# Time Tracking > Introduced in GitLab 8.14. Time Tracking allows you to track estimates and time spent on issues and merge requests within GitLab. ## Overview Time Tracking lets you: - Record the time spent working on an issue or a merge request. - Add an estimate of the amount of time needed to complete an issue or a merge request. You don't have to indicate an estimate to enter the time spent, and vice versa. Data about time tracking is shown on the issue/merge request sidebar, as shown below. ![Time tracking in the sidebar](time-tracking/time-tracking-sidebar.png) ## How to enter data Time Tracking uses two [quick actions] that GitLab introduced with this new feature: `/spend` and `/estimate`. Quick actions can be used in the body of an issue or a merge request, but also in a comment in both an issue or a merge request. Below is an example of how you can use those new quick actions inside a comment. ![Time tracking example in a comment](time-tracking/time-tracking-example.png) Adding time entries (time spent or estimates) is limited to project members. ### Estimates To enter an estimate, write `/estimate`, followed by the time. For example, if you need to enter an estimate of 3 days, 5 hours and 10 minutes, you would write `/estimate 3d 5h 10m`. Time units that we support are listed at the bottom of this help page. Every time you enter a new time estimate, any previous time estimates will be overridden by this new value. There should only be one valid estimate in an issue or a merge request. To remove an estimation entirely, use `/remove_estimate`. ### Time spent To enter a time spent, use `/spend 3d 5h 10m`. Every new time spent entry will be added to the current total time spent for the issue or the merge request. You can remove time by entering a negative amount: `/spend -3d` will remove 3 days from the total time spent. You can't go below 0 minutes of time spent, so GitLab will automatically reset the time spent if you remove a larger amount of time compared to the time that was entered already. To remove all the time spent at once, use `/remove_time_spent`. ## Configuration The following time units are available: - months (mo) - weeks (w) - days (d) - hours (h) - minutes (m) Default conversion rates are 1mo = 4w, 1w = 5d and 1d = 8h. ### Limit displayed units to hours > Introduced in GitLab 12.1. The display of time units can be limited to hours through the option in **Admin Area > Settings > Preferences** under 'Localization'. With this option enabled, `75h` is displayed instead of `1w 4d 3h`. ## Other interesting links - [Time Tracking landing page on about.gitlab.com](https://about.gitlab.com/solutions/time-tracking/) [quick actions]: ../user/project/quick_actions.md