Cron Parser
Break down a cron expression and describe its schedule.
Results appear as you type
Everything runs locally in your browser — your input never leaves this page.
About the Cron Parser
The Cron Parser takes a standard 5-field cron expression and explains, in plain English, exactly when it will run. Enter a schedule and instantly see whether it fires every minute, every weekday at 9am, or on the first of the month. The expression is parsed locally in your browser, so nothing is transmitted.
How to use
- Type your 5-field cron expression (minute, hour, day-of-month, month, day-of-week).
- Read the human-readable description of the schedule.
- Tweak the fields until the timing matches what you intend.
Frequently asked questions
- What do the five fields mean?
- From left to right they are minute, hour, day of month, month and day of week, each accepting numbers, ranges, lists and asterisks.
- Does it support step values like */5?
- Yes. Common syntax such as steps (*/5), ranges (1-5) and lists (1,15,30) is recognized and described.
- Is this for the standard 5-field format?
- Yes. It parses the classic 5-field crontab format used by Unix cron and most schedulers.