Free Online Tools

Data conversion, visualization, and calculation tools — all free, no signup required.

Data Converters

CSV to JSON Converter

Free online CSV to JSON converter. Paste your CSV data or upload a file, and get clean JSON output in seconds. Supports custom delimiters, nested objects, and bulk conversion.

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JSON to CSV Converter

Free online JSON to CSV converter. Paste JSON data or upload a file, and get clean CSV output in seconds. Supports arrays of objects, arrays of arrays, and custom delimiters.

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Chart Makers

Bar Chart Maker

Free online bar chart maker. Paste CSV data, tweak chart settings, and export PNG or SVG instantly.

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Pie Chart Maker

Paste category/value data, tune legend and labels, and export crisp PNG or SVG without leaving your browser.

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Sponsored

Need to visualize your data?

Convert your data, then create beautiful charts with our free Line Graph Maker.

Create a Chart