Thunder Tools

Cron Expression Parser

Enter a standard cron expression (minute, hour, day-of-month, month, day-of-week) to get an instant, plain-language description of the schedule along with the next few times it will run — all computed locally in your browser.

Description

every 15 minutes

Next run times
  • 11/1/2026, 4:15:00 PM
  • 11/1/2026, 4:30:00 PM
  • 11/1/2026, 4:45:00 PM
  • 11/1/2026, 5:00:00 PM
  • 11/1/2026, 5:15:00 PM

How it works

Each of the 5 fields accepts *, a single number, a comma-separated list (1,15,30), a range (1-5), or a step (*/5). The tool parses all five fields and shows you what the schedule means in plain language, plus the next 5 matching run times starting from now.

Tip

A leading */15 in the minute field means "every 15 minutes." Leave a field as * to match every possible value for that field.

What format does it expect?

Standard 5-field cron syntax: minute hour day-of-month month day-of-week, for example */15 * * * * for every 15 minutes. Seconds and special strings like @daily are not supported.

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