Cron Parser & Builder
Parse cron expressions to English, validate syntax, and preview next run times. Use this free online tool directly in your browser.
Supports wildcards (`*`), ranges (`1-5`), lists (`1,3,5`), and intervals (`*/10`).
Every 15 minutes, between 09:00 AM and 05:59 PM, Monday through Friday
- 2/19/2026, 4:45:00 PM
- 2/19/2026, 5:00:00 PM
- 2/19/2026, 5:15:00 PM
- 2/19/2026, 5:30:00 PM
- 2/19/2026, 5:45:00 PM
Cron Parser & Builder helps developers, designers, and content teams complete repetitive tasks faster. It is built for quick copy-and-paste workflows and practical day-to-day use.
How to use
- Paste or enter your data in the Cron Parser & Builder input area.
- Run the conversion, generation, or validation action.
- Copy or download the result for your project workflow.
Try an Example
Example Input
0 9 * * 1-5
Expected Output
Every weekday at 09:00
Frequently Asked Questions
What is Cron Parser & Builder?
Cron Parser & Builder is a free browser-based utility on Bite Size Tools. Parse cron expressions to English, validate syntax, and preview next run times.
Is Cron Parser & Builder safe to use with sensitive data?
Yes. Tool processing runs in your browser, so your input is not sent to a server by default in this app.
Can I use Cron Parser & Builder for production work?
Yes. You can use the output directly in development and production workflows after validating it with your project requirements.