Charts & Diagrams
Turn a column of numbers into a bar graph, histogram or scatter plot, or an outline into a flowchart, mind map or timeline, and download it as an image for a paper, slide or poster. Paste your data, adjust the labels, export. Free, no sign-up.
Charts & Diagrams
33 tools · free, no sign-up
Bar Graph Maker
Make a bar graph from labeled data — vertical or horizontal, one series or several, grouped or stacked — and download it as SVG or PNG, with an APA-style option.
Line Graph Maker
Plot one or more series as a line graph over categories or numeric x values — straight segments, optional markers, gaps for missing values — and download SVG or PNG.
Pie Chart Maker
Make a pie or donut chart with percentage or value labels, combine small slices into “Other”, and get a warning when your numbers are not parts of one whole.
Scatter Plot Maker
Plot x, y pairs as a scatter plot, color points by group, add a least-squares trend line with its equation and r², and set axis ranges that need not start at zero.
Histogram Maker
Turn raw numbers into a histogram with bins from Sturges, Scott or Freedman–Diaconis, or your own width — with the bin edges, the frequency table and the working shown.
Box Plot Maker
Draw box-and-whisker plots for one or more groups with Tukey whiskers and outliers, a choice of quartile method, and the five-number summary of every group.
Stem-and-Leaf Plot Generator
Build a stem-and-leaf plot with a key — split stems, back to back for two data sets, decimals and negative numbers — as copyable text and a downloadable image.
Dot Plot Maker
Make a dot plot or line plot for a small data set — whole numbers, decimals or fractions — with stacked dots or X marks, optional bins, and the count at every value.
Venn Diagram Maker
Make a two- or three-circle Venn diagram from region items, set members or counts — every label inside its region, an optional universal set, and the set arithmetic shown.
Word Cloud Generator
Turn text into a word cloud: stopwords removed from an editable list, linear or square-root sizing, a reproducible layout, and every word's count as a CSV table.
Timeline Maker
Build a horizontal or vertical timeline from dated events — years, months or full dates, BCE included — spaced to scale or evenly, with periods drawn as bands.
Mind Map Maker
Type an indented outline and get a mind map — branches on both sides, a left-to-right tree or rings around the center — with no ideas overlapping and a color per branch.
Gantt Chart Maker
Plan a project as a Gantt chart: tasks with dates or durations, phases, milestones, dependency arrows and progress, by day, week or month — with CSV import and export.
Phylogenetic Tree Maker
Draw a phylogenetic tree from Newick text as a rectangular phylogram or cladogram, with branch lengths, support values and aligned tip labels, and download it as SVG or PNG.
Pedigree Chart Maker
Draw a genetics pedigree from a text outline with standard NSGC symbols for affected, carrier and deceased individuals, numbered generations and a key. Download SVG or PNG.
Climate Graph Maker
Make a climate graph from monthly temperature and precipitation: a temperature line on the left axis, precipitation bars on the right, in °C or °F and mm or inches, as SVG or PNG.
Population Pyramid Maker
Draw an age-sex population pyramid from counts or percentages with five-year cohorts, compare two populations as an outline, and get dependency ratios and median age.
Graphing Calculator
Plot up to six functions y = f(x) with zoom and pan, zeros, intersections and turning points marked, a table of values, and PNG or SVG download.
Probability Tree Diagram Maker
Multi-stage probability trees from typed branches, repeated stages or bag draws, with exact branch and outcome probabilities, an event sum and SVG or PNG export.
Risk of Bias Plot Generator
Paste RoB 2 or ROBINS-I judgements and draw a robvis-style traffic-light plot or a weighted or unweighted summary bar plot, then download it as SVG or PNG.
Color Blindness Simulator
Upload a figure or slide and preview protanopia, deuteranopia, tritanopia and achromatopsia side by side, using the Machado et al. (2009) model, in your browser.
Radar Chart Maker
Make a radar (spider) chart from pasted data — one or several series on shared or per-axis scales, with value labels, APA figure style and SVG or PNG download.
Heatmap Maker
Turn a table of numbers into a color heatmap with colorblind-safe sequential or diverging palettes, value labels in each cell, and SVG or PNG download.
Pareto Chart Maker
Make a Pareto chart from categories and counts — sorted bars, a cumulative percent line on a right axis, an 80% reference line and an Other group.
Flowchart Maker
Type steps and arrows as plain text and get a flowchart with ISO 5807 symbols, labelled Yes/No branches and loops, laid out automatically. Download SVG or PNG.
Concept Map Maker
Type concepts and linking phrases as A -causes-> B and get a concept map with cross-links marked and an automatic layout. Download SVG or PNG.
Fishbone Diagram Maker
Type an effect, its categories and causes as an indented outline and get an Ishikawa fishbone diagram that never overlaps. 6 Ms, 8 Ps and 4 Ss suggestions. SVG or PNG.
Org Chart Maker
Type an indented list of names and titles and get an organizational chart with a clean top-down layout, a hanging-column option for big teams, and SVG or PNG download.
