Scheduler helper

Cron Expression Editor & Parser

Edit, parse, and visualize Cron expressions in real-time.
This tool converts complex Cron syntax into human-readable descriptions and calculates the next execution schedules.
Perfect for debugging crontab entries or scheduling backend tasks.

Cron Expression

Human-readable description

Field labels

Minute -

Hour -

Day of Month -

Month -

Day of Week -

Next execution schedules

Guide

How to use & features

Type a Cron expression to update the human description and next run list instantly.
Inspect the minute/hour/day/month/weekday parts to confirm each field’s meaning.
Invalid input triggers an error message so you can fix syntax quickly.
The tool expects the standard 5-field crontab format.

Samples

Sample input & output

5分おきに実行

Input

*/5 * * * *

Output

説明: 5分おきに実行
次回: 00:05, 00:10, 00:15 (例)

FAQ

Frequently asked questions

Which Cron format is supported?

The parser supports the standard 5-field format: minute, hour, day of month, month, day of week.

Which timezone is used?

Next run times are calculated using your browser’s local timezone.

Are 6-field (seconds) expressions supported?

Only 5-field expressions are supported at the moment.

Use cases

Common use cases

Validate job schedules
Translate Cron expressions to confirm the actual run timing.
Support configuration reviews
Share human-readable descriptions to reduce misunderstandings in reviews.
Debug Cron syntax
Inspect each field’s meaning to spot mistakes quickly.

Notes

Notes & limitations

Work stays in your browser
Inputs and outputs remain local. Closing the tab or clearing cache will remove any temporary state.
Validate critical data
Results are helper outputs—double-check them before sending to production systems or sharing externally.
Large payloads depend on your device
Very large text or files can feel slow in some browsers. Use a desktop environment for heavy workloads.