Cron expression explainer

How to use it

1. Type or paste a five-field cron expression.
2. Read the description.
3. Check the next run times.

Nothing you paste leaves this page

The conversion runs in this browser tab. Nothing is sent to Sellstamp or anyone else, which matters for configuration files, customer exports and tokens.

Standard five-field cron

Minute, hour, day of month, month and day of week, with *, lists, ranges, steps and month or day names. The description comes from the cRonstrue library (MIT). The next runs are computed here, in your browser’s time zone; your server may use another, often UTC.

When both day of month and day of week are set, cron runs on a day that matches either, which surprises people; the next-run list shows the real effect.