ConvertCSV keeps the workflow simple: bring a file or structured text, review the parsed output, then download a spreadsheet-ready result. No account is required for everyday conversions.

Upload or paste data

Start with CSV, XLSX, JSON, XML, YAML, SQL, HTML, KML, or GeoJSON depending on the tool.

Preview before export

Review parsed rows in a clean interface so formatting issues are easier to catch.

Download the result

Export spreadsheet-ready CSV or Excel files without installing desktop software.

Supported File and Data Formats

Work with spreadsheet files, structured text, markup, and geospatial data in one place.

CSVXLSXJSONXMLYAMLSQLHTMLKMLGeoJSONPDFWordMarkdownQR Codes

Learn About Data Formats

Read in-depth guides on CSV, JSON, XML, finance file formats, and spreadsheet best practices — written for real workflows.

Read Format Guides About Convert CSV

Convert CSV

Convert CSV is a free browser-based workspace for turning structured data into spreadsheet-ready files. Whether you receive JSON from an API, XML from a legacy system, or a messy HTML table from a web page, you can paste or upload the source, preview the parsed rows, and download clean CSV or Excel output — all without installing software or creating an account.

About the CSV, JSON, XML, SQL, KML, HTML, Excel and spreadsheet data to CSV and Excel format

The platform supports more than a dozen input formats including CSV, XLSX, JSON, XML, YAML, SQL INSERT statements, HTML tables, KML, GeoJSON, fixed-width text, and common finance file types like OFX and QFX. Each converter is a focused page built around one transformation, so you always know exactly what input is expected and what output you will get.

Common use cases

A developer needs to flatten a JSON API response into columns before sharing it with a non-technical teammate.
A student receives survey data as an XML export and needs to open it in Excel for analysis.
An operations team copies an HTML pricing table from a vendor page and wants it as a CSV for comparison.
A bookkeeper receives bank transactions in OFX format and needs a CSV for reconciliation in a spreadsheet.

How to use this tool

Upload your CSV, JSON, XML, SQL, KML, HTML, Excel and spreadsheet data file or paste the source content into the text box on this page.
Click the convert button and wait for the browser to parse the input into consistent columns.
Inspect the output preview — check row counts, column headers, and sample values before downloading.
Download the result as CSV and Excel and continue with your spreadsheet, database, or reporting workflow.

Tips for best results

Start with the Online CSV Editor if you need to clean data before converting it to another format.
Use the tools directory search to find converters by keyword when you are unsure which page to open.
Always preview parsed rows before downloading — a quick check catches delimiter and encoding issues early.
Keep original source files as backups before running any conversion or edit workflow.

Common pitfalls

Very large files (over 5 MB) may slow down or crash the browser because all processing happens client-side. If a conversion looks wrong, check whether the source uses an unusual delimiter, nested structure, or non-UTF-8 encoding before assuming the tool failed.

For more background on data formats and conversion workflows, read our format guides or browse the converter blog for step-by-step walkthroughs linked to each tool.