CSV to Excel
Convert a CSV file to Excel (.xlsx) in your browser. Download a real spreadsheet — nothing is uploaded.
Parquet viewer and converter
Inspect Parquet schemas, select columns, filter rows, and export CSV or JSON locally.
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How to use Parquet viewer and converter
Inspect Parquet schemas, select columns, filter rows, and export CSV or JSON locally.
Use the sample to explore the controls, or open your own files. Processing takes place on this device. Download your result before closing the tab. Supported formats and practical limits are shown in the workspace.
Parquet viewer and converter FAQs
Is Parquet viewer and converter free?
Parquet viewer and converter is a free online tool on ReallyUseful.Tools. No account is required.
Does Parquet viewer and converter run in my browser?
Parquet viewer and converter is designed to run in your browser where supported, so files can stay on your device instead of being uploaded to a server.
More Excel/CSV
Excel to CSV
Convert Excel .xlsx or .xls to CSV in your browser. Choose a sheet and delimiter, then download.
CSV viewer
Open and browse a CSV in a paginated table in your browser. No upload — view large files locally.
Merge CSV files
Combine multiple CSV files into one in your browser. Rows are stacked and headers aligned by name.
CSV to XML
Convert CSV rows into structured XML in your browser. Each row becomes an element — nothing is uploaded.