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Cron Expression

Validate cron syntax, apply common presets, and preview future run times across timezones.

Common Presets

Click a preset to fill the expression and inspect the schedule immediately.

Expression valid

Analysis

Shows the normalized expression, field breakdown, and the next 5 run times.

Normalized Expression

*/5 * * * *

Every 5 minutes, every day, every month.

Field Breakdown

Minute

*/5

Hour

*

Day of Month

*

Month

*

Day of Week

*

Upcoming Runs

UTC
#1Wed, May 27, 2026, 16:45:00
#2Wed, May 27, 2026, 16:50:00
#3Wed, May 27, 2026, 16:55:00
#4Wed, May 27, 2026, 17:00:00
#5Wed, May 27, 2026, 17:05:00

Cron Expression Parser

Understand the cron rule before you ship it

The hard part of cron is rarely writing the expression. The real risk is shipping a schedule without being sure when it will actually run. This page turns the expression into something you can verify.

Common use cases

•Check whether a scheduled job will run at the intended time before deployment.
•Inspect timezone shifts when a task runs in different regions.
•Use presets to create hourly, weekday, or monthly rules faster.

Example: run at 09:00 on weekdays

Most teams do not need to memorize every cron field. They need a fast way to confirm what the rule actually means.

Example expression

0 9 * * 1-5

Interpreted result

Runs at 09:00 on weekdays, with the next 5 occurrences available for preview.

FAQ

Showing the most misunderstood cron questions on the page is more useful than leaving the user with only an input box.

What can this cron page do?

It validates expressions, shows normalized output, explains field rules, and previews the next scheduled run times.

Does it support timezone-based preview?

Yes. You can switch the reference timezone and compare how the same cron expression behaves across regions.

Does it support both 5-field and 6-field cron expressions?

Yes. It supports common 5-field cron syntax and also parses 6-field expressions that include seconds.

Related tools

Scheduled jobs are often paired with timestamp, encoding, or validation workflows.

Timestamp Converter

Auto-detect seconds/milliseconds, support multiple timezones

Open Tool →

JSON Editor

Dual-panel editor with real-time editing, validation and formatting support

Open Tool →

Base64 Encode/Decode

Text and Base64 conversion with image preview and file drag-and-drop

Open Tool →

Why it helps before deployment

This page does more than tell you whether the syntax is valid. It helps you see when the schedule will actually run.

Includes presets for common schedule patterns.
Preview future run times before shipping a job.
Validate expressions without switching to the terminal first.