The Charttoolbox collection
Seven focused tools for spreadsheet data. Choose what you want to understand, check the expected columns, and create a figure in your browser.
Date or ordered label + numeric series
Open line chart →Explore relationshipsNumeric X + numeric Y + optional group
Open scatter plot →CompositionCategory + non-negative value
Open pie / donut →CompareCategory + numeric series
Open bar chart →MatrixLabeled matrix or X/Y/Value
Open heatmap →Understand distributionsOne numeric column of raw observations
Open histogram →Compare numeric relationshipsRaw observations in 2–12 numeric columns
Open correlation matrix →Use lines for change over ordered observations, bars for category comparisons, and pie or donut charts for a small number of shares that form one whole.
A histogram groups raw measurements into intervals. A scatter plot compares two numeric variables. A correlation matrix calculates pairwise Pearson coefficients; Heatmap displays an existing matrix or X/Y/Value table.
Each tool accepts CSV, TSV, XLS/XLSX, and pasted cells. The first row should name your columns. Every tool includes fictional sample data so you can see the expected shape before importing.
Spreadsheet contents remain on your device. Charts can be exported as PNG or SVG. Optional analytics requires consent and does not receive your table data.