Free online tools for calculations, color work, voice effects, and conversion workflows. No signup required, with browser-based utilities and practical step-by-step guides.
Scientific, GPA, and compound interest calculators. Solve math and finance problems instantly in your browser.
Explore Calculators →Pick colors from images, convert between HEX, RGB, and HSL formats. Essential tools for designers and web developers.
Explore Color Pickers →Generate speech from text with adjustable speed and pitch. Create rap-style TTS, funny voices, robot voices, and more.
Explore Text to Speech →Complete guides to converting YouTube videos and audio files to MP3 format. Compare the best tools available.
Explore MP3 Converters →Download YouTube videos as MP4, convert between video formats, and learn about video quality settings.
Explore Video Converters →Full-featured scientific calculator with trigonometric functions, logarithms, exponents, and more. Works on any device.
Upload any image and extract exact color values in HEX, RGB, and HSL. Build palettes from photos instantly.
Choose colors visually and get instant CSS code. Supports HEX, RGB, and HSL formats with color harmony suggestions.
Enter or browse hex color codes with real-time preview. Convert between HEX, RGB, and HSL with one click.
Mix colors with R, G, B sliders (0-255) and see live preview. Instant HEX, HSL, and CSS code conversion.
Generate rap-style speech with adjustable speed and pitch. Try presets for chipmunk, robot, and deep bass voices.
Calculate your cumulative GPA by entering courses, credit hours, and letter grades on the 4.0 scale.
See how your savings grow over time with compound interest. Visual growth chart shows deposits vs interest.
Step-by-step guide to the best tools for converting YouTube videos to MP3 audio files.
Download full YouTube playlists as MP3 with batch workflows, bitrate planning, and troubleshooting tips.
Convert YouTube Shorts audio to MP3 with safer tools, mobile steps, bitrate guidance, and troubleshooting fixes.
Extract audio from MP4 files safely with bitrate rules, troubleshooting checklists, and mobile-friendly workflows.
Convert large WAV files to MP3 with practical bitrate defaults, batch workflows, and quality control steps.
Convert OGG files to MP3 with safer download checks, bitrate guidance, and troubleshooting for desktop and mobile.
Convert lossless FLAC libraries to MP3 with quality-first settings, smaller files, and safer workflow checks.
Convert M4A files to MP3 with compatibility-first settings, metadata checks, and batch-safe conversion workflows.
Extract audio from WEBM files with stable bitrate presets, safer downloads, and repeatable QA checks.
Convert OPUS voice notes and recordings to MP3 with practical bitrate defaults, safety checks, and batch-ready QA.
Extract audio from QuickTime MOV files with stable bitrate defaults, safer downloads, and repeatable quality checks.
Convert MKV containers to MP3 with reliable track selection, bitrate planning, and safer workflow checks.
Extract audio from AVI files to MP3 with stable bitrate defaults, safer downloads, and repeatable quality checks.
Convert legacy WMA files to MP3 with practical bitrate defaults, safer downloads, and repeatable QA checks.
Download YouTube videos in MP4 format. Compare 7 free tools with quality and feature breakdown.
Plot equations and visualize functions interactively. Supports polynomials, trig, logarithms with zoom and pan.
Guide to the best AI voice generators for creating celebrity and presidential text to speech voices.
Calculate percentages, find percentage change, and convert between values. Four calculation modes in one tool.
Estimate your US federal income tax, effective rate, and take-home pay with a 2025 bracket breakdown.
Create hilarious voice effects with chipmunk, robot, monster, and 7 more funny presets. Free and instant.
ToolChemy provides free online tools that work without signups. Our calculators, color pickers, and browser-based text to speech tools process inputs locally when possible, while converter pages explain when a request uses a server-side provider.
Whether you need to solve a math problem with our scientific calculator online, extract colors from a photo with our color picker from image tool, calculate your GPA online, generate text to speech rap, or learn how to convert video with our YouTube video to MP4 converter guide, ToolChemy has you covered.