Cron Expression Parser & Next Runs

Parse a 5-field UNIX cron string (minute hour day-of-month month day-of-week), see the next ten run times in your local timezone and UTC, and use presets for common schedules.

Runs in browser

Fields: minute hour dom month dow — Sunday can be 0 or 7 depending on engine; cron-parser follows common UNIX semantics.

Presets

What you get from this cron reader

  • Immediate validation with helpful parser errors when syntax drifts.
  • Readable hints for presets plus room for custom expressions.
  • Ten upcoming executions in both local and UTC clocks for distributed teams.
  • One-click copy of the summary block for tickets or runbooks.

How to read the output

  1. Enter or paste your five cron fields in standard UNIX order.
  2. Use presets to baseline common jobs, then tweak individual fields.
  3. Click parse to refresh the next-ten list whenever you edit the string.
  4. Compare UTC vs local lines when filing incidents across regions.

Ideal workflows

SRE rotations, marketing drip schedules, and data pipeline windows all depend on cron literacy. Document the expression alongside infrastructure code and cross-link automation notes in JSON configs for reproducible releases.

Need human-friendly numbers too?

Combine scheduling math with the scientific and financial calculators when you are estimating runtime budgets or SLA windows.

Works great with these tools

Cron outputs often feed JSON APIs — validate payloads with our free JSON formatter.

Encoding secrets for CI variables? Use our free Base64 encoder alongside schedule checks.

Need quick date offsets or financial math around job windows? Use our free online calculators.

Last updated:

How to use this tool

Use the Cron Expression Parser to understand schedule strings before adding them to servers, jobs, dashboards, or automation tools. Paste a cron expression, validate the syntax, read a plain-language explanation, and check upcoming run times so scheduled tasks are easier to debug.

Step 1

Open the Cron Expression Parser and enter the text, URL, file, or settings the tool asks for.

Step 2

Review the options, adjust any settings, and run the tool to generate the result.

Step 3

Check the output, copy or download it if available, and use the related tools below for the next step.

Features

  • Cron expression validation
  • Plain-language schedule explanation
  • Next run time list
  • Helpful presets

Common use cases

  • Validate cron syntax
  • Explain scheduled jobs
  • Check next run times
  • Debug automation schedules

Why use this tool?

Cron Expression Parser is built for quick, practical work without making you create an account first. It keeps the interface focused, works on mobile and desktop, and pairs naturally with related ToolsRacks utilities such as JSON Formatter and Robots.txt Generator & Tester.

Frequently asked questions

Common questions people ask before using this tool.

What is a cron expression?

A cron expression is a schedule pattern used to run jobs at specific times.

Can I see the next run time?

Yes. The parser lists upcoming run times for valid expressions.

Why is my cron expression invalid?

It may have the wrong number of fields, unsupported values, or an invalid range.

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