Cron Expression Builder

In order: minute (0-59), hour (0-23), day of month (1-31), month (1-12), and day of week (0-6, where both 0 and 7 mean Sunday). Each field can be a wildcard (), a specific value, a range (1-5), a step (/15), or a comma-separated list.

Standard cron uses OR logic in that case: the job runs when either the day-of-month OR the day-of-week condition matches, not only when both match. This is a common source of confusion, so this tool spells it out explicitly in the explanation.

This builder supports standard 5-field cron only. Expressions using Quartz or AWS EventBridge extensions — a 6th/7th field, or the L, W, #, and ? characters — mean something different in those dialects and would be silently miscomputed if treated as standard cron, so they're rejected with an explicit error instead.

Yes. Next run times are computed against wall-clock time in the timezone you select, using that timezone's actual UTC offset (including DST transitions) rather than a fixed offset.