0–59
minute
minute
0–23
hour
hour
1–31
day
day
1–12
month
month
0–7
weekday
weekday
Supports standard five-field cron, lists, ranges, steps, English month/weekday names, and common @ aliases. When both day fields are restricted, traditional cron OR semantics are used. Calculation runs in a browser Worker.
About Cron Expression Parser
Validate standard cron expressions and calculate upcoming run times.
No installation is required and input is not permanently stored. Encoding, formatting, image and QR tools run locally in your browser; only network lookups connect to their respective services.