Cron Expression Parser

Parse cron expressions into human-readable descriptions and preview the next scheduled run times.

1. Enter a cron expression (e.g., "0 9 * * 1-5") into the input field. 2. Read the human-readable description that explains when the schedule fires in plain English. 3. Review the list of next 10 upcoming execution times displayed in your local timezone. 4. Use the quick preset buttons to load common schedules like "every hour" or "daily at midnight." 5. Alternatively, use the visual builder dropdowns to construct a new cron expression without memorizing syntax. 6. Copy the finalized cron expression for use in your crontab, CI/CD pipeline, or cloud scheduler.

About This Tool

The Cron Expression Parser translates cron schedule expressions into plain English descriptions and calculates the next several execution times. Enter a cron expression like "0 9 * * 1-5" and instantly see "At 9:00 AM, Monday through Friday" along with the next 10 upcoming run times in your local timezone.

Cron expressions power scheduled tasks across Linux systems, CI/CD pipelines, cloud functions, and job schedulers. Their compact syntax - five or six fields representing minute, hour, day of month, month, and day of week - is powerful but notoriously difficult to read and write correctly. This tool eliminates the guesswork.

The tool supports both standard 5-field cron expressions and extended 6-field variants with seconds. It also provides a visual builder where you can construct expressions by selecting options from dropdowns rather than writing syntax manually. Common presets for schedules like "every hour," "daily at midnight," and "every Monday at 9 AM" are available as one-click shortcuts.

Frequently Asked Questions

A cron expression is a string of five (or six) fields separated by spaces that defines a time schedule. The fields represent minute, hour, day of month, month, and day of week. Special characters like * (any), , (list), - (range), and / (step) allow flexible scheduling.

The five standard fields are: minute (0-59), hour (0-23), day of month (1-31), month (1-12 or JAN-DEC), and day of week (0-7 or SUN-SAT, where both 0 and 7 mean Sunday). Some systems add a seconds field at the beginning.

The /5 syntax means "every 5th interval." So */5 in the minutes field means "every 5 minutes" (0, 5, 10, 15, ..., 55). Similarly, */2 in the hours field means "every 2 hours."

Use 1-5 in the day of week field (Monday through Friday). For example, "0 9 * * 1-5" runs at 9:00 AM every weekday. Some systems also accept MON-FRI instead of numeric values.

Yes. The next execution times are displayed in your browser local timezone. The tool also shows UTC equivalents for each time, which is useful since many server cron jobs run in UTC.

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