How to Convert JSON, CSV, Parquet and Excel Files Online
Convert files between JSON, CSV, Parquet and Excel in seconds, right in your browser, with no install and no account.
Different tools want different formats. Spreadsheets use Excel and CSV, apps and APIs use JSON, and data teams use Parquet. Moving data between them by hand is slow and easy to get wrong.
The Format Converter handles every pair. Pick the format you have (From) and the one you need (To), drop your file, and convert. Numbers, dates and true/false values are detected for you, and nested JSON becomes clean columns.
Your file is processed on your own computer and is not sent to a server. That makes it safe to convert files with customer or business data.
How to use the Format Converter: step by step
- Open the Format Converter.
- Choose From and To: JSON, CSV, Parquet or Excel.
- Drop your file into the box, or paste the text.
- Click Convert, then copy or download the result.
When to use the Format Converter
- Sending spreadsheet data to an API (CSV or Excel to JSON)
- Saving a large CSV as a small, fast Parquet file
- Opening API data in Excel (JSON to Excel)
- Converting a whole folder of files at once with Batch / Folder
Tip: Converting many files? Use the Batch / Folder tab to convert them all and download one ZIP.