Cron Expression Generator
Build cron expressions visually or parse them into human-readable descriptions. See next execution times. 100% client-side.
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What is a Cron Expression?
A cron expression is a string of five fields separated by spaces that defines a schedule for recurring tasks. It originates from the Unix cron job scheduler and is widely used in Linux servers, CI/CD pipelines, cloud functions, and task scheduling systems like GitHub Actions, AWS CloudWatch, and Kubernetes CronJobs.
Cron Syntax
The five fields are: minute (0-59), hour (0-23), day of month (1-31), month (1-12), and day of week (0-6, where 0 is Sunday). Special characters include * (every), */n (every n), comma for lists, and hyphen for ranges.