Got messy bills from group trips or dinners? This free smart true-up calculator optimizes and reduces your transactions. Generate an ultra-simple settlement plan!
Free Large Language Model (LLM) API cost calculator powered by OpenRouter. Compare GPT-5.4, Claude 4.6, Gemini 3.1, and DeepSeek V3.2. Includes cache hit discounts and context-based tiered pricing computations.
Discover how much top YouTubers like MrBeast, PewDiePie, Markiplier, and Dude Perfect make! Analyze any channel revenue with our 2026 dynamic CPM model. Data may have a 1-24 hour delay.
Generate high-quality speech from text using the latest MiMo v2 TTS API. Support styles, voice selection, and emotions.
Zodiac test and compatibility calculator. Discover your cosmic match with deep connection insights, soul essences, and relationship red flags for all 12 signs.
Experience the classic Snake game with ultimate immersion. Featuring input buffering for smooth controls, high-DPI full-screen support, and multiple difficulty levels.
Converter, Compressor, Watermark, Privacy. Free, privacy-first online image tool. Process images locally in your browser.
Next-Gen 3D Graphics Benchmark (PBR). Stress test your GPU with cinematic quality rendering. Features anti-cheat, virtual resolution, and enhanced shader complexity for accurate mobile and PC comparisons.
Measure your GPU raw compute power with heavy shader math loops. Test float operations, trigonometry, and pure FLOPS performance.
Test your processor speed online with multi-core stress testing. Measures Integer, Float, Memory, and Crypto performance. Note: Please keep this page focused during the test.
Free online screen test tool. Detect dead pixels, stuck pixels, and backlight bleeding. Add custom HEX colors and share your config via link.
Test monitor contrast, color banding, and black level limits. Includes 256-level gradient chart and OLED black level challenge.
Play free online Sudoku with 4 difficulty levels, auto-save, and notes mode. Improve your logic and memory with this brain training game.
Measure your true visual reaction time by averaging 5 attempts. Compare your reflex speed with pro gamers and global statistics.
Classic Make 24 puzzle game. Features a Practice Mode with no time limit to sharpen your skills, and a Ranked Mode with a 60-second limit to compete globally.
Online Color Sensitivity Test. Can you distinguish subtle color shades? Challenge your visual perception and color discrimination skills with this professional-grade test based on HSL color space.
Take this professional online color blindness test based on dynamic Ishihara plates. Assess your red-green color vision deficiency quickly. Challenge yourself with our timed survival mode starting with 15 seconds.
Improve your aiming skills with our free online FPS aim trainer—the best browser-based Aim Lab alternative. Practice accuracy, reaction time, and precision for CS:GO, Valorant, and Overwatch. No download required.
Test your short-term memory with this online sequence recall game. Watch the flashing tiles and repeat the pattern. A free brain training exercise to boost your working memory and focus.
Test your drawing skills with the Perfect Circle Game. Can you draw a 100% perfect circle? Challenge your mouse accuracy now.
Generate and copy aesthetic fonts for your Instagram Bio and captions. Stand out with stylish, cursive, and bold text styles that work everywhere.
Create your perfect soundscape by mixing rain, thunder, coffee shop noise, and more. Ideal for blocking distractions, boosting productivity, or relaxing after a long day.
A simple and aesthetic Pomodoro Timer to boost your productivity. Customize your focus and break intervals.
Can't decide? Spin the wheel to make a random choice instantly. This free online decision wheel picker helps you settle disputes, choose winners, or just have fun.
Convert Unix timestamp to human-readable date and vice versa. Support for milliseconds, seconds, and timezones. Essential tool for developers to debug Epoch time and fix date parsing errors.
Play the classic 2048 puzzle game online for free. Join the numbers, reach the 2048 tile, and compete on the global leaderboard. Features anti-cheat and mobile support.
Plan your Financial Independence, Retire Early (FIRE) journey. Calculate savings rate, compound interest growth, and retirement age based on the 4% rule. Compare with global users.
Secure, browser-based PDF utility toolkit. Convert images to PDF, merge multiple files, or extract pages instantly without uploading your data to any server. Supports opening and processing password-protected PDFs.
