Developer·Updated 2026-04-21
Cron Expression Builder
Translate cron expressions to plain English and preview the next runs.
Cron Expression Builder
How it works
- 1.
Enter an expression
Type a cron expression (for example 0 9 * * 1-5 for 'every weekday at 9am') or pick a preset from the list. The syntax is validated live.
- 2.
Read the plain-English summary
The translation appears immediately below so you can see what your expression actually does.
- 3.
Verify next runs
The next 5 run times are computed instantly and displayed in your browser's timezone. Perfect for sanity-checking complex expressions.
FAQ
Which cron dialect is supported?+
Standard Unix cron with five fields: minute, hour, day, month, weekday. Ranges (1-5), lists (1,3,5) and steps (*/5) are supported.
Do predictions match my server's clock?+
The preview uses your browser's local time. If your cron runs in UTC, adjust the timezone mentally.
Are there usage limits?+
The preview is always free. Premium features and batch export are available on Pro.