What is a Cron Expression Generator?
Cron’s five fields are write-only memory — everyone re-learns them, and a swapped field runs your job at the wrong time for weeks.
Presets cover the common schedules; type or edit any expression and read a live plain-English description before you commit it.
How to use the Cron Expression Generator
- Click a preset or type an expression.
- Read the live English description.
- Copy it into crontab, GitHub Actions or your scheduler.
Frequently asked questions
What are the five fields?
minute hour day-of-month month day-of-week, in that order. “0 9 * * 1-5” = 09:00 on weekdays.
What does */5 mean?
Every 5 units — “*/5 * * * *” runs every five minutes.
Is Sunday 0 or 7?
Both work in most crons; this tool uses 0. Ranges like 1-5 mean Monday–Friday.
Which timezone does cron use?
The server’s (or the scheduler’s configured) timezone — always check before scheduling around midnight.