Cron expression inspector

Inspect numeric five-field cron schedules and find bounded upcoming matches in UTC. No task is scheduled.

Tool guide

How to use Cron expression inspector

Inspect numeric five-field cron schedules and find bounded upcoming matches in UTC. No task is scheduled.

  1. Choose your input type and options. Try the clearly labelled sample first.
  2. UTC only. Numeric five-field syntax; at most 20 matches within 366 days after the start.
  3. Inspection only; nothing is scheduled. Supports *, lists, ascending ranges and range steps. No names, seconds, macros, L/W/#/?. Restricted day fields use OR; a day field beginning with * switches to AND.
  4. Choose the action to process locally, review the text result, then copy or download it. Editing or clearing the input discards the old result. Cancel stops the worker; leaving the page clears working data. No input or result is uploaded or stored by this tool.
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