All Tools

Instantly compare text and code with live diffing, side-by-side and inline views, word/character highlighting, and whitespace ignore options. Secure and client-side.

Advanced JSON formatter, validator, tree viewer, and data converter with real-time validation and error highlighting.

Format, validate, and convert YAML files with comment preservation. Convert YAML to JSON, XML, and TOML with advanced linting.

Universal data format converter with auto-detection. Convert between JSON, YAML, XML, and TOML seamlessly with intelligent format recognition.

Generate realistic mock data with customizable schemas. Create JSON, CSV, SQL, XML, and YAML datasets with 25+ data types for testing and development.

A powerful, free online tool to generate realistic mock and dummy data. Build custom schemas, choose from dozens of data types, and export in JSON, CSV, or SQL formats.

A powerful, browser-based GraphQL IDE powered by GraphQL Editor. Visually explore schemas, write queries with a smart editor, and test your API in a single interface.

Interactive simulator that contrasts synchronous versus asynchronous gateway architectures under load spikes.

Encode text to Base64 or decode Base64 to text instantly. Supports Unicode characters with real-time bidirectional conversion and one-click copy functionality.

Encode URLs and decode URL-encoded strings instantly. Choose between component encoding (for query parameters) or full URL encoding with real-time conversion.

Encode HTML characters for safe web content and decode HTML entities back to text. Supports basic and full entity encoding with XSS prevention.

Convert text to 30+ formats: Base64, URL encoding, HTML escape, Morse code, camelCase, snake_case, Unicode normalization, Binary, Hex, and more with real-time conversion.

A fast and powerful online unit converter for length, weight, temperature, data, and typography.

Convert bits, bytes, KB, MB, GB, KiB, and MiB instantly. Calculate file download times over various internet speeds and estimate storage capacity on different media.

A versatile and precise on-screen protractor, angle meter, and spirit level. Measure angles on images, designs, or use your phone's camera and sensors for real-world measurements.

Create professional bar charts with an intuitive data editor. Import/export CSV data, customize colors, and export high-quality charts.

Calculate wheel rotations and visualize turning paths for LEGO SPIKE Prime robots. Generate Python code for precise motor control.

An interactive physics simulation of Newton's Cradle. Adjust the number of balls, elasticity, and gravity to explore the laws of conservation of momentum and energy.

Generate custom placeholder text with multiple themes (Lorem, Pirate, Corporate) and developer random strings with customizable character sets and lengths.

Instantly convert text between UPPERCASE, lowercase, Title Case, Sentence Case, camelCase, snake_case, and more. A free, powerful, and easy-to-use online tool for writers, developers, and marketers.

Convert text between different cases: uppercase, lowercase, title case, camelCase, snake_case, kebab-case, and more with real-time preview.

A powerful free tool to count words, characters, sentences, and paragraphs.

A powerful tool to remove duplicate lines, sort text alphabetically or numerically, and filter lists.

Decode, inspect, and verify JSON Web Tokens (JWTs) securely in your browser. Features real-time validation, timestamp conversion, and signature verification.

Advanced JWT token generator with key pair generation, custom claims, and multiple algorithms. Create, customize, and export JWT tokens with ease.

Generate cryptographic hashes (SHA-256, SHA-512, MD5) for files and text. Drag-and-drop files or paste text for instant hash generation with integrity verification.

Generate cryptographically secure passwords with customizable options. Configure length, character sets, and patterns using crypto.getRandomValues() for true randomness.

Real-time password strength analysis with detailed feedback. Check password security based on length, character variety, and common patterns without sending data anywhere.

Encrypt and decrypt text using AES-256-GCM encryption. Secure text sharing with password-based encryption that never leaves your browser.

Generate RSA public/private key pairs directly in your browser. Create keys for SSH, encryption, or signing with customizable key sizes and formats.

Generate Version 4 (random) universally unique identifiers using crypto.randomUUID(). Create single or bulk UUIDs with various formats and validation.

Adjust the volume of audio or video files online. Increase, decrease, or mute volume with real-time preview, processed directly in your browser.

Resize video dimensions online. Change resolution to 1080p, 720p, 480p, or custom width, preserving aspect ratio. Supports MP4, WebM, MOV.

Capture high-quality JPG or PNG thumbnails from any video frame. Seek to exact time, preview, and download, all in your browser.

Reduce video file size online. Compress MP4, WebM, MOV with adjustable quality presets (low, medium, high), processed in your browser.

Extract audio from video files (MP4, MOV, WebM) to MP3, WAV, AAC, OGG. Fast, private, and browser-based conversion.

Convert video files online between MP4, WebM, MOV, AVI, and more. Fast, private, and browser-based conversion.

Trim, cut, and convert videos to GIF or MP4. Extract audio to MP3. Fast, private, and browser-based video editing.

Instantly convert any image into beautiful ASCII art with our free, live-preview tool. Customize character sets, control detail, and even generate color ASCII art.

Create highly-customizable QR codes (URL, vCard, Wi-Fi, SMS, etc.) and download as PNG or SVG.

Create professional, fully custom QR codes online. Generate QR codes for links, Wi-Fi, vCards, social media, and more. Add frames, logos, colors, and shapes.

Instantly convert between meters, feet, miles, and other length units.

Convert J/kg, Btu/lb, cal/g, and other specific energy units.

Convert J/m³, Btu/ft³, J/L, and other volumetric energy density units.

