Spincrus

Tools › Cron Expression Explainer

Cron Expression Explainer

Paste any cron expression and get a plain-English explanation instantly. Supports ranges, steps, lists and @daily/@hourly aliases.

Runs in your browser. Nothing is uploaded.

Use it from code

The same function is available as an API endpoint. Free tier: 100 calls per day without a key. Pro lifts the limit.

curl -X POST https://spincrus.uz/api/v1/tools/cron-expression-explainer \
  -H "content-type: application/json" \
  -H "x-api-key: YOUR_KEY" \
  -d '{"expression":"0 9 * * 1-5"}'

FAQ

What are the five cron fields?

Minute (0-59), hour (0-23), day of month (1-31), month (1-12) and day of week (0-7, where both 0 and 7 mean Sunday).

What does */15 mean?

A step value: "every 15th unit" starting at the field minimum, so */15 in the minute field runs at :00, :15, :30 and :45.

Does this support @daily and @hourly?

Yes. The standard aliases @yearly, @monthly, @weekly, @daily, @midnight and @hourly are expanded before parsing.

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