Argument Map Maker
Type a claim with its reasons, objections and rebuttals as an indented outline and get a box-and-arrow argument map with numbered boxes. Download SVG or PNG.
Sankey Diagram Maker
Type flows as Source -> Target: value and get a Sankey diagram with ribbons exactly proportional to the amounts, ordered columns and no overlaps. SVG or PNG download.
Ogive Maker
Draw an ogive (cumulative frequency graph) from raw data or a class table, with Q1, the median and Q3 read off the curve and the working shown. SVG or PNG download.
Error Bar Chart Maker
Plot group means with SD, SE or confidence interval error bars as columns or dots, from summary statistics or raw values, with an APA figure note. SVG or PNG.
Forest Plot Maker
Draw a forest plot straight from study estimates and confidence intervals, with a log scale for ratios, square size by weight and an optional summary diamond. SVG or PNG.
Choosing the Right Chart
| Your data | Best chart | Avoid |
|---|---|---|
| Amounts for a few categories | Bar graph | A pie chart with many small slices |
| Parts of one whole, few categories | Pie chart | A pie whose slices do not add up to a total |
| A measurement over time | Line graph | Bars for a long, continuous series |
| How one numeric variable is spread | Histogram, box plot or ogive | A bar graph of raw values |
| Two numeric variables | Scatter plot | A line graph joining unordered points |
| Group means with uncertainty | Error bar chart | Unlabelled bars — say whether they show SD, SE or a confidence interval |
| A table of values to scan for patterns | Heatmap | A rainbow palette that colour-blind readers cannot separate |
| Which causes matter most | Pareto chart | Unsorted categories |
| Flows between stages | Sankey diagram | More than a dozen nodes |
| Several measures per item | Radar chart | Comparing exact values |
Distributions also have two classroom formats, the Dot Plot Maker and Stem-and-Leaf Plot Generator. For functions rather than data, the Graphing Calculator plots up to six at once and finds zeros and intersections.
Diagrams for Ideas, Processes and Plans
- Brainstorming and learning. The Mind Map Maker turns an indented outline into a map, the Concept Map Maker adds labelled links between ideas, and the Word Cloud Generator shows which words dominate a text.
- Arguments and logic. The Argument Map Maker lays a claim with its reasons, objections and rebuttals into numbered boxes; the Venn Diagram Maker shows overlapping sets and the Probability Tree Diagram Maker multi-stage outcomes with exact probabilities.
- Processes and organizations. The Flowchart Maker, Fishbone Diagram Maker for cause analysis and Org Chart Maker.
- Time and projects. The Timeline Maker for dated events, BCE included, and the Gantt Chart Maker for a project schedule.
Figures for Science and Evidence Reviews
Some figures belong to one field and have conventions of their own. Biology: the Phylogenetic Tree Maker draws a Newick tree as a phylogram or cladogram, and the Pedigree Chart Maker uses standard genetics symbols. Geography: the Climate Graph Maker combines monthly temperature and rainfall, and the Population Pyramid Maker compares age structures. Evidence reviews: the Forest Plot Maker plots study estimates with confidence intervals and a summary diamond, and the Risk of Bias Plot Generator draws traffic-light plots from RoB 2 or ROBINS-I judgements.
Download SVG for print and documents — it stays sharp at any size — and PNG for slides, websites and anywhere SVG is not accepted. Label both axes with units, start a bar graph's value axis at zero, and use colours that stay distinct for colour-blind readers: the Color Blindness Simulator previews a figure as protanopia, deuteranopia, tritanopia and achromatopsia would show it. An APA figure also needs a number and a title above the image and any notes below it.
The chart makers draw in your browser, so the data you paste is not uploaded. For the statistics behind a chart — means, quartiles, a regression line's significance — see Statistics Calculators; the guide on how to present data covers when a table beats a figure.
Frequently Asked Questions
- What is the difference between a bar graph and a histogram?
- A bar graph compares separate categories, so its bars have gaps and can be reordered. A histogram shows how one numeric variable is distributed across adjoining ranges (bins), so its bars touch and their order is fixed by the number line.
- How many bins should a histogram have?
- There is no single right number. The Histogram Maker offers Sturges', Scott's and the Freedman–Diaconis rules, which suit different sample sizes and shapes, or your own bin width. Try two and keep the one that shows the shape of the data without hiding it.
- When should I use a pie chart instead of a bar graph?
- Use a pie chart only when the slices are parts of one whole, there are about five or fewer of them, and the reader needs the share more than the exact value. Otherwise a bar graph is easier to read, because lengths along a common baseline are easier to compare than angles.
- How do I put a chart into a Word document or Google Doc?
- Download the chart as PNG and insert it as an image, or as SVG in recent versions of Word, which keeps it sharp when resized. Add the figure number and title in your document, above the image, as APA style asks.
- What is a Pareto chart used for?
- It ranks causes or categories by count in descending bars and adds a cumulative-percentage line, so you can see the few items that account for most of the total. Quality-improvement courses use it to decide what to fix first. The Pareto Chart Maker draws the 80% reference line.
- Is my data uploaded anywhere?
- No. The chart makers run in your browser, and the image is created on your device when you download it.