When to use this tool
- Create a schedule for a new automation.
- Avoid field-order mistakes.
- Start from a preset and fine-tune the expression.
Cron builder
Build a cron schedule
Choose a preset, edit the expression, and copy a validated cron string with the next runs shown immediately.
Meaning
At 09:00, Monday through Friday
Run 1 · Asia/Shanghai
Jun 29, 2026, 09:00:00 GMT+8
2026-06-29T01:00:00.000Z
Run 2 · Asia/Shanghai
Jun 30, 2026, 09:00:00 GMT+8
2026-06-30T01:00:00.000Z
Run 3 · Asia/Shanghai
Jul 01, 2026, 09:00:00 GMT+8
2026-07-01T01:00:00.000Z
Run 4 · Asia/Shanghai
Jul 02, 2026, 09:00:00 GMT+8
2026-07-02T01:00:00.000Z
Run 5 · Asia/Shanghai
Jul 03, 2026, 09:00:00 GMT+8
2026-07-03T01:00:00.000Z
Cron Builder: definition and examples
A cron builder turns common schedule ideas into exact cron syntax.
How to use it
- Choose a preset.
- Edit the generated expression if needed.
- Verify the next runs before copying it.
Example
Choose Every weekday to generate 0 9 * * 1-5 for 9:00 AM Monday through Friday.
Frequently asked questions
Can I edit the generated cron expression?
Yes. Presets populate the expression field, and the field remains editable.
Does the builder support seconds?
TimeKit focuses on standard five-field cron syntax for broad compatibility.