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Cron Tools — Parse, Build & Preview Schedules Online

Cron syntax is easy to get wrong and expensive to debug in production. Use the parser to read existing expressions, preview upcoming executions, then switch to the visual builder when you need a new schedule for crontab, GitHub Actions, or Kubernetes.

Parse cron expressions into plain English, preview the next run times, and build Unix schedules with presets — all privately in your browser.

3 tools · 100% in-browser · All developer tools

Cron Expression Parser

Parse and visualize cron expressions in plain English. Supports Unix and Quartz syntax — instantly, in your browser.

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Cron Expression Builder

Build Unix cron schedules from fields and presets, with a plain-English preview — fully in-browser.

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Unix Timestamp Converter

Convert Unix timestamps (seconds or milliseconds) to ISO dates and back — private, instant, in-browser.

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