Build, parse, and understand cron expressions visually. See human-readable schedules and next run times.
Every minute
Build cron expressions using intuitive dropdowns — no need to memorize cron syntax.
Instantly see what your cron expression means in plain English, like 'Every day at 3:00 AM'.
See the next 5 scheduled execution times so you can verify your schedule is correct.
All processing happens in your browser. Your cron configurations never leave your device.
Start from common schedules like 'Every hour', 'Daily at midnight', or 'Weekly on Monday'.
Paste any cron expression to see its human-readable description and upcoming run times.
Convert between Unix timestamps and human-readable dates.
Test and debug regular expressions with real-time matching.
Format and validate JSON data with syntax highlighting.
Generate universally unique identifiers instantly.
Common questions about cron expressions and scheduling.
A cron expression is a string of 5 fields separated by spaces that defines a schedule. The fields represent: minute (0-59), hour (0-23), day of month (1-31), month (1-12), and day of week (0-7, where 0 and 7 are Sunday). Special characters like * (any), */n (every n), and , (list) allow flexible scheduling.
This cron expression means 'every 5 minutes'. The */5 in the minute field means 'every 5th minute', and the asterisks in the remaining fields mean 'every hour, every day, every month, every day of the week'.
No. All cron expression parsing and schedule calculation happens entirely in your browser using JavaScript. Your configuration data never leaves your device.
Use the cron expression '0 3 * * *'. This means: at minute 0, hour 3, every day of month, every month, every day of week. You can easily build this using our visual builder by selecting '0' for minute and '3' for hour.
Standard 5-field cron uses minute, hour, day of month, month, day of week. Extended 6-field cron adds a seconds field at the beginning. Most Unix-like systems use 5-field, while some job schedulers (like Quartz) support 6-field expressions.