Turn CSV spreadsheets into clean JSON arrays and back again. Headers become keys, quoted fields are handled correctly, and you can switch the delimiter for European semicolon files. Everything is parsed in your browser.

CSV to JSON and back

Header row detection

Custom delimiters

Handles quotes and commas

Use the tool now Step by Step

Trusted & free

It is completely free, private and requires no signup.

IDs are not secrets

A UUID identifies a record — never use it as an authentication token.

Use crypto randomness

Math.random() is predictable. Use the CSPRNG for tokens, IDs and secrets.

Never trust a JWT blindly

Decoding is not verifying. Always validate the signature and claims on the server.

Keep secrets out of code

Generate keys here, then store them in environment variables or a vault.

How it works

Paste the first line as headers and the rest as rows, or load a table exported from Excel or Sheets.

Comma, semicolon or tab — the parser adapts immediately.

Each row becomes an object with your headers as keys. Copy the output or switch to JSON to CSV.

Examples & Data

Case	Result
Header + 1 row	One JSON object
Numeric values	Converted to numbers
Empty cells	Empty strings

The header row controls the key names in the resulting objects.

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Decode browser, OS and device from any UA

MIME Type Lookup

File extension to MIME type reference

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Every status code 1xx–5xx explained

URL Encoder / Decoder

Percent-encode URLs and parse query strings

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Check text contrast against WCAG AA & AAA

UUID / ULID Generator

UUID v4, v7, ULID and NanoID in bulk

JWT Decoder & Signer

Decode, inspect and sign JSON Web Tokens

Base64 Encoder / Decoder

Encode and decode Base64, standard or URL-safe

QR Code Generator

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JSON Formatter & Validator

Format, minify and validate JSON instantly

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Convert Unix timestamps to dates and back

Regex Tester

Test regular expressions with live matches

Diff Checker

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Lorem Ipsum Generator

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Number Base Converter

Convert between binary, octal, decimal and hex

Color Converter (HEX / RGB / HSL)

Convert colors and copy HEX, RGB or HSL

CSV to JSON Converter

Convert CSV to JSON and JSON back to CSV

Case Converter & Slug Generator

camelCase, snake_case, kebab-case, Title & slug

Word & Character Counter

Words, characters, sentences and reading time

Ready to try it?

It is completely free, private and requires no signup.

Use the tool now

100% Free No signup Private & secure

Help Center

Frequently Asked Questions

Values wrapped in double quotes are kept intact, so commas and line breaks inside a cell do not split the row.

Yes. Numeric-looking values become JSON numbers, true and false become booleans, and empty cells become empty strings.

No. Parsing and conversion happen with JavaScript in your browser; nothing leaves your device.

Bright Coding Network

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