Cron Expression Builder
Build and decode cron expressions — minute, hour, day, month, weekday.
How to Use
- Type or edit a cron expression.
- Plain-English explanation and next run times appear.
Expression
Decoded
Syntax
Field order
min hour day-of-month month day-of-week
Ranges
0-59 / 0-23 / 1-31 / 1-12 / 0-6 (Sun=0)
*
Every value
*/n
Every n steps
a,b,c
List
a-b
Range
Frequently Asked Questions
Unix vs Quartz syntax?
Classic Unix cron: 5 fields (min hour dom mon dow). Quartz/systemd: 6 or 7 fields with seconds and year.
Common Use Cases
Debug cron jobs
See exactly when your backup runs.
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