Cron Next Run Times

What this cron tool does

Paste a cron expression and this tool shows you a plain-English description of the schedule plus the next times it will fire — entirely in your browser, so nothing you type leaves your machine. It's the quickest way to sanity-check a crontab line, a scheduled job, or a CI trigger before you ship it.

All times are computed and shown in UTC.

Supported syntax

The tool understands standard 5-field crontab syntax:

┌───────────── minute (0-59)
│ ┌─────────── hour (0-23)
│ │ ┌───────── day of month (1-31)
│ │ │ ┌─────── month (1-12 or JAN-DEC)
│ │ │ │ ┌───── day of week (0-7 or SUN-SAT; 0 and 7 are Sunday)
│ │ │ │ │
* * * * *

Each field accepts:

• * — every value
• a single number, e.g. 5
• ranges A-B, e.g. 1-5
• steps */S and A-B/S, e.g. */15, 0-30/10
• lists A,B,C, e.g. 0,15,30,45
• three-letter month names (JAN-DEC) and weekday names (SUN-SAT)

You can also add a leading seconds field (6 fields total), e.g. */30 * * * * * runs every 30 seconds.

When both day-of-month and day-of-week are restricted, a time matches if either matches — the classic Vixie-cron behavior.

Shortcuts

@yearly (@annually), @monthly, @weekly, @daily (@midnight) and @hourly are all accepted.

Examples

• */15 * * * * — every 15 minutes.
• 0 9 * * MON-FRI — 09:00 on weekdays.
• 0 0 1 * * — midnight on the first of every month.
• 0 0 13 * FRI — every Friday and the 13th of each month, at midnight.
• 0 0 29 2 * — only on a leap-year February 29th.

Options

• After — leave blank to start from now, or give an ISO-8601 / RFC-3339 UTC timestamp (or a Unix epoch second) to preview the schedule from any point in time.
• How many runs — 1 to 100 upcoming times (default 5).
• Output format — text for an aligned, readable list, or json for a machine-readable object ({ iso, epoch, weekday } per run) you can pipe into other tooling.

FAQ