What do the five fields mean?

In order: minute (0–59), hour (0–23), day of month (1–31), month (1–12), day of week (0–6, Sunday = 0). An asterisk means “every”.

How do day-of-month and day-of-week interact?

In standard cron, when both are restricted the job runs when either matches — a common surprise. Restrict only one of the two unless you want that OR behavior.

Cron Expression Builder

Point, click, get the crontab line.

MinuteHourDay of monthMonthDay of week

Cron expression

0 9 * * 1-5

At 9:00 AM, Monday through Friday

Field order: minute · hour · day of month · month · day of week (0 = Sunday).

Start from a preset or type each field's pattern and watch the five-field cron expression assemble itself, with a plain-English readback so you can confirm “0 9 * * 1-5” really means weekday mornings at 9.

How to use it

1.Pick a preset, or set each field's pattern.
2.Read the live English description of the schedule.
3.Copy the finished cron expression.

Questions people ask

What do the five fields mean?: In order: minute (0–59), hour (0–23), day of month (1–31), month (1–12), day of week (0–6, Sunday = 0). An asterisk means “every”.
How do day-of-month and day-of-week interact?: In standard cron, when both are restricted the job runs when either matches — a common surprise. Restrict only one of the two unless you want that OR behavior.

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