Cron Expression Parser
Paste a five-field cron expression to see a description and the next five run times in your local time zone. Useful when reviewing CI jobs, scheduled functions and maintenance windows.
Key facts
- Category
- Developer & Data
- Price
- Free
- Account
- Not required
- Processing
- In your browser
- Input
- Local files or pasted data
- Platform
- Modern desktop and mobile browsers
What it does
Paste a five-field cron expression to see a description and the next five run times in your local time zone. Useful when reviewing CI jobs, scheduled functions and maintenance windows.
Explain a five-field cron expression and show the next run times.
How to use it
Here is the short version of using Cron Expression Parser.
- Enter the expression — minute hour day-of-month month day-of-week.
- Read the description — The next five runs are calculated locally.
- Check the time zone — Cron runs in the server's time zone, not necessarily yours.
Features that matter
What Cron Expression Parser does well.
- Nothing leaves your device — The work happens in your browser tab. There is no upload endpoint in this app, so your files and text cannot be stored, logged or seen by us.
- No upload wait — You skip the round trip to a server entirely. Results are limited by your own CPU, not by network speed or queue size.
- Free, no account, no quotas — No sign-up wall, no watermark, no daily limit. Optional accounts only exist to save favourites and presets across devices.
Frequently asked questions
Is my schedule safe to use here?
Yes. This tool runs entirely in your browser using JavaScript. Nothing you paste or open is sent to a server, and the page keeps no copy after you close it.
Do I need to create an account?
No. Every tool is fully usable without signing in. An account only adds saved favourites and reusable presets.
Does it work on a phone?
Yes. The interface is mobile-first with large touch targets and a stacked layout, so it works on phones and tablets as well as desktops.
Does it support six-field cron with seconds?
No. This parser expects the classic five fields. Quartz-style six-field expressions are not supported.
How are day-of-month and day-of-week combined?
Standard cron treats them as an OR when both are restricted. This parser follows that behaviour.
Open Cron Expression Parser
Try it now — it runs in your browser and needs no account.
Open the tool