CRON Expression Builder Online

CRON Expression
* * * * *
Every minute
Builder Parser
Presets
Minute 0–59
Hour 0–23
Day of Month 1–31
Month 1–12
Day of Week 0–6 (Sun–Sat)
Human-readable
Every minute
Next 10 runs
✓100% local ✓No server ✓No signup ✓No tracking
Cron Syntax Cheatsheet
*Any value
,Value list (1,3,5)
-Range (1-5)
/Step (*/15)
FieldValues
Minute0–59
Hour0–23
Day of Month1–31
Month1–12
Day of Week0–6 (Sun=0)

Frequently Asked Questions

What is a cron expression?

A cron expression is a string of five fields (minute, hour, day of month, month, day of week) that defines a schedule for recurring tasks. It is used in Unix-like systems, CI/CD pipelines, and task schedulers.

What do the five cron fields mean?

The five fields are: Minute (0–59), Hour (0–23), Day of Month (1–31), Month (1–12), and Day of Week (0–6, where 0 is Sunday). Each field can use *, specific values, ranges (-), steps (/), and lists (,).

What does */5 mean in cron?

*/5 means "every 5 units". For example, */5 in the minute field means "every 5 minutes" (at 0, 5, 10, 15, ... 55). The * means "all values" and /5 is the step.

Is my data safe?

Yes. All expression building and parsing happens entirely in your browser. No data is ever sent to any server. You can verify this in the Network tab of your browser's developer tools.

Does this support 6-field cron with seconds?

The parser accepts 6-field expressions (with seconds as the first field) and will extract the standard 5 fields. The visual builder uses the standard 5-field format.