Cron Expression Parser

Parse cron expressions online and calculate the next N run times with 5/6/7-part modes and time zone selection.

Expression Parser

Open Generator

Cron Expression

Waiting for expression parsing.

Mode Next Runs Time Zone

Future Run Times

Next Waiting

Expression */5 * * * *

Time Zone Local

Waiting for parsing.

Cron Rules and Principles

Fields

This tool focuses on parsing cron expressions and calculating future run times. Use the Cron Expression Generator for visual generation. It supports 5-part, 6-part second-level, and 7-part year formats.

* * * * *
秒 分 时 日 月 星期
0 0 9 * * MON-FRI

Wildcards and Ranges

* means any value, , means list, - means range, / means step.

*/5 * * * *      # 每 5 分钟
0 9-18 * * 1-5  # 工作日 9 点到 18 点整点

Special Syntax

Supports month and weekday names such as JAN and MON-FRI, plus advanced syntax like L, W, and #. Support for ?, L, W, and # differs across systems, so check the target system docs before moving expressions to Linux crontab, Quartz, or Kubernetes CronJob.

Date Logic and Time Zones

When both day-of-month and day-of-week are restricted, different systems may use OR or AND logic. Time zones affect actual runs around DST changes; production jobs should use an explicit time zone.