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Cron Expression Parser

Cron Expression Parser

Parse cron expressions to visualize next N execution times. Supports standard 5/6/7-field formats, timezone switching, common presets, and human-readable descriptions. Ideal for debugging crontab, CI/CD pipelines, and scheduled tasks.

Cron Expression Parser

Quick Start

1
Enter a cron expression (e.g. */5 * * * *) or pick a preset
2
View the human-readable description and next execution times
3
Check field breakdown to understand each position
4
Copy results with one click

Common Scenarios

CI/CD pipelines

validate cron schedules for GitHub Actions / GitLab CI

Linux crontab

verify your cron syntax before deploying

Kubernetes CronJobs

simulate execution times to verify scheduling

Monitoring alerts

plan check intervals to balance coverage and cost

Usage Advice

Standard cron uses 5 fields (minute hour day month weekday). 6-field format adds seconds, and 7-field format adds a year.
Weekday: 0 = Sunday, 1 = Monday, …, 6 = Saturday; names like MON-FRI also work
Execution times are calculated in the selected timezone. Switching zones also changes DST behavior.

Limitations

Special characters L, W, # (Quartz-style) are not supported
Year field is supported in numeric form only. Advanced Quartz tokens like L, W, and # are still not supported.

Privacy & Security

All processing happens in your browser; data never leaves your device

FAQ

5

Continue with these related tools for the next step.