Prompt
Based on the uploaded phylum_counts.csv file, create a 100% stacked bar chart of relative abundance by phylum for Healthy, IBD, Antibiotic, and Recovery groups, with percentages printed inside segments of at least 5%.
Stacked Bar Chart Maker for Research and Coursework
Show part-to-whole composition across groups with absolute or 100% stacked bars.
Upload CSV or Excel data in long or wide format, and SciFigure adds up every bar, computes each segment share, and draws a clean stacked bar chart you can use in a paper, lab report, poster, or class assignment.
Absolute or 100% stackedLong & wide dataPublication-ready PNG
AI Stacked Bar Chart Maker
Upload data and describe the stacked bars you need.
Aspect ratio
291 / 2000 characters
Costs 5 credits. Totals, segment values, and percentages are computed from your uploaded data, then drawn as a PNG.
Preview
Stacked Bar Chart Examples
Aspect ratio: 16:9
These are sample previews. Upload your dataset to generate your own stacked bar chart.
Stacked bar chart examples
Use these examples as starting points for microbiome composition, survey results, energy or budget breakdowns, and cell-type proportions.
Prompt
Based on the uploaded course_survey.xlsx file in wide format, create a horizontal 100% stacked bar chart with one bar per question and segments from Strongly Disagree to Strongly Agree, using a diverging red-to-blue palette.
Likert Survey Responses
Prompt
Based on the uploaded generation_by_year.csv file, create an absolute stacked column chart of electricity generation in TWh by source for each year, with totals printed above every column.
Electricity Generation by Source
Prompt
Based on the uploaded flow_cytometry_counts.csv file, create a 100% stacked bar chart of immune cell type proportions per donor, sorted by the T cell share, with a compact legend on the right.
Cell Type Proportions
Prompt
Based on the uploaded trial_adverse_events.csv file, create an absolute stacked bar chart of adverse event counts by CTCAE grade for the eight most common events, drawing a separate bar for the treatment arm and the placebo arm of each event. Stack grade 1 through grade 4 from light to dark in one sequential blue palette, sort the events by total count, print the total above every bar, and label the y-axis "Number of patients".
Adverse Events by Severity Grade
Prompt
Based on the uploaded land_cover_shares.xlsx file, create a faceted 100% stacked bar chart of land cover share for four watersheds, with one panel for 2000 and one for 2020 sharing the same y-axis. Keep forest, cropland, pasture, wetland, urban, and bare ground in the same order and color in every bar, print percentages inside segments of at least 8%, and place one shared legend below the panels.
Land Cover Change by Watershed
How to make a stacked bar chart
1
Upload your table
Add CSV, TSV, TXT, or Excel data. Use long format (group, segment, value) or wide format (one row per group and one numeric column per segment).
2
Map columns and describe the chart
Pick the bar group column and, for long data, the segment and value columns. Then ask for absolute or 100% stacking, horizontal bars, sorting, and labels.
3
Generate, review & download
SciFigure computes totals and shares, draws the chart with those exact numbers, and lets you download a PNG.
What does this stacked bar chart maker do?
It turns grouped numbers into a stacked bar chart, where each bar is a whole and each colored segment is one part of it. Before anything is drawn, the stacked bar chart maker adds duplicate rows together, totals each bar, and calculates the percentage each segment contributes. Those computed numbers are what the figure shows, so segment heights, percentage labels, and totals match your data. It works for research figures such as taxonomic composition or cell-type proportions, and for everyday coursework such as survey results or budget breakdowns.
Absolute vs. 100% stacked bar charts
- An absolute stacked bar graph shows real totals: bar height is the sum of all segments, so you can compare both the whole and its parts.
- A 100% stacked bar chart rescales every bar to 100%, so you compare proportions even when group sizes differ a lot.
- Absolute stacking is the default. Mention "percent", "100%", "proportion", or "relative" in your instructions to switch to 100% stacking.
- Use 100% stacking for composition questions ("what share is Firmicutes?") and absolute stacking for size questions ("which year produced the most?").
Long format vs. wide format data
- Long format has one row per bar and segment: for example Group, Phylum, ReadCount. Map the bar group, the stack segment, and the value.
- Wide format has one row per bar and one numeric column per segment: for example Question, Agree, Neutral, Disagree. Map only the bar group; every other numeric column becomes a segment.
- Repeated bar-and-segment combinations are added together. Write "mean" or "average" to average them instead.
How to read a stacked bar chart
- Compare totals using the full bar length, and compare the bottom segment directly because it shares a common baseline.
- Middle segments are harder to compare across bars because they start at different heights; percentage labels help.
- Keep the same segment order and colors in every bar so readers can follow each part.
Tips and supported instructions
- Write "horizontal" for long category names such as survey questions; this is often called a horizontal stacked bar or stacked column chart turned sideways.
- Bars keep their source order unless you write "sort", which orders them by total, or "sort by <segment>", which orders them by that segment.
- Up to 20 bars and 12 segments are drawn; the smallest segments are merged into "Other" and the chart says so.
- Negative values are excluded, because stacked bars show parts of a positive whole.
Stacked Bar Chart Maker FAQ
What data format does the stacked bar chart need?
Either long format with a bar group column, a segment column, and a numeric value column, or wide format with a bar group column and two or more numeric segment columns. The mapping panel detects which layout you uploaded.
Does the tool calculate the totals and percentages or does AI estimate them?
The tool calculates them. Rows are aggregated, bar totals and segment shares are computed from your uploaded values, and the exact numbers are passed to the image model, which only handles layout and styling.
How do I make a 100% stacked bar chart?
Include "100%", "percent", "proportion", or "relative" in your instructions. Each bar is then scaled to 100%, and the underlying totals are still reported so you can mention sample sizes.
Can I use it as a stacked bar graph maker for school assignments?
Yes. Paste a small table such as survey counts or a monthly budget, describe the colors and labels you want, and download the PNG for a lab report, presentation, or poster.
What happens when there are too many bars or segments?
The first 20 bars are shown, and when there are more than 12 segments the smallest ones by total are merged into a single "Other" segment. The chart notes what was combined or omitted.
Can I use this stacked bar chart maker for a paper?
Yes, but check that the segment order, colors, and totals are correct, state whether bars show counts or percentages, and report group sizes in the caption.
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