Tech & Web
Utilities for formatting, password generation, color spaces, file sizes, and QR codes.
Number Base Converter
Convert numbers between binary, octal, decimal, hexadecimal, and custom bases (2 to 36).
Open Calculator →Offline QR Code Generator
Generate offline QR codes for links, text, or Wi-Fi configurations without external tracker calls.
Open Calculator →Secure Password Generator
Generate strong, cryptographically secure passwords with custom entropy rules.
Open Calculator →JSON Formatter & Validator
Validate, prettify, format, and minify JSON strings with instant syntax error locations.
Open Calculator →Crypto Hash Generator
Generate MD5, SHA-1, and SHA-256 hashes from target text values completely offline.
Open Calculator →URL Encoder / Decoder
Encode or decode strings for safe query parameter passing in URLs.
Open Calculator →Unix Epoch Timestamp Converter
Convert Unix epoch timestamps to human-readable dates, and dates back to timestamps.
Open Calculator →Base64 Encoder / Decoder
Convert binary or plain text strings into safe Base64 representation, and decode it back.
Open Calculator →IP Address & Subnet Calculator
Calculate subnets, usable host ranges, wildcard masks, and binary representations for IPv4 addresses.
Open Calculator →