expression Parser — A cron expression is a compact way to describe a recurring schedule. The classic format has five fields: minute, hour, day of month, month, and day of week. Each field can be a wildcard (*), a single value, a list (1,15,30), a range (9-17), or a step (*/15, 9-17/2).
Parsing runs locally in your browser. No expression is sent to a server.
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What is cron expression parser?
A cron expression is a compact way to describe a recurring schedule. The classic format has five fields: minute, hour, day of month, month, and day of week. Each field can be a wildcard (*), a single value, a list (1,15,30), a range (9-17), or a step (*/15, 9-17/2).
Paste any cron expression and the tool breaks it down field by field, shows you the next five times it will fire (in UTC), and gives you a plain-English summary so you can sanity-check what you wrote.
How to use it
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Paste a cron expression
Five space-separated fields. Wildcards, lists, ranges, and steps are all supported.
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Read the breakdown
Each field shows its raw value, allowed range, and matched values.
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Check the next runs
Use the UTC time list to confirm the schedule fires when you expect.
Examples
Every 15 minutes
A very common heartbeat schedule.
Result: */15 * * * *
Weekday mornings at 9:00
Monday through Friday, 9 AM sharp.
Result: 0 9 * * 1-5
First of the month, midnight
Classic monthly job schedule.
Result: 0 0 1 * *
Frequently asked questions
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