About this tool
Parse cron expressions and show next scheduled runs. Saves time when logs, design specs, or infra configs use a different format than your code expects.
Paste a five-field cron expression (minute hour day month weekday). Read the plain-English description of the schedule. Example — Weekday morning job: try `0 9 * * 1-5` and expect something like `Description: At 09:00 AM, Monday through Friday Next runs: (five upcoming local timestamps)`.
Next-run times use your browser clock and timezone, not the server that will execute the job. See also: Cron Builder, and Cron to Human. Runs in your browser — nothing you paste gets uploaded.
How to use
- Paste a five-field cron expression (minute hour day month weekday).
- Read the plain-English description of the schedule.
- Check the next several run times to confirm DST and weekday edges.
- Adjust the expression and re-parse until the upcoming runs look right.
Example
Weekday morning job
Input
0 9 * * 1-5
Output
Description: At 09:00 AM, Monday through Friday Next runs: (five upcoming local timestamps)
Limitations
- Next-run times use your browser clock and timezone, not the server that will execute the job.
- Non-standard sixth-field (seconds) or quartz-specific syntax may be rejected.
- Does not simulate skipped runs when a host was offline or a queue was paused.
Related guides
1Related tools
2Frequently asked questions
What does the Cron Expression Parser do?
Parse cron expressions and show next scheduled runs. Runs in your browser — no install, no account.
How do I use the Cron Expression Parser?
Paste a five-field cron expression (minute hour day month weekday). Read the plain-English description of the schedule. Check the next several run times to confirm DST and weekday edges. Adjust the expression and re-parse until the upcoming runs look right.
Is the Cron Expression Parser free?
Yes. No signup, no usage limits, no paywall.
Does the Cron Expression Parser upload my data?
No. Processing happens locally in JavaScript. Your input is not uploaded, stored, or logged.
What are the limitations of the Cron Expression Parser?
Next-run times use your browser clock and timezone, not the server that will execute the job. Non-standard sixth-field (seconds) or quartz-specific syntax may be rejected. Does not simulate skipped runs when a host was offline or a queue was paused.