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Kordu Tools

Cron Expression Generator

Build and decode cron expressions visually with human-readable output and next run times.

Cron expression

* * * * *
every minute · every hour · every day of month · every month · every day of week

Next run times

31 Mar 2026, 01:43:00
31 Mar 2026, 01:44:00
31 Mar 2026, 01:45:00
31 Mar 2026, 01:46:00
31 Mar 2026, 01:47:00

How to use

  1. 1

    Configure each field

    Use the visual builder to set the minute, hour, day, month, and weekday fields. Choose 'Every', specific values, a range, or an interval for each.

  2. 2

    Review the expression

    The cron expression updates live as you change settings. A human-readable description appears below it.

  3. 3

    Check next run times

    See the next five scheduled execution times calculated from the current date and time.

  4. 4

    Copy or decode

    Copy the expression to your clipboard, or paste an existing cron expression into the text input to decode it.

Frequently asked questions

What cron format does this use?
Standard five-field cron format: minute, hour, day of month, month, and day of week. This is the format used by crontab on Linux/macOS and most scheduling libraries.
Are the next run times accurate?
Yes. The tool calculates upcoming execution times by iterating forward from the current date and matching each field against the cron expression.
Can I paste an existing cron expression to decode it?
Yes. Paste any valid five-field cron expression into the text input and the builder will update to match, showing a human-readable description and next run times.
Is any data sent to a server?
No. All parsing, generation, and scheduling calculations happen in your browser. Nothing is transmitted.

Build cron expressions with an intuitive visual interface or paste an

existing expression to decode it. Each field (minute, hour, day of month,

month, day of week) supports "every", specific values, ranges, and

intervals. See a live human-readable description and the next five

execution times. Copy the generated expression with a single click. All

processing runs entirely in your browser.

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