Can I use this offline?

After Available offline appears, this tool can process new local input without a network connection. App files are cached, never your document.

Is my input uploaded?

No. Processing happens in this browser. Files and results are not saved between visits.

Five standard fields and up to 256 bytes. Seconds, years, macros and Quartz extensions are not supported. Restricted day-of-month and weekday fields use OR.

Pattern tools

Cron Expression Explainer

Explain five-field cron schedules in plain English without sending your expression anywhere.

Runs locally

Expression

Output

Runs locally in your browser

Five standard fields. Up to 256 bytes. Scheduler time zone applies.

Guide

Read a cron scheduling expression as a description of when a recurring task is meant to run. Use it to check the schedule before configuring it in the system that will actually run the task.

Add your input
Type five fields in Expression or choose Every 5 minutes or Every Monday.
Read the result
Read the automatic explanation, or choose Explain to run it again. Your scheduler determines the time zone.
Keep your work
Use Copy output or Download above the fields. Changing inputs clears the previous result.

On mobile, choose the result tab to read the result. Clear removes your document and result.

Expression fields, from left to right

Minute: 0–59.
Hour: 0–23.
Day of month: 1–31.
Month: 1–12.
Day of week: 0–7; both 0 and 7 mean Sunday.

Writing a schedule

*: every value. Example: * in Hour means every hour.
Step: */5 in Minute means every five minutes.
Range: 1-5 in Day of week means Monday through Friday.
List: 1,3,5 selects those individual values.
Your scheduler controls the time zone. Seconds, years and special macros are not supported.

Shortcuts

Ctrl / Cmd + Enter — Run selected action
Ctrl / Cmd + Shift + C — Copy output
Ctrl / Cmd + S — Download output
? — Show shortcuts outside text fields

Shortcuts work while focus is in the workspace. Copy and download need valid output.

Common questions

Can I use this offline?: After Available offline appears, this tool can process new local input without a network connection. App files are cached, never your document.
Is my input uploaded?: No. Processing happens in this browser. Files and results are not saved between visits.
What are the limits?: Five standard fields and up to 256 bytes. Seconds, years, macros and Quartz extensions are not supported. Restricted day-of-month and weekday fields use OR.

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