Standard 5-field cron — minute, hour, day-of-month, month, day-of-week. Supports numbers, *, ranges (1-5), lists (1,3,5), and steps (*/15). L/W/# extensions are not supported.

Cron Expression Builder

Edit a 5-field cron expression and see plain-English description plus the next 5 fire times in your local timezone.

Minute
Hour
Day (m)
Month
Day (w)

Cron expression

Description

Next 5 fire times (local)

Supports: numbers (5), wildcard (*), ranges (1-5), lists (1,3,5), steps (*/15). The L, W, # extensions are not supported.

How to use Cron Expression Builder

Type values in the 5 cron fields, or edit the full expression directly.
Read the description and check the next fire times.
Copy the validated expression.

What is Cron Expression Builder?

Cron expressions are dense — small typos lead to jobs that never fire (or fire constantly). This tool parses your expression, describes it in English, and shows you when it will actually fire next so you can verify before deploying.

FAQ

Which cron syntax?: Standard 5-field cron — minute, hour, day-of-month, month, day-of-week. Supports numbers, *, ranges (1-5), lists (1,3,5), and steps (*/15). L/W/# extensions are not supported.

Cron Expression Builder

How to use Cron Expression Builder

What is Cron Expression Builder?

FAQ

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