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Analyze and debug crontab schedules. Paste a complete cron expression line (with or without a command) to validate syntax, expand fields into list values, view plain-English descriptions, and schedule upcoming runs.

Cron Input

Field Expansion Breakdown

Field Raw Value Allowed Range Active Matched Values
Value copied!

How to Use Cron Parser

  1. 1. Paste a Cron Expression

    Type or paste a 5-field or 6-field cron expression into the input field.

  2. 2. View Next Run Times

    The tool shows the next scheduled execution dates and times.

  3. 3. Copy the Parsed Output

    Copy the human-readable schedule or the JSON breakdown of the expression fields.

The Technical Details

This interactive web utility provides fast, reliable, and completely private data transformations. In modern workflows, quick formatting, conversions, or estimations are essential. By running all logic entirely in your browser with client-side JavaScript, this tool guarantees that your data never leaves your machine. This approach delivers maximum performance and absolute data privacy, as no information is ever sent to a server.

Frequently Asked Questions

What is the difference between 5-field and 6-field cron?

Standard cron has 5 fields (minute to day-of-week). Some systems like Spring add a 6th field for seconds at the start.

Does the parser handle timezones?

The parser shows times relative to your local browser timezone. Server-side cron runs in the server's configured timezone.

Is any data sent to a server?

No. All parsing runs in your browser; nothing is uploaded or stored.

Are named shortcuts like @daily supported?

Yes. Common shortcuts like @daily, @weekly, @monthly, @hourly, and @yearly are recognized and parsed.