Cron Explainer

Cron Explainer is a free online cron translator. Paste any cron expression and read it in plain English, see exactly when it will run next, and inspect every field — all computed locally in your browser, nothing sent anywhere.

Supports 5-field cron plus 6-field with seconds (0 */5 * * * *). Ranges (9-17), steps (*/15), lists (1,15), and names (MON–SUN, JAN–DEC) all work. Shortcuts like @hourly and @daily are expanded automatically. Day-of-month and day-of-week follow classic cron OR semantics: when both are restricted, either one triggers.