JSON ⇄ CSV Converter — Arrays to Spreadsheets

API exports to Excel-ready CSV (and back) — headers auto-detected, quoting handled, all local.

Quick answer: Free JSON→CSV: paste an array of objects, get clean CSV with auto-detected headers; swap to convert back.

Input

Output

How to use

Paste JSON array.
Convert — copy the CSV.
Swap to go CSV→JSON.

About this tool

The API-gives-JSON, Excel-wants-CSV problem, solved both ways: paste an array of objects — headers appear automatically — or paste CSV and get JSON back via swap. Proper quote-escaping included.

FAQ

Nested objects?

Flattened via dot-paths (user.name) — spreadsheet-friendly.

Excel commas inside values?

Quoted and escaped per RFC-4180.

Huge files?

Tens of thousands of rows fine — local compute.

Back to JSON?

Swap → paste CSV → convert: typed as strings.

Privacy?

Nothing leaves your device — sensitive exports safe.

Numbers in JSON output?

CSV→JSON outputs strings; numeric typing stays simple and predictable.

Related tools

{ }

JSON Formatter

Developer Tools

🔀

CSV to JSON Converter

Developer Tools

🔍

Regex Tester

Developer Tools

🔤

Base64 Encoder / Decoder

Developer Tools

🌐

URL Encoder / Decoder

Developer Tools

#️⃣

Hash Generator (SHA-256)

Developer Tools

🆔

UUID Generator

Developer Tools

⏱️

Epoch Timestamp Converter

Developer Tools

🎟️

JWT Decoder

Developer Tools

⏰

Cron Expression Generator

Developer Tools

🔢

AI Token Counter

Developer Tools

🧪

Fake Person Generator

Developer Tools

📧

Fake Email Generator

Developer Tools

✅

Credit Card Validator

Developer Tools

📱

Phone Number Validator

Developer Tools

📨

Email Validator

Developer Tools

💾

Data Storage Converter

Developer Tools

🧬

HTML Encoder / Decoder

Developer Tools

🔁

CSV to JSON Converter

Developer Tools

📐

XML Formatter / Beautifier

Developer Tools

🗄️

SQL Formatter

Developer Tools

📝

Markdown Previewer

Developer Tools

🌐

IP Subnet Calculator

Developer Tools

🕒

Unix Timestamp Converter

Developer Tools