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CSV Converter

Convert CSV data into Excel spreadsheets, JSON objects, SQL queries, and TSV files.

CSV/JSON/Excel Converter

Select File to Convert

Supports CSV, Excel, JSON

Convert CSV Online Free — CSV to Excel (XLSX), JSON & SQL Converter

The CSV Converter transforms flat comma-separated values into structured JSON objects, Microsoft Excel spreadsheets (XLSX), TSV files, HTML tables, and SQL INSERT statements. Parse delimiters automatically, preview your data in an interactive table, and export formatted datasets in 1 click.

Supported Data Formats

CSV to JSON

Converts table rows into an array of structured JSON objects for REST APIs and web applications.

CSV to Excel (XLSX)

Generates clean Microsoft Excel workbooks with native column headers and numeric cell formatting.

CSV to SQL Queries

Creates formatted SQL INSERT statements ready to populate MySQL, PostgreSQL, or SQLite database tables.

JSON to CSV

Flattens nested API JSON payloads into tabular spreadsheet columns for business reporting.

How to Convert CSV Files Online

1
Upload or Paste CSV
Drag and drop your .csv or .tsv file, or paste raw tabular text directly.
2
Select Delimiter & Parse
Auto-detect commas, semicolons, or tabs, and preview the parsed table.
3
Choose Output Format
Select Excel (.xlsx), JSON array, SQL insert query, or formatted HTML.
4
Download Converted File
Click download or copy the formatted dataset directly to your clipboard.

Frequently Asked Questions

Does this tool support custom delimiters (semicolon, tab, pipe)?

Yes. The converter auto-detects commas, semicolons, tabs (TSV), and pipe (|) delimiters, and lets you override delimiter rules manually.

Is my confidential financial or customer data uploaded to a server?

No. All file parsing, table rendering, and data conversion happen strictly within your local browser memory.

Can I preview data before downloading?

Yes. An interactive data table preview with search filtering and column sorting displays your parsed records in real time.

Can I convert large CSV files with tens of thousands of rows?

Yes! Because processing executes directly in your local browser memory via WebAssembly and JavaScript streams, datasets with tens of thousands of rows process instantly without server timeout limits.