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Cron Helper

Parse cron expressions and see human-readable descriptions, next run times, and field breakdowns. Supports both 5-field (standard) and 6-field (with seconds) formats.

Features

  • Human-readable descriptions - Understand what a cron expression means
  • Next 10 runs - See exactly when the job will execute
  • Field breakdown - View parsed values for each field
  • Common presets - Quick buttons for frequent schedules
  • Seconds support - Optional 6-field format with seconds

How to Use

  1. Enter a cron expression or click a preset
  2. Enable "Include seconds" for 6-field format
  3. Click "Parse"
  4. View the description and next run times

Common Presets

Preset Expression Description
Every minute * * * * * Runs every minute
Every 5 min */5 * * * * Runs every 5 minutes
Hourly 0 * * * * Runs at the start of every hour
Daily midnight 0 0 * * * Runs at midnight
Weekly 0 0 * * 0 Runs Sunday at midnight
Monthly 0 0 1 * * Runs first of month at midnight

Cron Field Reference

5-Field Format (Standard)

* * * * *
| | | | |
| | | | +-- Day of week (0-7, Sun=0 or 7)
| | | +---- Month (1-12)
| | +------ Day of month (1-31)
| +-------- Hour (0-23)
+---------- Minute (0-59)

6-Field Format (With Seconds)

* * * * * *
| | | | | |
| | | | | +-- Day of week (0-7)
| | | | +---- Month (1-12)
| | | +------ Day of month (1-31)
| | +-------- Hour (0-23)
| +---------- Minute (0-59)
+------------ Second (0-59)