Developer Tools

Cron Expression Parser

Parse and explain cron expressions directly in your browser.

Break down any standard 5-field cron expression into its individual fields and see a plain English explanation of when it will run.

Cron Expression Parser

Parse and explain each field of a standard 5-field cron expression.

Cron expression

Format: minute hour day month weekday

Field reference

Minute0–59

Hour0–23

Day of month1–31

Month1–12

Day of week0–7 (0 and 7 = Sunday)

Output

// Parsed fields will appear here.

How to use

1. Enter a cron expression
Paste a 5-field cron expression such as 0 9 * * 1-5.
2. Click Parse
Each field is validated and explained individually, then combined into a readable sentence.
3. Copy the result
Copy the parsed output to use in documentation, pull requests, or code comments.

Example

The expression 0 9 * * 1-5 triggers at 09:00 on weekdays. Load the example in the tool to see the full breakdown.

Expression: 0 9 * * 1-5

Minute:       0         → 0
Hour:         9         → 09
Day of month: *         → every day of the month
Month:        *         → every month
Day of week:  1-5       → Monday through Friday

Human readable: At 09:00, Monday through Friday

FAQ

What cron format does this support?

This tool supports standard 5-field cron expressions in the format: minute hour day-of-month month day-of-week.

Does it run locally?

Yes, parsing happens entirely in your browser. No data is sent to a server.

What does 0 9 * * 1-5 mean?

It means the job runs at 09:00 every Monday through Friday.

Cron Expression Parser