Cron Expression Parser
Parse a 5-field cron expression and read it back in plain English. Each field is shown on its own, so you can see which one drives the schedule.
Every 5 minutes
Common examples:
How to use
- 1 Type or paste a cron expression of exactly 5 fields into the input field.
- 2 Each field is shown on its own, so you can see which one drives the schedule and which one is a wildcard.
- 3 The tool reads the expression back in plain English, one field at a time.
- 4 Use it to check a cron line before pasting it into a crontab or a workflow file.
Key features
- Parses standard 5-field cron expressions
- Splits the expression into its five fields on screen
- Reads the expression back in plain English, field by field
- Recognises day and month names, lists, ranges and steps
What is a Cron Expression Parser?
A Cron Expression Parser translates the compact 5-field cron syntax into plain English, so you can instantly understand when a scheduled job will run without memorising the syntax. Each field is shown on its own, so you can see at a glance which one drives the schedule and which one is a wildcard.
Cron is the standard scheduler for Unix/Linux systems, and its syntax is used across dozens of platforms: GitHub Actions, Kubernetes CronJobs, AWS EventBridge, Heroku Scheduler and more. A single misread field can mean a job runs every minute instead of every month.
When to Use This Tool
Auditing existing schedules
Paste a cron expression from a legacy codebase or CI config and instantly confirm what it actually does.
Debugging unexpected job runs
Check why a job ran at 3am on a Sunday. Read the fields back one at a time before touching the expression.
Explaining schedules to non-devs
Convert `0 9 * * 1-5` into "Every weekday at 9:00 AM" for a Slack message or ticket description.
Validating before deploying
Confirm `*/5 * * * *` means every 5 minutes, not every 5 hours, before pushing a GitHub Actions workflow.
Quick Examples to Try
Click any expression to load it in the parser above.