CronKit

Cron expression explainer & next-run calculator

Paste a cron expression to get a plain-English explanation and the exact next run times in any timezone. Build a schedule field by field — no guessing what 0 9 * * 1-5 means.

0 9 * * 1-5
Get this as JSON (developer API)
curl "https://cron.wrapper-agency.com/api/v1/cron?expr=0%209%20*%20*%201-5&tz=UTC"

Free cron API — no key during beta. Parsing is standard 5-field (or 6-field with seconds) cron, computed with cron-parser.

Common cron expressions

interval

* * * * *
Every minute
*/5 * * * *
Every 5 minutes
*/10 * * * *
Every 10 minutes
*/15 * * * *
Every 15 minutes
*/30 * * * *
Every 30 minutes
0 * * * *
Every hour
0 */2 * * *
Every 2 hours
0 */6 * * *
Every 6 hours
0 */12 * * *
Every 12 hours

daily

0 0 * * *
Every day at midnight
0 9 * * *
Every day at 9 AM
0 12 * * *
Every day at noon
30 18 * * *
Every day at 6:30 PM

weekly

0 9 * * 1-5
Weekdays at 9 AM
0 0 * * 0
Every Sunday at midnight
0 0 * * 1
Every Monday at midnight
0 17 * * 5
Every Friday at 5 PM
0 0 * * 6,0
Every weekend at midnight

monthly

0 0 1 * *
First of the month at midnight
0 0 15 * *
15th of the month at midnight
0 0 L * *
Last day of the month

yearly

0 0 1 1 *
Every January 1st

advanced

0 0 1 */3 *
Quarterly (1st, every 3 months)
0 8 1-7 * 1
Day 1–7 and on Monday at 8 AM

“Every X” quick answers

Run every minute
* * * * *
Run every 5 minutes
*/5 * * * *
Run every 10 minutes
*/10 * * * *
Run every 15 minutes
*/15 * * * *
Run every 30 minutes
*/30 * * * *
Run every hour
0 * * * *
Run every 2 hours
0 */2 * * *
Run every 6 hours
0 */6 * * *
Run every 12 hours
0 */12 * * *
Run every day (at midnight)
0 0 * * *
Run every weekday
0 0 * * 1-5
Run every weekend
0 0 * * 6,0
Run every week (Sunday)
0 0 * * 0
Run every month (1st)
0 0 1 * *
Run every year
0 0 1 1 *

For developers

Validate and explain cron in code with the cron API, or read the cron expression guide. Batch validation is available as a paid endpoint for agents and CI.