Developer Essentials · Free Tool

Cron Expression Builder

Write or paste a cron expression and instantly see it in plain English, plus the next run times. Handy presets included. Runs entirely in your browser.

Cron expression (minute · hour · day-of-month · month · day-of-week)

Meaning

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Next runs (your local time)

How it works

A cron expression has five fields — minute, hour, day of month, month, day of week — each accepting *, ranges (1-5), lists (1,3,5) and steps (*/15). This tool parses those into the set of allowed values, describes the schedule in plain language, and steps forward minute by minute to find the next run times. Per cron convention, when both day-of-month and day-of-week are restricted, a match on either counts. All computed locally.