Cron Expression Builder
Build, explain, and validate cron schedules visually or with AI
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Visual Builder
Minute
Every (*)
0
5
10
15
20
25
30
35
40
45
50
55
*/5
*/10
*/15
*/30
Hour
Every (*)
0 (12 AM)
1 AM
2 AM
3 AM
4 AM
5 AM
6 AM
7 AM
8 AM
9 AM
10 AM
11 AM
12 PM
1 PM
2 PM
3 PM
4 PM
5 PM
6 PM
7 PM
8 PM
9 PM
10 PM
11 PM
*/2
*/4
*/6
*/12
Day (Month)
Every (*)
1st
2nd
3rd
4th
5th
10th
15th
20th
25th
28th
1st & 15th
*/2
Month
Every (*)
January
February
March
April
May
June
July
August
September
October
November
December
Quarterly (*/3)
Biannual (*/6)
Weekday
Every (*)
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Mon-Fri
Weekends
Presets:
Every minute
Every 5 min
Every hour
Daily midnight
Daily 9 AM
Weekdays 9 AM
Mon 9 AM
1st of month
Yearly (Jan 1)
Sun 2:30 AM
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Manual Expression
Cron Expression (5 fields)
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AI Natural Language
Describe your schedule in plain English
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Quick Reference
Field
Allowed Values
Special Characters
Minute
0-59
* , - /
Hour
0-23
* , - /
Day of Month
1-31
* , - /
Month
1-12
* , - /
Day of Week
0-7 (0,7 = Sun)
* , - /
Symbol
Meaning
Example
*
Any / Every
* in hour = every hour
,
List
1,3,5 in weekday = Mon, Wed, Fri
-
Range
1-5 in weekday = Mon through Fri
/
Step / Interval
*/15 in minute = every 15 min