Cron Next Runs

Shows the next scheduled run times for a cron expression.

Cron Next Runs takes a cron expression and shows the next scheduled run times as ISO 8601 timestamps in UTC. It's handy when you're writing a crontab entry or scheduling a job and want to confirm exactly when it will fire. Paste your cron schedule, set how many upcoming runs you want, and read off the next execution times.

Common uses

  • Verify a new crontab line fires at the times you expect before deploying it
  • Preview the next several run times for a scheduled job or CI pipeline
  • Debug a cron expression that seems to run too often or not at all
  • Sanity-check schedules copied from documentation or generated by another tool
  • Explain to a teammate when a recurring task will next execute

FAQ

Is my data sent to a server?

No. The tool runs entirely in your browser using a JavaScript cron parser. Your cron expression is never uploaded or stored anywhere.

What timezone are the run times shown in?

All run times are computed and displayed in UTC and formatted as ISO 8601 timestamps. The expression is always evaluated against the current time when you run it.

How many upcoming runs can I see?

You can set the Count option to any number; it is clamped between 1 and 50, defaulting to 5. Invalid or empty values fall back to 1.

What happens if my cron expression is invalid?

The tool reports an "Invalid cron expression." error instead of showing results, so you know to fix the syntax.

What cron syntax is supported?

Parsing is handled by the cron-parser library, which supports standard 5-field crontab expressions plus common extensions like ranges, steps, lists, and an optional seconds field.

Related tools

  • Cron Explainer
  • Crontab Cheatsheet
  • Date Difference
  • Date Info
  • Duration Formatter
  • Relative Time
  • Unix Timestamp Converter
  • Timezone Converter