Chartsuno

Make a line graph online, free

A line graph is for change: revenue by month, a temperature log, signups by week. Paste the dates and the numbers. Chartsuno draws the line in the browser so you can see the trend without building it inside a spreadsheet.

How it works

1. Paste the time column and the values. Months, dates, or weeks in the first column. One or two number columns beside it.
2. Check the points in the data editor. Fix a typo or add the missing month. The line updates as you edit, so you do not rebuild the graph.
3. Set the chart to a line. Add a title that states the trend. A second series is fine when you are comparing two lines, and crowded when you add five.
4. Save, export, or share. Previewing does not require an account. Sign in free to keep the graph, download a PNG, or copy a share link. A free account includes 10 saved charts a month.

Line graph or bar chart?

Use a line when the horizontal axis is time and the point is the slope. Use bars when the categories are separate things, such as products or cities, and connecting them with a line would invent a trend that is not there.

Tips for a line that reads at a glance

• Keep the time steps even. A missing month looks like a flat stretch if you leave it out without saying so.
• Start the axis at zero unless a small change is the whole story, and then say so in the title.
• One or two lines. More than that, and the reader has to hunt for the series that matters.
• Put the conclusion in the title, for example “Signups rose every month”, not only “Signups”.

Is it free?

You can paste data and preview a chart without an account and without paying. A free account saves up to 10 charts a month, and those saved charts can be exported as a PNG or CSV and shared with a link. Paid plans remove that monthly cap. There is no credit card for the free plan.

Do I need to sign up?

Not to paste data and see the chart. Saving to My Charts, downloading a PNG or CSV, and copying a share link need a free account. On the web, Continue with Google creates the account. The iOS app also offers Sign in with Apple.

Can I plot more than one line?

Yes. Add another number column and Chartsuno draws another series. Two lines are usually enough. Name each series so the legend is readable.

Can I edit a point after the graph is made?

Yes. Change any value or label in the data editor and the line updates. Save when you want the share link and My Charts to match.

How do I share the graph?

Sign in, then download a PNG or copy a share link. Previewing the graph does not require an account. Saving and sharing need a free account.

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