JIRA Estimate is a Chrome extension that simplifies the process of calculating total estimates in JIRA descriptions. This tool efficiently sums up all '##h##m', '##.##h', '##h', and '##m' estimates within the description, making it easier to manage project timelines. Developed for the JIRA issue tracker by Atlassian, this macro streamlines the total estimate entry process by automatically calculating the cumulative time spent on ad-hoc subtasks listed within the description.

Users can simply input estimates like '4h' for 4 hours, '4h30m' for 4 hours 30 minutes, or '4.5h' for 4 hours 30 minutes, and JIRA Estimate will provide the total in hours and minutes, ready to be entered into the estimate field of the issue. This extension is a valuable tool for enhancing efficiency and accuracy in project planning within JIRA.