Dimension
01 Definition
Dimension meaning: A dimension is a descriptive attribute that groups or labels the data behind a metric.
A dimension is a non-numeric attribute used to slice analytics data, such as country, device, page path, or traffic source. Dimensions answer who, what, or where, while metrics answer how many. Pairing a metric with a dimension shows how a total breaks down across categories.
Why it matters
How Dimension fits the work
Dimensions let you break a single number into meaningful segments, so you can see which pages, channels, or audiences drive results instead of one flat total.
In context
Grouping 12,400 sessions by the device dimension shows 8,000 mobile, 3,600 desktop, and 800 tablet, which sums back to the original total.
Practical note
Adding many dimensions to a report can split data into small samples and, in some tools, trigger sampling or thresholding that hides low-volume rows.