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+# 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 [slash commands] that GitLab introduced with this new
+feature: `/spend` and `/estimate`.
+
+Slash commands 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 slash commands 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`.
+
+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_estimation`.
+
+### 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:
+* weeks (w)
+* days (d)
+* hours (h)
+* minutes (m)
+
+Default conversion rates are 1w = 5d and 1d = 8h.
+
+[landing]: https://about.gitlab.com/features/time-tracking
+[slash-commands]: ../user/project/slash_commands.md