⏰ Cron Expression Builder

Build cron expressions visually and see a plain-English explanation with next 5 run times.

🔒 Runs entirely in your browser — nothing is sent to any server
Describe your schedule in plain English
Or pick a preset
Field timezone:
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PlatformExpression
Linux / macOS
crontab -e
GitHub Actions
schedule: cron:
Kubernetes
CronJob spec
GitLab CI
pipeline schedules
AWS EventBridge
6-field + year
Quartz / Spring
6-field + seconds
Seconds prepended — @Scheduled & Java jobs
Jenkins
pipeline trigger
Replace * with H in Jenkins for automatic load spreading

When to use this

💾
Schedule backupsSet a nightly or weekly backup job. Build the expression here, then paste it into crontab or your CI/CD config.
📊
Automated reportsRun a report every Monday morning or on the 1st of each month — get the expression right before wiring it up.
🧹
Cleanup jobsClear temp files, expire sessions, or archive old records on a schedule. See exactly when it'll run before deploying.
📖
Read an existing expressionGot a cron string in a config file you don't understand? Paste it into the fields and see it described in plain English.

Field reference

* — every value
*/5 — every 5th
1-5 — range (Mon–Fri)
0,12 — specific values