Cron Expression Generator
Compose cron schedules and understand existing ones in plain words.
Runs 100% in your browser — nothing is ever uploaded.
What is Cron?
Build cron schedules visually and get a plain-English explanation of any cron expression. Free, instant, client-side. Pick your options and the result is generated instantly — ready to copy straight into your project. Free and unlimited, with no watermarks and no registration — all processing happens right in your browser, so nothing is ever sent to a server.
How to use Cron
- Open Cron in your browser — it's free and needs no account.
- Configure the options to match exactly what you need.
- Click the generate button — the result appears instantly.
- Copy the output or download it as a file for your project.
Frequently asked questions
Is Cron really free?
Yes — Cron is 100% free with no limits, no watermarks and no registration. You can use it as often as you like, on as many files or inputs as you need.
Is my data safe when I use Cron?
Absolutely. Cron runs entirely in your browser using JavaScript — your input is processed on your own device and is never uploaded to any server.
Does Cron work on mobile devices?
Yes. Cron works in any modern browser on desktop, tablet and mobile (Chrome, Firefox, Safari, Edge) — there is no app to install.
Do these tools touch my servers?
No. OpsForge tools are pure calculators and generators that run in your browser — they never connect to your infrastructure. You copy the result and apply it yourself.
Is the chmod calculator accurate for all systems?
Yes — octal permission notation is a POSIX standard, so the results apply identically on Linux, macOS and BSD.
Will more DevOps tools be added?
Yes — Dockerfile, docker-compose, nginx and CI config generators are on the roadmap. Everything will stay free and client-side.