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cron / standard-5-field

Cron Every 30 minutes

Use the Every 30 minutes cron expression */30 * * * *, understand how it works, and preview upcoming runs.

Cron expression*/30 * * * *

Every 30 minutes

cron.shell
Meaning—
Next runs
    Approx. runs/day—
    Approx. runs/week—
    Approx. runs/30 days—
    explain

    How this cron schedule works

    Use the Every 30 minutes cron expression */30 * * * *, understand how it works, and preview upcoming runs.

    Minute*/30
    Hour*
    Day of month*
    Month*
    Day of week*
    alternatives

    Popular Cron Schedules

    * * * * *Every minute→*/2 * * * *Every 2 minutes→*/5 * * * *Every 5 minutes→*/10 * * * *Every 10 minutes→*/15 * * * *Every 15 minutes→0 * * * *Every hour→0 */2 * * *Every 2 hours→0 */3 * * *Every 3 hours→
    FAQ

    Frequently asked questions

    What cron format does this site use?

    The tools use the standard Unix 5-field cron format: minute, hour, day of month, month and day of week.

    Does CronToolsList run my cron job?

    No. The site only builds, explains and calculates schedules. It never executes commands or stores your cron jobs.

    Are expressions sent to a server?

    No. Core calculations run locally in your browser.