Converter Hub

Copy-Paste Converter Hub

Fast, offline developer tools. No ads, no login.

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converters Tools

Timestamp to Date Converter

Convert Unix timestamps (seconds/milliseconds) to human-readable dates and vice versa. Supports local and UTC time.

JSON to CSV Converter

Convert JSON arrays to CSV format. Strict validation ensures simple, flat data structure.

Number Base Converter

Convert numbers between Binary, Decimal, and Hexadecimal.

dev Tools

JSON Formatter & Validator

Prettify minified JSON, validate structure, and fix common errors inline.

JWT Decoder

Decode JSON Web Tokens (JWT) instantly to view their header and payload. Client-side only.

HTML Escape / Unescape

Convert special characters to HTML entities and back.

UUID Generator

Generate random UUIDs (v4) instantly. Secure and collision-resistant.

JSON Minifier

Compress JSON data by removing whitespace to save space.

Password Generator

Create secure, random passwords locally in your browser.

encoders Tools

Base64 Encoder / Decoder

Convert text to Base64 format and back. Handles UTF-8 characters correctly.

URL Encoder / Decoder

Encode special characters in URLs to make them safe for transmission.

text Tools

Text to SQL IN List

Turn a list of items (newline or comma separated) into a SQL format set (e.g. ("a", "b")).

Case Converter

Transform text case: camelCase, snake_case, PascalCase, kebab-case, and more.

Word & Character Counter

Count words, characters (with/without spaces), lines, and estimated reading time.

Line Sorter & Deduplicator

Sort lists of text alphabetically and remove duplicate lines.