Build cron expressions visually — choose from presets or set each field manually and see the human-readable schedule instantly.
Also work with timestamps using our Unix Timestamp Generator or test patterns with the Regex Tester.
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A cron expression has five fields that define a schedule for automated tasks: minute (0–59), hour (0–23), day of month (1–31), month (1–12), and day of week (0–7, where 0 and 7 both mean Sunday). Special characters control the timing: * means every value, / is a step, - is a range, and , separates a list of values.
This cron expression generator works as a cron job builder, cron schedule creator, and cron syntax helper for developers, DevOps engineers, and system administrators who need to schedule automated tasks on Linux servers, CI/CD pipelines, and cloud platforms.
Developers use cron expressions most commonly on Linux servers via crontab to schedule recurring scripts — database backups, log rotation, email digests, cache warmups, and report generation. Getting the syntax right without a visual tool is error-prone, especially for complex schedules like "every weekday at 9:30am except on the 1st of the month." This generator lets you build that expression by editing individual fields and immediately seeing what schedule it produces in plain language.
DevOps engineers use cron syntax in GitHub Actions workflows under the schedule trigger, in AWS EventBridge rules, in Kubernetes CronJob manifests, and in cloud functions with scheduled triggers. Each platform accepts the standard 5-field cron format, making expressions built here directly usable across all of them. The preset options cover the most common scheduling patterns — every minute, hourly, daily, weekly, monthly, and business-hours-only schedules — so most use cases can be satisfied in one click and then fine-tuned from there. For more complex requirements, each field can be edited independently while the human-readable description updates in real time, confirming that the expression does exactly what you intend before you deploy it.