Start with $10,000 virtual capital. How much can you make in 10 rounds? No sign-up, zero risk—experience the thrill of stock & crypto trading with the most realistic K-line replay game online.
Connect matching colors with lines to fill the entire circular grid. Ensure no lines cross or overlap. A relaxing yet challenging topology puzzle game to train your spatial reasoning and logic skills.
Can you beat a chimpanzee's memory? Test your visual working memory and cognitive speed with this famous experiment from Kyoto University. A challenging brain game to improve your short-term memory.
Challenge your selective attention and cognitive flexibility with the classic Stroop Test. How fast can you identify the color, not the word?
Test your hearing range and discover your hearing age. Discover which frequencies you can hear with this free online hearing test.
Create stunning Bar Chart Race animations in your browser. Upload CSV/Excel files, visualize data racing dynamics. 100% client-side, your data never leaves your device.
Turn your phone into a glowing LED banner! Perfect for concerts, sports events, and parties. Customize your scrolling text with colors, speed, and blinking effects. Screen stays on with Wake Lock.
Turn your phone into a glowing light stick! Perfect for concerts, parties, and events. Choose from vibrant colors and add pulsing effects. Screen stays on with Wake Lock.
Free online decibel meter using your phone's microphone. Measure sound levels in real-time, perfect for concerts, noise monitoring, and audio testing. Privacy-first: audio processed locally only.
Explore all 118 chemical elements with our interactive periodic table. View atomic mass, electron configuration, melting points, and more. Perfect for students and chemistry enthusiasts.
Calculate the molar mass of any chemical compound instantly. Enter a formula like H2O or NaCl and get precise molecular weight in g/mol with element breakdown.
Balance chemical equations instantly using our free online calculator. Get correct stoichiometric coefficients for any reaction. Supports parentheses and polyatomic ions.
Calculate what score you need on your final exam to get your desired grade. Free online tool for students to plan their study goals.
Free GPA calculator supporting US 4.0/4.3, Canada, Australia, China, UK scales. Create custom grading scales, import/export settings, and calculate with grades or scores.
A warm visualization tool for your time. Enter your birthdate to generate your life canvas. See the flow of time, cherish the present, and plan your wonderful life. Your settings are saved locally. We recommend bookmarking this page to visit often.
A romantic cosmic clicker game. Forge elements from Hydrogen to Gold through the life and death of a star.
The best free metronome online to match your beats. Find the perfect BPM for any song instantly. Professional rhythm standards similar to Incredibox. Includes key finder tips.
Free online pixel art converter. Transform your photos into retro 8-bit style pixel art instantly. Adjust pixel size and download high-quality images.
Free online glitch art generator. Apply RGB shift, scanlines, and digital noise to your photos. Create cool cyberpunk and vaporwave aesthetic images instantly.
Draw beautiful mandalas and symmetrical patterns with this free online symmetry painting tool. Features multi-axis reflection, neon glow effects, and customizable brushes.
Is buying a house financially better than renting? Calculate the true cost by factoring in home appreciation, investment returns, and opportunity costs. Visualize your net worth over 30 years.
Play 3 Tiles online! The addictive tile matching puzzle. Features 15 levels, auto-save to resume progress, and stage selection. Free & no download!
A fullscreen interactive game for cats! Mice, bugs, and laser dots run across the screen. Let your cat chase and catch them!
Free online QR code generator and scanner. Create QR codes for URLs, WiFi, vCard, email, phone and text. Scan QR codes with camera or image upload. No data sent to servers.
Test your keyboard's N-Key Rollover (NKRO) and detect anti-ghosting limits. See how many keys your keyboard can register simultaneously.
Track gifts and monetary exchanges with friends & family. Auto-calculate balances, view per-person timelines, export data. All data stays in your browser.
Format, validate, and beautify your JSON data online. Easily navigate complex JSON structures with our interactive & searchable tree view.
Test, debug, and learn Regular Expressions online with real-time highlighting and capture group extraction. 100% private and runs securely in your browser.