Jira - Estimations sum for columns in boards is a free Chrome extension developed by Per Lundström. This extension is designed to help users sum up the estimates for each column in both Scrum and Kanban boards.

To use this extension, the user needs to have the "Global time tracking settings/Time display format" set to either "days" or "hours". Additionally, the project must be "company-managed" for the extension to work properly.

For Scrum boards, the extension requires that only one estimation field is shown. This can be either the estimation field from "Board settings/Estimation" or "Board settings/Card layout".

For Kanban boards, the extension requires that only one estimation field is shown. This field can be found under "Board Settings/Card layout".

With Jira - Estimations sum for columns in boards, users can easily calculate the total estimates for each column in their Scrum and Kanban boards, providing valuable insights into project progress and resource allocation.