Cron Expression Parser & Generator

Parse cron expressions into plain English and generate cron schedules with a visual builder. See next 10 run times.

Free Always No Account Needed 100% Client-Side
MINHOURDOMMONTHDOW

About this tool

Cron expressions are a compact notation for scheduling recurring tasks. A standard expression has five fields: minute, hour, day-of-month, month, and day-of-week. Extended formats add a seconds field or year field.

This tool parses any cron expression and translates it to plain English (e.g., 0 9 * * MON-FRI → "At 09:00 AM, Monday through Friday"). It also shows the next 10 scheduled run times relative to now.

The visual builder lets you construct cron expressions without memorizing syntax — pick your frequency, time, and days from dropdowns and the expression is generated automatically.

Supports standard 5-field cron, extended 6-field (with seconds), and AWS EventBridge / Quartz scheduler formats.

Frequently Asked Questions

What does '*/15 * * * *' mean?
Every 15 minutes.
What is the difference between 5-field and 6-field cron?
5-field cron (standard Unix) starts with minutes. 6-field (used by Quartz/Spring) starts with seconds.
Why does my cron expression show different times than expected?
Check your timezone. Cron typically runs in server local time (usually UTC). Use the timezone selector to see times in your local zone.
What does '0 0 L * *' mean?
The 'L' character (last) is a Quartz-specific extension meaning the last day of the month.

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