How to calculate days between createdDate and resolutionDate

[welyson lemuel]

I need to know how many days a task took to get ready

[Milan Chheda [INFOSYSTA] · Accepted solution]

You can use ScriptRunner add-on to write a simple script and show the number of days in a custom scripted field.

Here you can find an example script too: https://community.atlassian.com/t5/Jira-questions/ScriptRunner-find-number-of-days-between-two-custom-date-fields/qaq-p/596551