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Crontab generator: build an expression and read it in plain words

A crontab expression defines when something should run. Describe it below with AI in one sentence, pick a template or fill in the five fields yourself. The result appears right underneath, in plain words and with the next run times.

1Describe the schedule with AI AI

Write in one sentence when the cronjob should run. An AI suggests the matching crontab expression, which you can then check and change.

The AI only suggests the schedule. Nothing is applied before you have checked it below. What gets transmitted
2Or pick a template

Click something close to what you need and fine-tune it below.

3Check and adjust the fields

An asterisk means every value. You can also use single numbers like 5, lists like 1,15,30, ranges like 9-17 and steps like */15.

0-59 · e.g. 0 or */15
0-23 · e.g. 3 or 9-17
1-31 · e.g. 1 or 1,15
1-12 · usually *
0-7 · 0 and 7 = Sunday
Your expression
* * * * *
As a line in a real crontab
The part after the schedule is the command. > /dev/null 2>&1 discards the output, otherwise cron mails it to you. At Cronjob.de you do not need this: there you only enter the address.
The next five runs

    What the fields accept

    Input Meaning
    *Every value.
    5Exactly this one value.
    1,15,30Several individual values.
    9-17A range, both bounds included.
    */15Every 15th value, counted from the lowest.
    10-40/10Step within a range: 10, 20, 30, 40.

    In the day-of-week field, 0 and 7 both mean Sunday. The characters L, W, ? and # are not part of Unix cron and are not accepted here.

    Full crontab reference including pitfalls · Use this expression at Cronjob.de