# Beste UI

> Beautiful, accessible blocks, pieces and components for shadcn/ui and Tailwind CSS, built for React and Next.js. Install one with the shadcn CLI and the code is yours to edit: no runtime dependency, nothing to upgrade.

Markdown rendition of https://ui.beste.co/tools/csv-to-json. Every page on the site has one: add `.md` to any address, or send `Accept: text/markdown`.

Whole catalog for LLMs: https://ui.beste.co/llms.txt. Registry index: https://ui.beste.co/r/registry.json

---
[tools](/tools)/[converters](/tools/category/converters)

# CSV to JSON

Read a CSV into JSON records, including quoted fields holding separators or line breaks, with numbers and booleans converted or kept as text.

Separator

,;Tab|

First row is a header

Read numbers and booleans

CSVcsv0

Load sampleClear

JSONjson

The result appears here

Copy outputDownload

## Questions

Does it handle commas inside a field?+

Yes, and line breaks too. Quoted fields are read by the RFC 4180 rules, where a quote inside a quoted field is written twice rather than escaped with a backslash.

What does reading numbers and booleans do?+

It turns 42 into a number, true into a boolean and an empty cell into null. Turn it off when a column holds identifiers such as postcodes or product codes, where a leading zero matters and must stay a string.

What if my file has no header row?+

Turn the header switch off and each row comes out as an array instead of an object, in file order.

Excel splits my file into one column. Why?+

Because Excel picks its separator from your system locale: comma in the UK and the US, semicolon across much of Europe. That is the same reason a file that opens fine for you arrives unreadable for a colleague. The separator switch here reads whichever one the file actually uses.

## Related tools

[JSON to CSVTurn an array of objects into a spreadsheet-ready CSV, with nested objects flattened into dotted columns and quoting handled by the rules.](/tools/json-to-csv)[JSON formatter and validatorFormat, validate, sort or minify JSON. Unquoted keys, trailing commas and comments are accepted, so a pasted console log works as well as a strict file.](/tools/json-formatter)[CSS to JS objectConvert CSS rules or a bare declaration list into JavaScript style objects, camelCased and quoted, ready for a style prop or a CSS-in-JS file.](/tools/css-to-js)

Ship it · Ship it · Ship it · Ship it · Ship it · Ship it · Ship it · Ship it · Ship it · Ship it · Ship it · Ship it · Ship it · Ship it · Ship it · Ship it · 

## The tools are free. So is most of the library.

1935 blocks and 989 pieces for shadcn/ui and Tailwind, built on the same tokens these tools write. Install one with a command and the code is yours.

[Browse the blocksBrowse the blocks](/blocks)

No signup for the tools. MIT for free blocks, commercial licence for Pro.

## Ship the interface, keep the code.

New blocks, pieces and components every week. Install one with a command and it is yours to edit. No runtime dependency, no upgrade path to fight.

[Browse the libraryBrowse the library](/blocks)[See pricingSee pricing](/pricing)

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* [GitHub](https://github.com/beste-co/beste-ui)

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