BracketCron Expression Parser & Explainer
Paste a cron expression to get a plain-English explanation and the next 5 scheduled run times. Supports ranges, steps, lists, and @daily/@hourly shortcuts. 100% client-side.
🔒 Runs entirely in your browser — no data is ever sent anywhereFrequently asked questions
What cron syntax does this support?
The standard 5-field format (minute, hour, day-of-month, month, day-of-week), including *, ranges like 1-5, steps like */15, comma-separated lists like 1,15, and the common @yearly/@monthly/@weekly/@daily/@hourly/@midnight shortcuts. Named months or weekdays (e.g. 'MON' or 'JAN') aren't supported — use numbers.
Why does 'day-of-month' say 'or' with 'day-of-week' instead of 'and'?
This matches real cron behavior: when both the day-of-month and day-of-week fields are restricted (not *), a date matches if it satisfies either one, not both. If only one of the two is restricted, only that one is used.
How are the next run times calculated?
This tool simulates forward minute-by-minute from the current time on your device, checking each candidate against the parsed schedule, until it finds 5 matches (capped at 2 years out). Everything happens locally in your browser — your cron expression is never sent anywhere.