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Cron Expression Explainer

Paste any cron schedule and get it in plain English — plus the next times it will run.

By Nasir Uddin Khan · Oracle DBA (18+ yrs)
Examples: */15 * * * *0 3 * * 1-50 0 1 * *@daily

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What is a cron expression?

A cron expression is the five-field schedule used by Unix/Linux crontab, database jobs and schedulers to say when a task runs. The fields are minute, hour, day-of-month, month, day-of-week. This tool translates it to plain English and lists the next run times — all in your browser.

FAQ

What do the five fields mean?

In order: minute (0–59), hour (0–23), day of month (1–31), month (1–12), day of week (0–6, where 0 and 7 are Sunday). * means "every".

Why do day-of-month and day-of-week behave oddly together?

Standard cron uses OR when both are set: 0 0 13 * 5 runs on the 13th or any Friday. This tool follows that rule.

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