Cron Expression Parser
Paste a 5-field cron expression and get a plain-English description.
Paste a standard 5-field cron expression and get back a plain-English description of when it runs, like "every day at 2:30 AM" or "every Monday and Friday at midnight." Useful for double-checking a crontab entry, a CI/CD schedule, or a cloud function trigger before deploying it, since a single misplaced field can silently change a job from daily to hourly. Parsing runs entirely client-side.
Loading tool
Details
- Category
- Developer & data
- Runs
- In your browser
- Files uploaded
- No
- Cost per run
- Free
- Sign-in
- Not required
- Works offline
- Yes, once loaded
Last updated 2026-08-03
Common questions
What format does it expect?
Standard 5-field cron: minute hour day-of-month month day-of-week.
Does it support special characters like * and /?
Yes - wildcards, ranges (1-5), lists (1,3,5), and step values (*/15) are all parsed.
Can I use this for AWS or Kubernetes cron schedules?
Both use the same 5-field cron syntax, so this works for verifying CronJob and EventBridge schedule expressions.
Does it upload my expression?
No - parsing happens entirely in your browser.