Cron Expression Generator

This tool translates common schedule descriptions into standard five-field cron expressions. Say “daily” and get 0 0 * * *; say “hourly” and get 0 * * * *. Descriptions that don't match a preset receive a sensible default (every fifteen minutes) with a note.

It is a focused translator for the schedules people actually use, rather than an attempt to parse every possible English phrasing — the common cases are covered reliably.

Each generated expression includes its meaning in plain language, so you can confirm the schedule matches what you intended before pasting it into your job scheduler.

The tool scans your description for schedule keywords. “Daily” maps to a midnight daily schedule, “hourly” to the top of every hour, and other recognized patterns to their corresponding expressions; unrecognized input falls back to a default with guidance.

The mapping is a local lookup — no server call, so your descriptions stay private.

The output shows the cron expression alongside its human-readable meaning.

Cron is the standard job scheduler on Linux and Unix systems, and cron expressions are also used by cloud platforms and CI systems. A standard expression has five fields: minute, hour, day of month, month, and day of week — each accepting a value, a range, a list, or a wildcard.

Daily at midnight is 0 0 * * * (minute 0, hour 0, every day). Every hour on the hour is 0 * * * *. Every fifteen minutes is */15 * * * *. These presets cover a large share of real scheduling needs.

Cron has quirks worth knowing: the day-of-month and day-of-week fields interact (in most implementations, if both are restricted, either match), and cron uses the server's local timezone unless configured otherwise. The generated presets avoid these edge cases by design.