Cron Expression Generator

Overview

• Builds a cron expression (the format used to describe a recurring schedule) by specifying minute, hour, day, month, and weekday.

• In addition to the generated cron expression, a plain-language description (such as "Every Monday-Friday at 9:00") is displayed, so you can confirm the schedule matches your intent without memorizing the syntax.

• Supports cron-specific notation such as ranges (1-5), lists (1,3,5), and steps (*/15).

Usage

1. 1

   Enter a value into each of the minute, hour, day, month, and weekday fields (supports *, numbers, ranges, lists, and steps).

2. 2

   Click the "Generate" button.

3. 3

   The generated cron expression and a plain-language description of its meaning are displayed.

Example

minute: 0, hour: 9, day: *, month: *, weekday: 1-5

0 9 * * 1-5
Every Monday-Friday at 9:00

Use Cases

• Building a cron expression for scheduling a CI/CD pipeline or batch job (GitHub Actions, crontab, etc.)

• Creating an accurate cron expression from a requirement such as "9am on weekdays" or "midnight on the 1st of every month"

• Re-entering an existing cron expression's fields to confirm, via the description, that it means what you intended

FAQ

Notes

• A field left empty is treated as "*" (every value).

• How the time is interpreted (its timezone) can differ depending on the execution environment (cron, GitHub Actions, etc.). Check the specification of your actual execution environment too.

• The generated result exists only on the page and is lost on reload, so copy and save it if you need to keep it.