Double Line Graph Maker

Compare two data sets on one clear chart. Enter or paste your data, style both lines and download a high-quality image in seconds.

  • 100% free
  • No sign-up
  • No watermark
  • PNG · JPG · SVG · PDF

Your work is saved automatically in this browser. Nothing is uploaded.

Your data

#X label
1
2
3
4
5
6
7
8
9
10
11
12

Tip: paste cells from Excel or Google Sheets into any cell, or drop an .xlsx / .csv file on the table.

Start from an example

What is a double line graph?

A double line graph is a type of line chart that uses two separate lines to compare changes in two sets of data over the same time period or categories. It helps you see the relationship or difference between two variables in one easy-to-read graph. Each line has its own color, and a legend shows what each line represents.

How to make a double line graph

  1. Type your x-axis labels (for example months or years) in the first column of the table.
  2. Enter the values for your first data set in the first line column, and the second data set in the next.
  3. Click the line names in the table header to rename them. These names appear in the legend.
  4. Add a title and axis labels, then pick colors and line styles in the Design tab.
  5. Download your double line graph as PNG, JPG, SVG or PDF, or copy it straight into your document.

Have your data in a spreadsheet? Copy three columns (labels + two value columns) and paste them into the first cell of the table and everything fills in automatically.

Why use a double line graph?

  • Compare two trends side by side on the same scale.
  • Spot patterns, gaps or correlations between two data sets.
  • Show the difference in performance, behavior or outcomes between two groups.
  • Track two related metrics over time, such as income vs. expenses.

Examples of double line graphs

  • Revenue vs. expenses month by month
  • Test scores of two students across terms
  • Daytime vs. nighttime temperatures across a week
  • Mobile vs. desktop website visits over time
  • Heart rate and speed during a workout
  • Supply vs. demand in an economics assignment

Tips for a great double line graph

  • Use two strongly contrasting colors, such as blue and orange.
  • Make one line dashed so the graph still works in grayscale.
  • Turn on Fill area under line for one series to highlight the gap between them.
  • Keep both data sets in the same unit; if they differ a lot in size, consider a logarithmic scale.

Need just one line? Use the standard line graph maker. Comparing three data sets? Try the triple line graph maker.

Frequently asked questions

What is a double line graph?

A double line graph is a line chart with two lines plotted on the same axes. Each line represents one data set, so you can compare how both change over the same time period or categories.

How do I make a double line graph?

Enter your labels in the first column and the values for each data set in the two line columns. Rename the lines in the table header, set your title and axis labels, then download the graph as PNG, JPG, SVG or PDF.

How do I make the two lines easy to tell apart?

Use clearly different colors, and in the Design tab give one line a dashed style or a different point shape. This also keeps the graph readable when printed in black and white.

Can I turn a double line graph into a triple or multiple line graph?

Yes. Click '+ Line' in the data table to add more lines at any time, up to 12 lines on one graph.

Is the double line graph maker free?

Yes, it is completely free with no sign-up and no watermark on downloads.

More line graph makers

Line Graph MakerOne or more lines. The all-round tool.Triple Line Graph MakerTrack three trends on one chart.Multiple Line Graph MakerPlot up to 12 lines at once.