Cron Expression Builder & Explainer

All Tools

Text

Quick Summary

Translate any 5-field cron schedule into plain English, validate it, and see the next five times it will actually run.

Interactive Client Prototype Sandbox

Cron expression (min hour day-of-month month day-of-week)

minhourdaymonthweekday

Meaning

At minute(s) 0, 15, 30, 45 past hour(s) 0 on day-of-month 1, 2, 3, 4, 5, 6, 7 on Mon.

Next 5 runs (local time)

Tue, Jun 2, 202612:00 AM

Tue, Jun 2, 202612:15 AM

Tue, Jun 2, 202612:30 AM

Tue, Jun 2, 202612:45 AM

Wed, Jun 3, 202612:00 AM

How to use the Cron Expression Builder & Explainer

Step-by-Step Guide

Type a cron expression (minute hour day-of-month month day-of-week) or pick a preset. The tool describes it, validates it, and lists the next five run times.

Example'*/15 0 1-7 * 1' ➔ 'every 15 minutes past hour 0 on day-of-month 1–7 on Mon' plus the next 5 dates.

Who it's for

Backend developers, DevOps engineers, sysadmins, and anyone writing scheduled jobs.

Core Features

Plain-English description of any 5-field cron expression.
Live validation with clear error messages for bad ranges and steps.
Computes the next five real run times in your local timezone.
One-click presets for the most common schedules.

🛡️ No tracking — your inputs, keys, and details never leave this client sandbox.