Grátis Cron expression parser
Enter a standard five-field cron (minute hour day-of-month month day-of-week) or a macro like @daily. The next five executions are computed from your device clock in your local timezone, alongside a plain-language summary powered by cronstrue. Nothing is uploaded.
How to use this tool
- 1
Abrir Cron expression parser
Confirme primeiro se ele atende à sua tarefa: Previa de cron, proximas 5 execucoes, explicacao em linguagem clara, parse local.
- 2
Adicione o conteúdo
Insira ou envie os dados pedidos no painel e ajuste as opções visíveis.
- 3
Use o resultado
Confira a prévia e copie ou baixe o resultado quando estiver pronto.
Quick facts
| Runs offline? | Yes — after scripts load, parsing uses only your browser. |
|---|---|
| Which cron flavor? | This page targets common Unix-style five-field crons and @yearly, @monthly, @weekly, @daily, @hourly style macros as supported by cron-parser. |
| Are expressions sent to a server? | No. Safe Local Tools is static; schedules are evaluated in this tab only. |
| Does it handle daylight saving time? | Next times follow your OS timezone rules (including DST) via the scheduler library. |
Top use cases
- Previa de cron, proximas 5 execucoes, explicacao em linguagem clara, parse local.
- Runs offline?: Yes — after scripts load, parsing uses only your browser.
- Which cron flavor?: This page targets common Unix-style five-field crons and @yearly, @monthly, @weekly, @daily, @hourly style macros as supported by cron-parser.
- Are expressions sent to a server?: No. Safe Local Tools is static; schedules are evaluated in this tab only.
- Does it handle daylight saving time?: Next times follow your OS timezone rules (including DST) via the scheduler library.
FAQ
Why do my times differ from crontab.guru?▾
This tool uses your device’s local timezone and the libraries bundled on this page. Other sites may default to UTC or a different rule set — always verify against your scheduler (systemd, Kubernetes, cloud vendor).
What about Quartz or Spring six-field crons?▾
Quartz-style expressions (with seconds or extra keywords) are not guaranteed to parse here. Use a Quartz-specific validator for those jobs.
Why only the next five runs?▾
Five is a compact preview for quick sanity checks. Click “Refresh from now” to recompute from the current clock after edits.
Can I pick a timezone?▾
Not on this page — it always mirrors your browser timezone. For fixed UTC schedules, convert mentally or use a host that runs in UTC.
What does the plain-language line mean?▾
It is an automatic English (or localized) summary from cronstrue. Treat it as a helper, not a legal contract with your orchestrator.
Is every valid cron supported?▾
Most everyday patterns work. Rare edge cases or nonstandard extensions may fail — if parsing errors, simplify the expression or consult your platform’s cron documentation.