About Cron Expression Parser

Cron Expression Parser turns a cron line into a readable sentence and lists the next times it will fire, in UTC. It understands the five standard fields, plus an optional leading seconds field, with ranges, lists, steps, and month and weekday names.

Parsing and the run search happen in your browser. Nothing is uploaded.

How to use it

  1. Type a cron expression, or load one of the examples.
  2. Read the plain-English description.
  3. Set how many upcoming run times to show; each one copies on click.

Common questions

What time zone are the run times in?

UTC. The search steps forward from the current moment on your device.

How are day-of-month and day-of-week combined?

If both are restricted, a run matches when either is satisfied, which is how standard cron behaves.

Does it support the seconds field?

Yes. A six-field expression is read as seconds, minutes, hours, day-of-month, month, day-of-week.

Is anything uploaded?

No. It all runs in the page.