What is a stacked bar chart?
A stacked bar chart divides each bar into multiple series stacked vertically. Because it shows both the total and the breakdown at the same time, it's a workhorse of business reports.
A regular bar chart places series side by side for comparison. A stacked chart stacks them vertically so you can read both the totals and how the totals are composed.
When to use it
Tips for making one well
1. Choose the stack order deliberately
Stack with a consistent rule — by importance, by size, or by chronology. Place the series you most want readers to compare at the bottom.
2. Aim for three to five series
Beyond six series, it gets hard to tell which color is which. Group small categories into "Other."
3. Encode meaning in your colors
Tying colors to category meaning (e.g., "Revenue = blue tones, Cost = red tones") makes the chart intuitive to read.
4. For totals only, use a regular bar chart
If the breakdown isn't important and you only want to compare totals, a regular bar chart can read more clearly.