Home โบ Convert โบ Jenkins to Crontab
Convert Jenkins cron to Crontab
Jenkins expressions look similar to Crontab, but the differences matter. Paste yours below; the result is checked against the original run times.
What changes from Jenkins to Crontab
- Jenkins
Hvalues pick a per-job offset, which no other system has. The converter replaces them with the start of the range.
Worked examples
| Schedule | Jenkins | Crontab |
|---|---|---|
| every minute | * * * * * | * * * * * |
| every weekday at 8:30 AM | 30 8 * * 1-5 | 30 8 * * 1-5 |
Conversions that come with a warning
- every 5 minutes:
H/5 * * * *โ*/5 * * * *. Jenkins H values have no equivalent elsewhere; they were replaced by their range start. - every 10 minutes:
H/10 * * * *โ*/10 * * * *. Jenkins H values have no equivalent elsewhere; they were replaced by their range start. - every 15 minutes:
H/15 * * * *โ*/15 * * * *. Jenkins H values have no equivalent elsewhere; they were replaced by their range start. - every 30 minutes:
H/30 * * * *โ*/30 * * * *. Jenkins H values have no equivalent elsewhere; they were replaced by their range start.
Field layout and time zones
minute (0-59), hour (0-23), day-of-month (1-31), month (1-12), day-of-week (0-7, 0 and 7 = Sunday).
Jenkins uses the controller's time zone. Put TZ=Asia/Kolkata on its own first line of the trigger to override it.
minute (0-59), hour (0-23), day-of-month (1-31), month (1-12), day-of-week (0-7, 0 and 7 = Sunday).
Cron runs in the server's local time zone. Check it with the date command, or put CRON_TZ=Asia/Kolkata above the line on cronie-based systems.
Go the other way
Convert Crontab to Jenkins, or open the Jenkins builder or the Crontab builder.
Frequently asked questions
How do I convert a Jenkins cron expression to Crontab?
Paste it into the converter above with Jenkins as the source and Crontab as the target. For example, * * * * * becomes * * * * *.
Is every Jenkins expression convertible to Crontab?
Yes for the common schedules we tested (27 of 27), though unusual expressions with special characters might need manual review.
Does Crontab run in the same time zone as Jenkins?
Not necessarily. Conversion changes the syntax, not the time zone. Check where each system evaluates the schedule before you rely on the same clock times.