What does Cron Expression Parser actually do?

The cron parser explains a 5-field expression (minute, hour, day of month, month, day of week) and lists upcoming runs. It does not support a seconds field. Day-of-month and day-of-week together follow common cron rules that surprise people. The schedule is not installed on a server.

Does this support 5-field and 6-field cron expressions?

It parses standard 5-field cron (minute, hour, day-of-month, month, day-of-week) into a readable summary and next run times. Six-field expressions with seconds are not supported.

Is my cron expression uploaded?

No. Parsing and previews run in your browser.

Yes — free online cron parsing with no account.

Cron Expression Parser

Parse a cron expression into human-readable descriptions and see the next run times. Free online — runs locally, no upload.

Cron Expression

Format: minute hour day-of-month month day-of-week

Next 10 Runs0

No upcoming runs computed.

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Cron Expression Parser