Cron builder & explainer

Turn cron schedules into plain English - and build them back. Paste an expression to see what it does and when it fires next (in your timezone), or pick options to generate one. Handles 5-field and 6-field (seconds) cron plus @-aliases. 100% in your browser.

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Cron expression

What it means

At 09:00 on weekdays (Mon–Fri).

Minute00

Hour99

Day of month*any day

Month*any month

Day of week1-5weekdays (Mon–Fri)

Next runs - UTC

Mon, Sep 28, 2026 · 09:00 AM
Tue, Sep 29, 2026 · 09:00 AM
Wed, Sep 30, 2026 · 09:00 AM
Thu, Oct 1, 2026 · 09:00 AM
Fri, Oct 2, 2026 · 09:00 AM

Computed in UTC; shown as wall-clock local time.

Builder

everyminutes

Building sets the expression on the left - edit it freely afterwards; it is re-parsed live.

Quick presets

Field reference

minute 0-59 · hour 0-23 · day-of-month 1-31 · month 1-12 (JAN-DEC) · day-of-week 0-7 (0 and 7 = Sunday; SUN-SAT)

A 6th leading field is treated as seconds. @hourly, @daily, @midnight, @weekly, @monthly, @yearly and @reboot are recognised.

When both day-of-month and day-of-week are restricted, the schedule fires when either matches (the classic cron union rule).

Times are wall-clock in your local timezone. On DST change days a non-existent time is skipped and a repeated time fires once - like system crons.