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Developer calculators & tools
36 free developer tools. Pick one below or use the search box.
Encoding, Crypto & Security
11
Password Generator
Base64 Encoder
Base64 Decoder
Base64 to File Converter
Base32 Encoder & Decoder
Base58 Encoder & Decoder (Base58Check)
Base85 Encoder & Decoder (Ascii85, Z85)
Hex Encoder (Text to Hex)
Hex Decoder (Hex to Text)
Hex to Text Converter
Online Hex Editor
Text & Data Formats
10
JSON Formatter & Beautifier
JSON Validator
JSON Minifier
JSON to CSV Converter
JSON to XML Converter
JSON to YAML Converter
JSON to TypeScript Interface Generator
JSON to Go Struct Converter
JSON to Python Dataclass / Pydantic Model
JSON to Java Class (Record / POJO) Generator
Programming Helpers
9
Regex Tester (JavaScript)
Regex Generator for Common Patterns
Regex Cheat Sheet with Live Examples
Regex Explainer — Regular Expression in Plain English
Regex Replace Tool
Regex to English Explainer
Email Regex Tester & Patterns
URL Regex Tester & Patterns
Phone Number Regex Tester
Network & Web Utilities
6
IP Range Calculator (CIDR ↔ Range)
IP to Decimal Converter
IP to Binary Converter
IP to Hex Converter
IPv4 to IPv6 Converter
IPv6 Expander — Full Address Form