Data Tools

Spreadsheet data and structured data rarely stay in one format for their whole life. A list exported from Excel or Google Sheets as CSV often needs to become JSON before it can be used in an API request, a script, or a database import. Konvity’s data conversion tools handle that specific, extremely common step, entirely in your browser, without needing to write a parser or open a code editor for a one-off task.

The tool in this category is the CSV to JSON Converter, and it turns spreadsheet data into clean, structured JSON. Paste CSV text directly, or upload a file, and choose comma, tab, semicolon, or a custom delimiter to match your data. Turn the first row into object keys with the header row option, or export each row as a plain array of values without it. A pretty-print toggle controls whether the output JSON is compact or nicely indented for readability.

This covers a wide range of situations where you need to convert CSV to JSON online. Developers use it to turn a spreadsheet export into an API-ready payload without writing custom parsing code. People importing data into a database, a no-code tool, or an app use it because many of those systems accept JSON more easily than raw CSV. Anyone testing or debugging a data pipeline can paste in a sample of their CSV data to instantly see what the resulting JSON structure will look like, before writing a single line of code to handle it.

Delimiter handling matters more than people expect. Not every CSV-like export actually uses commas: some regions and tools default to semicolons, and tab-separated values are common in exports from certain databases and spreadsheet tools. Being able to pick comma, tab, semicolon, or a fully custom delimiter means the converter handles files that a strict, comma-only parser would get wrong or refuse to process at all.

Quoted fields are handled correctly too: a value that contains the delimiter character itself, or an escaped quote character written as a doubled quotation mark, parses the way a proper CSV parser should, rather than splitting a single field into several by mistake. If your CSV file has no header row at all, turning off the header option gives you back each row as a plain array instead of forcing field names onto data that never had any.

As a free data converter online, this tool works the same way whether you need to convert a spreadsheet once or use it every day: paste or upload, pick a delimiter, and copy or download the result. It also doubles as a simple JSON formatter, since the pretty-print option lays out nested structures with proper indentation instead of one long, unreadable line of text. Everything runs on your own device, using your browser’s JavaScript engine, so your data is never uploaded to a server.

More online data tools, covering additional formats beyond CSV and JSON, are planned for this category over time. For now, if your task is turning spreadsheet data into structured JSON, or the other way around in spirit, cleaning up messy delimiter-separated data into something a program can actually use, this converter is free, requires no account, and handles the conversion entirely in your browser.