Cron Expression Explainer
Translate any cron expression into plain English and preview the next run times — free, no upload, in your browser.
At 09:00, on Monday, Tuesday, Wednesday, Thursday, Friday.
- Fri 2026-07-31 09:00
- Mon 2026-08-03 09:00
- Tue 2026-08-04 09:00
- Wed 2026-08-05 09:00
- Thu 2026-08-06 09:00
Fields: minute hour day-of-month month day-of-week
Named schedules supported: @yearly @monthly @weekly @daily @hourly @reboot
🔒 Parsed in your browser — nothing is uploaded.
Understand cron expressions at a glance
Type a standard 5-field cron expression (minute hour day-of-month month day-of-week) and see a
plain-English description plus the next five times it will run. A Local / UTC toggle switches the preview between
your local timezone and UTC — handy because most servers run cron in UTC. Presets cover the most common schedules
so you can start from a known-good pattern.
Supported syntax
Wildcards (*), steps (*/5), ranges (1-5), lists (1,15,30)
and month/day names (JAN, MON) are all understood. When both day-of-month and
day-of-week are set, it follows the standard cron rule of matching either.
Frequently asked questions
What timezone are the next runs shown in?
Either your device's local timezone or UTC — use the Local / UTC toggle above the list. Since most servers run cron in UTC, switching to UTC shows when the job actually fires. The preview uses your browser clock, so no server is involved.
Which cron format is this?
Standard 5-field cron (minute, hour, day-of-month, month, day-of-week), plus named macros — @yearly, @monthly, @weekly, @daily, @hourly and @reboot. Seconds (6-field) are not supported.
What happens with day-of-month and day-of-week together?
Like Vixie cron, when both are restricted a time matches if EITHER the day-of-month OR the day-of-week matches.