Cron Expression Parser Online — Next Run Times
Paste a standard 5- or 6-field cron expression (or a supported @ alias) and see a live human-readable schedule, field breakdown, and next fire times in UTC or your local timezone — all in your browser.
How parsing works
Type a cron expression (or pick a preset) — parsing updates live. Choose 5 or 6 fields, how many next runs to list, and UTC vs local display. Matching always uses UTC calendar fields; the timezone option only changes how times are shown.
Options
- Field count (5 / 6)
- 5 fields is classic crontab (minute hour day-of-month month day-of-week). 6 fields prepends seconds for schedulers that support them.
- Next runs (5 / 10 / 25)
- Show enough upcoming fires for planning without flooding the list.
- Timezone (UTC / local)
- Align the next-run list with ops expectations — UTC for servers, local for wall-clock checks.
Examples
Every 5 minutes
Expression
Meaning
Every 15 minutes (6-field)
Expression
Meaning
Related utilities
Need epoch math? Open the Unix timestamp converter. Generate IDs with the UUID generator.
Cron parser FAQ
Scheduling questions
Are @daily macros supported?
Yes for common aliases: @hourly, @daily / @midnight, @weekly, @monthly, @yearly / @annually. @reboot is not supported (no boot context in the browser). Unknown or malformed @ tokens are rejected.
What day does @weekly use?
@weekly expands to 0 0 * * 0 — Sunday at midnight UTC fields (day-of-week 0).
Is this Quartz or EventBridge cron?
No. This tool targets common Unix-style 5/6-field expressions, not vendor-specific dialects.
Does day-of-month vs day-of-week use OR or AND?
When both day fields are constrained (not *), fire times match if either field matches — common Unix semantics.
UTC matching vs local display?
Next-run matching uses UTC field values. The timezone control only formats the list for display (UTC or your browser local zone).
Is my expression uploaded?
Never — parsing stays in your browser.
Developer utilities
Timestamps, UUID, ULID, Nanoid, cron, passwords, regex, slugify, number bases, case, text diff, and chmod — all client-side.
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