CronKit

*/30 * * * * explained

Every 30 minutes

Every 30 minutes
Runs twice an hour, on the hour and half hour. · 5-field cron

Next 5 runs (UTC)

#Run time (UTC)When
1Tue, Aug 4, 2026, 16:00:00 UTCin 24 min
2Tue, Aug 4, 2026, 16:30:00 UTCin 54 min
3Tue, Aug 4, 2026, 17:00:00 UTCin 1h 24m
4Tue, Aug 4, 2026, 17:30:00 UTCin 1h 54m
5Tue, Aug 4, 2026, 18:00:00 UTCin 2h 24m

Try it in your timezone

*/30 * * * *
Get this as JSON (developer API)
curl "https://cron.wrapper-agency.com/api/v1/cron?expr=*%2F30%20*%20*%20*%20*&tz=UTC"

Free cron API — no key during beta. Parsing is standard 5-field (or 6-field with seconds) cron, computed with cron-parser.

How to read this expression

FieldValueMeaning
Minute*/30every 30 step
Hour*every value
Day of month*every value
Month*every value
Day of week*every value

Related schedules

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

FAQ

Is "*/30 * * * *" a valid cron expression?
Yes — it parses as a standard 5-field cron expression: Every 30 minutes.
How do I use it?
Paste it into your crontab, CI scheduler, or job runner. Need a different schedule? Edit the fields in the builder above or browse all common cron expressions.

Looking for a phrase instead? See every minute, every 5 minutes, every 10 minutes, every 15 minutes.