CSV to Excel
Convert a CSV file to Excel (.xlsx) in your browser. Download a real spreadsheet — nothing is uploaded.
Filter CSV with SQL
Run SQL SELECT queries on a CSV in your browser (table name data). Export matching rows locally.
Drop a CSV file here or click to choose
Queried locally — nothing is uploaded
How to use Filter CSV with SQL
Run SQL-style queries against a CSV (table name data). Export matching rows.
Everything runs locally in your browser — your files are never uploaded to a server.
Filter CSV with SQL FAQs
How do I filter a CSV with SQL?
Drop a CSV, write a SQL query against the table named data (for example SELECT * FROM data WHERE status = 'open'), then download matching rows.
Is SQL filtering for CSV free?
Yes. Every Excel and CSV tool on ReallyUseful.Tools is free to use, with no account or subscription required.
Are my files uploaded?
No. Files are processed in your browser on this device. Nothing is uploaded to our servers.
What SQL dialect is supported?
Queries run with AlaSQL in your browser. Stick to common SELECT / WHERE / ORDER BY patterns for best results.
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.