Bar Graph Maker
Paste a table, get a grouped bar graph with error bars.
Paste a table with labels in the first column and one column per series. Repeat a column header, such as Control, Control, Control, to mark replicates and the tool plots the mean with SD or SEM error bars and the individual points. Download the graph as SVG or a 2x PNG.
Free, runs in your browser. Nothing you enter is uploaded.
What you get
- Grouped or single bar graph
- Mean with SD or SEM error bars
- Individual replicate points
- Mean, SD and SEM table to copy
- SVG and PNG download
Questions
How do I make a bar graph with error bars?
Paste your data with each replicate in its own column and give replicates the same header, for example Control, Control, Control. Turn on Replicates, pick SD or SEM, and each bar shows the mean with its error bar.
Should I use SD or SEM error bars?
Use SD to show how spread out the individual measurements are. Use SEM to show how precisely the mean is estimated. SEM is SD divided by the square root of n, so it is always smaller. Say which one you used in the figure legend.
How do I make a grouped bar chart?
Put categories in the first column and each group in its own column, for example Gene, Control, Treated. Each row becomes a cluster of bars with one bar per group, and a legend is added automatically.
Can I paste data straight from Excel?
Yes. Copy the cells in Excel or Google Sheets and paste. Tab, comma and semicolon separated data all work, and empty cells are ignored.
How do I download the graph for a paper or slide?
Click SVG for a vector file you can edit in Illustrator or Inkscape, or PNG for a 2x resolution image. Both export on a white background.
More Data Visualization
All free tools · By Dr. Zubair Khalid, DVM, MS, PhD.