CSV Tools

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Inspect comma-separated data as a table, convert rows to JSON or SQL, and run SQL queries against CSV files. These tools keep quick data work in the browser without spreadsheet setup.

Tools in this collection

CSV Viewer

Open CSV as a filterable, sortable, paginated table.

Data Explorer

Profile column types, missing values, duplicates, and ranges.

Practical guides

Data tools

Inspect, generate, and transform local datasets.

JSON tools

Format, compare, inspect, and convert JSON documents.

SQL tools

Run queries, explore examples, and visualize schemas.

Content reviewed .

What is a CSV file?

CSV (Comma-Separated Values) is a plain-text format for tabular data. Each line is a row, and commas separate the fields in that row. A header row commonly names the columns.

Order ID,Product Name,Quantity,Price
1,Widget A,10,2.50
2,Widget B,5,3.00

CSV works well for spreadsheet exports, database imports, and simple data exchange. Quoted fields can contain commas, quotes, and line breaks.

When should you use CSV instead of JSON?

Use CSV for flat, rectangular data where every row has roughly the same columns. Use JSON when the data contains nested objects, arrays, or records with different shapes. CSV is often smaller and easier to open in a spreadsheet; JSON preserves richer structure and data types.