Free Online Code & Data Converters
Convert between data formats instantly: JSON to YAML, XML to JSON, TypeScript to JavaScript, and 100+ more converters. Free, no signup.
120 tools available
Unixタイムスタンプ変換
Unixタイムスタンプと日付を相互変換
色変換
HEX、RGB、HSL形式間で色を変換、プレビュー付き
進数変換
2進、8進、10進、16進数を相互変換
JSON ↔ YAML変換
JSONとYAML形式を即座に変換
CSV ↔ JSON変換
CSVとJSON形式を即座に変換
IPサブネット計算
サブネットマスク、ネットワーク、ブロードキャストを計算
テキスト ↔ バイナリ変換
テキストをバイナリに、バイナリをテキストに変換
HTMLテーブル生成
CSVまたはJSONをHTMLテーブルに変換
JSON → TypeScript
JSONデータをTypeScriptインターフェースと型に変換
HTML → JSX
HTMLマークアップをReact JSXコンポーネントに変換
JSON から Go へ
JSONをGo構造定義にオンラインで変換
JSON to Go Struct コンバーター
カスタマイズ可能なオプション付きで JSON から Go Struct 定義を生成します
SVG → JSX/React
SVGマークアップをJSX Reactコンポーネントに変換
TypeScript → JavaScript
TypeScriptコードをプレーンJavaScriptにコンパイル
JSON to GraphQL
Convert JSON data to GraphQL schema definitions
JSON to Java Class
Convert JSON data to Java class definitions
JSON to Kotlin
Convert JSON data to Kotlin data classes
JSON to Python
Convert JSON to Python dataclass, TypedDict, or Pydantic model
JSON to C#
Convert JSON data to C# class definitions
Markdown to HTML
Convert Markdown text to HTML markup
HTML to Markdown
Convert HTML markup to Markdown text
TOML to YAML / YAML to TOML
Convert between TOML and YAML configuration formats
JSON to Zod Schema
Convert JSON data to Zod validation schemas
JSON to JSON Schema
Generate JSON Schema from JSON data
GraphQL to TypeScript
Convert GraphQL schema to TypeScript types
JSON to Rust Struct
Convert JSON data to Rust struct definitions with serde
XML to JSON
Convert XML markup to JSON format
JSON to Dart
Convert JSON to Dart/Flutter classes
JSON to Protobuf
Convert JSON to protobuf
SQL→Prisma変換
SQLをPrismaスキーマに変換
テキストからPDF変換
プレーンテキストをカスタム書式オプション付きでPDFドキュメントに変換
16進数→ 10進数変換
16進数、10進数、2進数の数値システム間で変換
YAML ↔ JSON コンバーター
YAMLとJSON形式間をリアルタイムプレビュー付きで変換
Hex→RGB変換ツール
HexカラーコードとRGB値をカラープレビュー付きで変換
8進数10進数変換ツール
8進数と10進数の相互変換（2進数・16進数出力付き）
ローマ数字変換ツール
数字とローマ数字の相互変換（日付変換機能付き）
Byte Converter
Convert between bytes, KB, MB, GB, TB and other file size units
ASCII Text Converter
Convert between ASCII codes and text characters with reference table
Hex to Binary Converter
Convert between hexadecimal and binary number systems
Fraction Decimal Converter
Convert between fractions and decimal numbers with simplification
Scientific Notation Converter
Convert between scientific notation and standard numbers
IP to Binary Converter
Convert IP addresses to binary and binary to IP format
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates
Base64 to Hex Converter
Convert Base64 encoded data to hexadecimal format
JSON to Table
Convert JSON data to an interactive, sortable HTML table with search, filter, and CSV export
Base64 画像変換ツール
画像を Base64 文字列に変換、または Base64 を画像に変換
JSON→CSV変換ツール
JSON配列をCSV形式に変換。ネストされたオブジェクトの展開とCSVダウンロードに対応
画像圧縮ツール
調整可能な品質で画像を無料でオンライン圧縮。JPEG、PNG、WebP出力対応
Yaml To Json
Yaml To Json - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
SVG to PNG 変換
SVGファイルをカスタムサイズと背景のPNG画像に変換
Json To Yaml
Json To Yaml - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Html To Markdown
Html To Markdown - Free online tool for HTML processing. Fast, secure, and easy to use.
Csv To Json
Csv To Json - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Json To Xml
Json To Xml - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Curl To Javascript
Curl To Javascript - Free online tool for URL encoding/decoding. Fast, secure, and easy to use.
Js To Typescript
Js To Typescript - Free online tool for IP address calculation. Fast, secure, and easy to use.
Json To Csv
Json To Csv - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Json To Zod
Json To Zod - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Ts To Js
Ts To Js - Free online tool for data processing. Fast, secure, and easy to use.
