Cron Parser
Validate cron expressions and preview the next runs.
Try:
Description: at minute */15, hour 9-17, day-of-week 1-5
minute
*/15
hour
9-17
day-of-month
*
month
*
day-of-week
1-5
runs
- #1May 14, 2026, 9:00:00 AM
- #2May 14, 2026, 9:15:00 AM
- #3May 14, 2026, 9:30:00 AM
- #4May 14, 2026, 9:45:00 AM
- #5May 14, 2026, 10:00:00 AM
- #6May 14, 2026, 10:15:00 AM
- #7May 14, 2026, 10:30:00 AM
- #8May 14, 2026, 10:45:00 AM
- #9May 14, 2026, 11:00:00 AM
- #10May 14, 2026, 11:15:00 AM
About this tool
Validate cron expressions, see a plain-English breakdown of each field, and preview the next runs in any timezone.
Features
- Standard 5-field cron
- Per-field breakdown
- Next N runs in your chosen timezone
- Quick preset chips
How to use it
- Paste or pick a cron expression.
- Pick a timezone.
- Read the next runs and field breakdown.
🔒 100% private
Everything happens inside your browser using JavaScript and WebAssembly. Your files are never uploaded to a server, never stored, and never seen by us.
Frequently asked questions
Does it support seconds (6-field)?
No - only the standard 5-field cron form (minute, hour, day-of-month, month, day-of-week) is accepted. 6-field expressions with seconds will be rejected.