All Tools
Browse the full collection of developer utilities.
API Request Tester
Test API endpoints in your browser by sending HTTP requests, customizing headers and bodies, and inspecting status codes, timing, and responses.
Open tool →Base64 Encode / Decode
Encode text to Base64 or decode Base64 strings instantly in your browser for debugging, data transfer, integrations, and web development tasks.
Open tool →BMI Calculator
Calculate body mass index from your height and weight with a fast online BMI calculator for quick health check-ins and progress tracking.
Open tool →Color Converter
Convert HEX, RGB, and HSL color values instantly in your browser for CSS styling, design systems, and frontend development work.
Open tool →Compound Interest Calculator
Calculate compound interest growth for savings and investments with contributions, compounding frequency, and year-by-year projections.
Open tool →Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text instantly in your browser for verification, testing, and development work.
Open tool →.htaccess Generator
Create Apache .htaccess files for redirects, caching, compression, and security headers with a fast visual generator.
Open tool →Image Converter
Convert images between PNG, JPEG, WebP, and BMP formats directly in your browser for fast format changes without extra software.
Open tool →JSON Formatter / Minifier
Format, validate, and minify JSON instantly in your browser to clean API payloads, debug responses, and improve readability.
Open tool →JSON to YAML Converter
Convert JSON to YAML instantly in your browser for configuration files, APIs, automation scripts, and developer workflows.
Open tool →Password Generator
Generate strong random passwords with customizable length and character options to create safer account credentials in seconds.
Open tool →Password Strength Checker
Check password strength instantly and get practical suggestions to improve weak passwords before you use them online.
Open tool →Percentage Calculator
Calculate percentages, percentage increase, percentage decrease, and percentage change with a fast online percentage calculator.
Open tool →Regex Tester
Test regular expressions in your browser with live matches and clear explanations for faster search, validation, and parsing work.
Open tool →Subnet Calculator
Calculate subnet masks, network and broadcast addresses, host ranges, wildcard masks, and usable hosts from any IPv4 CIDR block.
Open tool →Text Case Converter
Convert text to uppercase, lowercase, title case, and other formats instantly in your browser for editing and content cleanup.
Open tool →Unit Converter
Convert units for length, weight, temperature, and more with a fast browser-based unit converter for everyday calculations.
Open tool →Word Counter
Count words instantly in your browser for writing, SEO, academic work, content planning, and any task with length limits.
Open tool →YAML to JSON Converter
Convert YAML to JSON instantly in your browser for configs, APIs, developer tooling, and quick data transformation tasks.
Open tool →No tools match that filter. Try a different category or a broader term like JSON, password, or calculator.