Base64 Image Decoder
Convert Base64 image data back to image files
JSON to XML Converter
Convert JSON to XML
Regex Builder
Regex Builder - Free online tool for Regular expression testing. Fast, secure, and easy to use.
Javascript Event Loop Visualizer
Javascript Event Loop Visualizer - Free online tool for IP address calculation. Fast, secure, and easy to use.
ASCII Art Generator
Convert text to ASCII art with various fonts and styles
Yaml To Json
Yaml To Json - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Xml To Json
Xml To Json - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
SVG to CSS Converter
Convert SVG images to CSS background images using data URIs. Optimize SVGs for CSS usage with encoding and minification.
Json To Yaml
Json To Yaml - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Yaml To Json
Yaml To Json - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Docker Run To Compose
Docker Run To Compose - Free online tool for Docker configuration. Fast, secure, and easy to use.
Typescript Playground
Typescript Playground - Free online tool for IP address calculation. Fast, secure, and easy to use.
Svg To React
Svg To React - Free online tool for SVG processing. Fast, secure, and easy to use.
Xml Formatter
Xml Formatter - Free online tool for XML processing. Fast, secure, and easy to use.
Html To React
Html To React - Free online tool for HTML processing. Fast, secure, and easy to use.
Csv To Json
Csv To Json - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Json To Typescript
Json To Typescript - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Markdown To Html
Markdown To Html - Free online tool for HTML processing. Fast, secure, and easy to use.
Typescript To Javascript
Typescript To Javascript - Free online tool for IP address calculation. Fast, secure, and easy to use.
ASCII Table Generator
Generate ASCII tables from CSV, JSON, or tabular data
Number Base
Number Base - Free online tool for Number base conversion. Fast, secure, and easy to use.
Markdown Link Checker
Markdown Link Checker - Free online tool for Markdown processing. Fast, secure, and easy to use.
String Utilities
String Utilities - Free online tool for String manipulation. Fast, secure, and easy to use.
Json To Mysql Schema
Json To Mysql Schema - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Svg To Png
Svg To Png - Free online tool for SVG processing. Fast, secure, and easy to use.
Cron式変換
Cron式を日本語に変換
TOML ↔ JSON コンバーター
TOMLとJSON形式間の変換
JS to TSX Converter
Convert JavaScript and JSX files to TypeScript TSX with automatic type annotations and React type inference.
エポックコンバーター
Unixエポックタイムスタンプと人間が読める日付を相互変換
JSON to Swift
Convert JSON to Swift Codable structs
JSON to PHP
Convert JSON to PHP arrays/classes
HTML to Pug
HTMLをPug (Jade) テンプレートに変換
YAML to TOML
YAMLとTOML形式の相互変換
TypeScript to Zod
TypeScript型をZodスキーマに変換
SQL to MongoDB
SQLクエリをMongoDBに変換
.env to JSON
.envとJSON形式の相互変換
JSON to GraphQL Schema
Convert JSON to GraphQL types
OpenAPI to TypeScript
Convert OpenAPI schemas to TypeScript
JSON to SQL
Convert JSON data to SQL INSERT statements
Hex to Text
Convert between hex strings and text
JSON to Scala
Convert JSON to Scala case classes
ASCII to Hex
Convert between ASCII text and hex
Binary to Text
Convert between binary and text
Text to Morse Code
Convert text to Morse code and back
XML to CSV
Convert XML data to CSV format
PNG to JPG
Convert images between PNG and JPG
cURL からコードへのコンバーター
cURL コマンドをコードに変換
JSON to Rust Struct
Convert JSON data to Rust struct definitions with serde support
TOML to YAML Converter
Convert TOML configuration files to YAML format
SVG to CSS Converter
Convert SVG to CSS background-image data URI
JSON to Protobuf
Convert JSON to Protocol Buffer definitions
Unix タイムスタンプ変換
Convert between Unix timestamps and human-readable dates
SQL to JSON Schema
Convert SQL CREATE TABLE to JSON schema
SVG Editor
Edit and preview SVG code
画像リサイズツール
Resize images online for free with custom dimensions
画像トリミングツール
Crop images online for free with custom areas
WebP変換ツール
Convert images to and from WebP format
HTMLからテキスト変換
Convert HTML to plain text
TOML ↔ JSON Converter
Convert TOML to JSON and JSON to TOML online instantly
INI ↔ JSON Converter
Convert INI config files to JSON and JSON to INI online
Plist ↔ JSON Converter
Convert Apple Property List (plist) XML to JSON and back
About Free Online Code & Data Converters
DevToolBox provides a collection of free online developer tools to help you efficiently complete everyday development tasks. This category includes 120 tools, all running directly in your browser with no installation required. Your data stays on your device and is never sent to our servers, ensuring complete privacy.
All tools are completely free with no registration or login required. Available in 15 languages for developers worldwide.