Read cron
Paste a cron expression and we tell you what it means and when it will actually run. The second answer is what exposes mistakes: a “31 February” never fires.
Your text stays on your device: nothing is uploaded
Result
Paste something on the left: the result appears as you type.
How it works
The five fields are minute, hour, day of month, month and day of week. The rule that surprises almost everyone is the last one: when both the day of month and the day of week are restricted, cron combines them with an OR, not an AND. “0 0 13 * 5” does not mean “Friday the 13th”: it means every Friday and additionally every 13th. If that is what you wanted, fine; if not, the list of next runs tells you straight away, which is why this tool computes them rather than just translating. The dates are in UTC, the timezone almost every server scheduler runs in; if yours runs in another, shift accordingly. We recognise English day and month names, Sunday written as either 0 or 7, and aliases like @daily.
What you paste is never uploaded. Anywhere.
Not to a server of ours, not to a third party, never. The text you type stays in your browser’s memory: it is read, processed and shown here, and you copy it. There is no path that takes it elsewhere, because there is no server to send it to. You can paste something confidential.
- Processed locallyThe computation happens on this page, using the browser’s own engine: no request goes out while you type.
- Nothing to upload, nothing to wait forOther services send your file to a server and then send it back to you. Here the file never leaves: there is no upload to wait for.
- No accountNo sign-up, no email, no daily limits to get around by paying.
- Nothing to deleteOthers promise to delete what you paste after an hour. We have nothing to delete: it never reached us.