Cron Expression Parser
Explain & preview cron schedules
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Cron Expression Parser
Explain & preview cron schedules
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About this tool
Parse a cron expression, see the parsed fields and preview the next execution times in your timezone.
The Cron Expression Parser is a developer and sysadmin essential that takes a cron expression and produces a human-readable explanation of exactly when the job will run — including the next 5 scheduled execution times. It bridges the gap between cryptic five-field cron syntax and the practical understanding you need to verify that a scheduled task will fire at the intended moments.
Supporting standard 5-field cron (minute, hour, day-of-month, month, day-of-week), extended 6-field cron with seconds, and special expressions like @yearly, @monthly, @weekly, @daily, and @hourly, the parser correctly interprets ranges (1-5), steps (*/5, 1-10/2), lists (1,3,5), and named day/month abbreviations. It handles edge cases like February 30th gracefully, reporting invalid expressions clearly.
For DevOps engineers, SREs, and backend developers managing cron jobs across servers, this tool eliminates the need to mentally decode expressions or install CLI utilities. Everything runs client-side — your cron schedules and server configuration details stay on your machine.
Key features
Everything you get with Cron Expression Parser — no premium upsell.
Standard 5-field and extended 6-field (with seconds) cron parsing
Special expressions: @yearly, @monthly, @weekly, @daily, @hourly
Support for ranges, steps, lists, and named day/month abbreviations
Next 5 execution times computed from the current moment
Clear human-readable description of each cron field
Client-side processing with zero server calls
How to use Cron Expression Parser
Follow the steps below to use the tool.
- 1
Enter Cron Expression
Type or paste your cron expression (e.g., 0 2 * * 1-5 or @weekly) into the input field.
- 2
View Description
The tool instantly shows a plain-English description of what the expression means in each field.
- 3
See Next Executions
A list of the next 5 dates and times the cron job will run is displayed, computed from the current time.
- 4
Fix Invalid Expressions
If the expression is syntactically invalid, a clear error message explains what's wrong and suggests a correction.
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Launch Cron Expression ParserFrequently asked questions
Quick answers before you launch the tool.
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