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Convert Azure Functions cron to Quartz
Azure Functions expressions look similar to Quartz, but the differences matter. Paste yours below; the result is checked against the original run times.
What changes from Azure Functions to Quartz
- Azure Functions numbers Sunday as 0, but Quartz uses 1-7 starting on Sunday. Every weekday number is increased by one (Monday-Friday becomes 2-6).
- Quartz requires a
?in exactly one of the two day fields. The converter puts it in the day field you did not use. - Quartz has a year field. The converter appends
*so the schedule repeats every year.
Worked examples
| Schedule | Azure Functions | Quartz |
|---|---|---|
| every minute | 0 * * * * * | 0 * * * * ? |
| every 5 minutes | 0 */5 * * * * | 0 */5 * * * ? |
| every 10 minutes | 0 */10 * * * * | 0 */10 * * * ? |
| every 15 minutes | 0 */15 * * * * | 0 */15 * * * ? |
| every 30 minutes | 0 */30 * * * * | 0 */30 * * * ? |
| every hour | 0 0 * * * * | 0 0 * * * ? |
| every 2 hours | 0 0 */2 * * * | 0 0 */2 * * ? |
| every 3 hours | 0 0 */3 * * * | 0 0 */3 * * ? |
Field layout and time zones
second (0-59), minute (0-59), hour (0-23), day-of-month (1-31), month (1-12), day-of-week (0-6, 0 = Sunday).
Azure Functions evaluates NCRONTAB in UTC unless the WEBSITE_TIME_ZONE app setting is set; with it, the schedule adjusts for daylight saving. The setting is not supported on Linux Consumption or Flex Consumption plans.
second (0-59), minute (0-59), hour (0-23), day-of-month (1-31), month (1-12), day-of-week (1-7, 1 = Sunday), year (1970-2199, optional).
Quartz uses the JVM default time zone unless you set one: CronScheduleBuilder.cronSchedule(expr).inTimeZone(TimeZone.getTimeZone("UTC")).
Go the other way
Convert Quartz to Azure Functions, or open the Azure Functions builder or the Quartz builder.
Frequently asked questions
How do I convert a Azure Functions cron expression to Quartz?
Paste it into the converter above with Azure Functions as the source and Quartz as the target. For example, 0 * * * * * becomes 0 * * * * ?.
Is every Azure Functions expression convertible to Quartz?
Yes for the common schedules we tested (29 of 29), though unusual expressions with special characters might need manual review.
Does Quartz run in the same time zone as Azure Functions?
Not necessarily. Conversion changes the syntax, not the time zone. Check where each system evaluates the schedule before you rely on the same clock times.