⏰ Cron Expression Parser

Paste a standard 5-field cron expression (minute hour day-of-month month day-of-week) to see what it means in plain English and its next few run times. Supports numeric fields, *, */n, ranges (1-5), and lists (1,3,5).

About this tool

Paste a cron expression and get a plain-English explanation ("At 03:00 on every Monday") plus the next several run times, so you can confirm a schedule before it goes into a crontab, GitHub Actions workflow, Kubernetes CronJob or cloud scheduler.

Supports the standard five-field syntax with ranges, lists and steps, and flags invalid expressions immediately.

How to use it

  1. Type or paste the cron expression (five fields: minute hour day month weekday).
  2. Read the explanation and the list of upcoming run times.
  3. Adjust until the schedule reads the way you intended.

Frequently asked questions

Which cron syntax is supported?

The standard five-field POSIX/Vixie cron format used by Linux crontab, GitHub Actions, Kubernetes and most cloud schedulers. Seconds fields and Quartz-style expressions are not supported.

In which time zone are the run times?

Your browser's local time zone. Remember that servers often run in UTC.

What does */15 mean?

Every 15 units — in the minute field, "at :00, :15, :30 and :45 of every hour".

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