DevSuite
Input
Output
// Cron Expression Analysis
Expression:  */15 9-17 * * 1-5

Schedule:    "Every 15 minutes, between 09:00 AM and 05:59 PM, Monday through Friday"

// Field Breakdown
──────────────────────────────────────────────────
Minute         │ */15       → Every 15 minute(s)
Hour           │ 9-17       → Range 9-17
Day (Month)    │ *          → Every day (month)
Month          │ *          → Every month
Day (Week)     │ 1-5        → Range 1-5
──────────────────────────────────────────────────

Free Online Cron Expression Parser

Translate cron expressions into plain-language schedules and inspect each field of a cron expression. DevSuite makes it easier to understand recurring jobs used by servers, schedulers, CI pipelines, and automation tools.

What is a cron expression?

A cron expression describes when a recurring task should run. The traditional five-field format is minute, hour, day of month, month, and day of week. Some environments also support a sixth field for a command or seconds, so always check the scheduler's syntax when moving expressions between systems.

How to read cron syntax

An asterisk means every permitted value for a field, a slash expresses an interval, a hyphen expresses a range, and commas separate specific values. For example, */15 9-17 * * 1-5 represents a schedule that runs every 15 minutes during the specified weekday hours.

How to use the parser

Enter a five-field or supported six-field cron expression and choose Parse Schedule. DevSuite shows a human-readable description and breaks the expression into its individual fields so you can inspect the schedule before deploying it.

Common cron mistakes

Common issues include confusing day-of-month with day-of-week, using a scheduler-specific syntax in another environment, incorrect ranges, and forgetting that cron schedules are interpreted in a particular timezone. Validate the expression in the environment where it will actually run.

Common cron use cases