Cron Expression Parser

Parse cron expressions into human-readable text, visualize schedules, and see upcoming run times.

0
Minute
0-59
9
Hour
0-23
*
Day of Month
1-31
*
Month
1-12
1-5
Day of Week
0-6
📖 Cron Syntax Reference
* — any value
5 — exact value
1-5 — range
1,3,5 — list
*/15 — every N
1-5/2 — range + step
┌──────── minute (0-59)
│ ┌────── hour (0-23)
│ │ ┌──── day of month (1-31)
│ │ │ ┌── month (1-12)
│ │ │ │ ┌ day of week (0-6, Sun=0)
* * * * *

About Cron Expressions

A cron expression is a string of five fields that defines a schedule for recurring tasks. Originally from Unix crontab, cron expressions are now used in Linux servers, CI/CD pipelines (GitHub Actions, GitLab CI, Jenkins), cloud services (AWS CloudWatch, Google Cloud Scheduler, Azure Functions), container orchestration (Kubernetes CronJobs), and application frameworks (Spring @Scheduled, Celery Beat, node-cron).

This parser reads standard 5-field cron expressions, translates them to human-readable descriptions, and calculates the next execution times based on your local timezone. Use the presets for common patterns or type your own expression.

All parsing happens locally in your browser — no data is sent to any server.