Tool description

CRON Parser is a cronjob parser and validator that helps you understand and validate CRON expressions used for scheduling tasks and jobs. This cron expression analyzer parses your CRON expression and displays the next and previous execution times, along with converting the cron expression to text with a human-readable explanation of when the scheduled task will run.

Features

  • CRON Expression Parsing: Parse and validate CRON expressions in standard format with our cronjob validator
  • Next/Previous Execution Times: See when the task will run next and when it last ran
  • Cron Expression to Text: Convert CRON syntax into plain English description with human-readable explanations

What is CRON?

CRON is a time-based job scheduler in Unix-like operating systems. Understanding the cron format explained below is essential for effective task scheduling. A CRON expression is a string consisting of five or six fields separated by spaces that define a schedule:

* * * * *
│ │ │ │ │
│ │ │ │ └─── Day of week (0-7, Sunday = 0 or 7)
│ │ │ └───── Month (1-12)
│ │ └─────── Day of month (1-31)
│ └───────── Hour (0-23)
└─────────── Minute (0-59)

Common Examples:

  • 0 * * * * - Every hour at minute 0
  • */15 * * * * - Every 15 minutes
  • 0 9 * * 1-5 - At 9:00 AM on weekdays (Monday-Friday)
  • 0 0 1 * * - At midnight on the first day of every month
  • 30 14 * * 0 - At 2:30 PM every Sunday