Cron Expression Humanizer

クロン式を人間の読み取り可能な説明に変換し、次の実行時間を予測する

Choose between 5-field standard format or 6-field extended format with seconds
状態:
有効
Load a random sample cron expression to test
Clear the cron expression input and results

クロンの表現

5フィールド形式 (左から右):

分:0-59
時間:0-23
月の日:1-31
月:1-12
曜日:0-7(0および7 =日曜日)

人間の説明

人間の読み取り可能な説明がここに表示されます...

Cron Expression Guide

特殊文字

* - 任意の値(ワイルドカード)
? - 特定の値はありません(デイフィールドのみ)
- - 値の範囲(例:1-5)
, - 値のリスト(例:1,3,5)
/ - ステップ値(たとえば、 */2)

一般的な例

0 9 * * 1-5 - 平日午前9時
30 14 1 * * - 午後2時30分の月
0 */6 * * * - 6時間ごと
0 0 * * 0 - 毎週日曜日の真夜中

Cron Expression Humanizer - Cron Job Scheduler Tool

Cron expressions define schedules using compact syntax. This page translates cron into human‑readable text and helps you validate when jobs will run, including edge cases across timezones.

What is a cron expression?

A standard 5‑field cron uses minutes, hours, day of month, month, and day of week. Extended formats add seconds or year. Wildcards, ranges, lists, and step values control frequency—for example, 0 0 * * 1 runs every Monday at midnight.

How humanization works

The tool parses your expression, expands fields into actual run times, and renders a friendly description. It highlights conflicts, shows upcoming run instances, and can simulate different timezones so you see the real behavior in production.

About the Cron Humanizer

Use it to review schedules during code review, communicate timing to non‑technical stakeholders, and ensure that daylight saving transitions won’t break expectations.

Readable schedules reduce operational toil. Document intent alongside expressions and verify edge cases before deploying.