Online chart maker
Type numbers or paste them from a spreadsheet – the preview draws a clean chart instantly. Your data stays in your browser.
How it is calculated
For a presentation, a school project or a monthly report you often need just one clear chart – without opening a spreadsheet. Type your numbers or paste them from Excel, Google Sheets or LibreOffice and save the result as an image.
How it works
- Enter data: one line per category, label and value separated by a semicolon or tab. Extra columns become extra data series (up to 8).
- Choose the chart type and optionally add a title.
- Save as PNG (double resolution for sharp slides) or SVG – SVG stays sharp at any size.
How it is drawn
The axis is divided into “round” steps (1, 2, 2.5 or 5 times a power of ten). Bar charts always start at zero because bar lengths are read as ratios; line charts may use a shortened axis. The pie chart shows each share of the first series in the total. These rules follow the UK Government Analysis Function guidance “Data visualisation: charts”. Colours are based on the Okabe–Ito palette, which stays distinguishable for people with colour vision deficiency.
Honest limits
Pie charts only suit a few categories that make up a whole – with many similar values a bar chart is easier to read. There is a maximum of 60 rows and 8 series, no second y-axis and no stacked bars.
Privacy
Your data is processed only in your browser. The browser remembers your inputs for your next visit (locally, not on a server).
Frequently asked questions
How do I make a chart from Excel data?
Select the cells in Excel (labels in the first column, values next to them), copy them and paste them into the “Data” field. Tabs are recognised as column separators.
When should I use a bar, line or pie chart?
Bars to compare categories, lines for trends over time, and pie only for shares of a whole with few categories.
Why does the bar chart axis always start at zero?
Because bar lengths are read as ratios. A cut-off axis would make differences look much bigger than they are.
Which format is better, PNG or SVG?
PNG fits anywhere. SVG is a vector graphic that stays sharp at any size – ideal for print and websites.
Sources and legal basis
- UK Government Analysis Function – Data visualisation: charts (Balkenachse ab null, Kreisdiagramm nur für Teile eines Ganzen)
- M. Okabe, K. Ito – Color Universal Design: How to make figures and presentations that are friendly to colorblind people
- W3C – SVG 2 (Pfade, Bogenbefehl A)
As of:
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