Convert temperature differences or changes (e.g., a change of 10°C).

Convert coefficients of thermal expansion (e.g., 1/K, 1/°C, 1/°F).

Convert thermal resistance units like K/W and °F·h/Btu.

Convert thermal conductivity units like W/(m·K) and Btu·in/(h·ft²·°F).

Convert specific heat units like J/(kg·K), Btu/(lb·°F), and cal/(g·°C).

Convert heat density units like J/m², Langley, and Btu/ft².

Convert heat flux units like W/m², Btu/(h·ft²), and solar irradiance.

Convert U-value units like W/(m²·K) and Btu/(h·ft²·°F).

Quickly convert between kilograms, pounds, ounces, and other mass units.

Convert between Celsius, Fahrenheit, and Kelvin temperature scales.

A comprehensive volume converter for metric and imperial units.

Convert between square meters, hectares, acres, square feet, and more.

Convert between Pascal, Bar, PSI, Atmospheres, and more.

Convert between Joules, Calories, kWh, BTU, eV, and more.

Convert between rad/s, RPM, degrees per second, and more.

Convert between m/s², g-force, ft/s², and more.

Convert kg/m³, g/cm³, lb/ft³, and other density units.

Convert m³/kg, ft³/lb, cm³/g, and other specific volume units.

Convert kg·m², lb·ft², slug·ft², and other moment of inertia units.

Convert N·m, lbf·ft, kgf·m, and other torque units.

Convert N·m, lbf·ft, lbf·in, and other common torque units.

Convert between various flow rate units like m³/s, L/min, GPM, and more.

Convert between various mass flow rate units like kg/s, lb/s, tonne/h, and more.

Convert between various molar flow rate units like mol/s, kmol/h, mmol/min, and more.

Convert mass flux density units like kg/(m²·s), lb/(ft²·h), and more.

Convert molar concentration units like mol/L, mmol/L, kmol/m³, and more.

Convert mass concentration units like kg/L, g/L, ppm, and lb/gal.

A free, interactive compound interest calculator to forecast your investment growth. See how principal, contributions, and time impact your savings with a dynamic chart and year-by-year breakdown.

A free, interactive calculator to determine how much you need to save weekly or monthly to reach your financial goals. Visualize your savings growth and plan for the future.

The fastest and easiest tip calculator. Instantly calculate the tip and split the total bill per person with smart rounding options. Perfect for restaurants and dining out.

A free, advanced ROI calculator to measure the profitability of your investments. Calculate total net profit, ROI percentage, and the annualized rate of return for a true performance analysis.

Calculate monthly mortgage payments, total interest, and create detailed amortization schedules. Compare different loan scenarios with interactive charts and CSV export.

Calculate your Body Mass Index (BMI) with our free, visual calculator. Instantly see your BMI on a color-coded chart and find your ideal healthy weight range.

A free, science-based calculator to estimate your daily calorie needs for weight loss, maintenance, or gain. Get a personalized macronutrient breakdown for protein, carbs, and fat.

Find nutrition facts for thousands of foods with our free calculator. Look up calories, protein, carbs, and fat, and build your meals to track your daily intake.

Create beautiful color schemes from your photos. Upload an image, and our tool will automatically extract a harmonious color palette with tints and shades for your design projects.

A powerful, free online tool to convert colors between HEX, RGB, HSL, and CMYK. Generate color harmonies, tints, shades, and check WCAG accessibility contrast ratios in real-time.

A powerful, visual tool to create stunning linear, radial, and conic CSS gradients. Browse a gallery of presets, customize every aspect, and export as CSS code or a PNG image.

The ultimate tool to create, browse, and generate stunning CSS gradients. Use the advanced editor, explore a curated gallery of presets, or use AI to generate unique gradients from a text description.

A comprehensive suite of visual tools to generate CSS for box-shadows, text-shadows, flexbox, gradients, and more. A true all-in-one CSS playground.

A powerful, visual tool to create beautiful, layered CSS box-shadows. Choose from a gallery of presets or build complex shadows from scratch with an intuitive, real-time editor.

Visually design complex, multi-layered text-shadows with a real-time preview.

Interactively learn and generate CSS Flexbox layouts. Control container and item properties with a real-time visual preview.

Easily generate CSS for complex border-radius shapes. Control all four corners individually or together.

Create linear, radial, and conic CSS gradients with a simple, interactive editor.

Generate smooth CSS transitions. Control property, duration, timing function, and delay.

Visually generate 2D CSS transforms like scale, rotate, translate, and skew.

Design beautiful, modern CSS buttons with a visual editor. Customize padding, colors, border-radius, and shadows.

Plan LEGO SPIKE move_for_degrees turns with steering sync, clearance visuals, and ready-to-run Python code.

Watch a LEGO wheel roll across a meter, connect spins to centimeters, and grab ready-to-run move_for_degrees code.

Watch a LEGO wheel roll across a meter, connect spins to centimeters, and grab ready-to-run move_for_degrees code.

Understand steering values with instant turn radius previews, velocity insights, and classroom-ready code.

Forecast where timed steering moves end up with arc visuals, distance estimates, and loop helpers.

Experiment with tank drive velocities using presets, live path previews, and code that matches classroom maneuvers.

Interactive 3D simulator for the LEGO SPIKE Prime Break Dancer robot.

Interactive 3D simulator for the LEGO SPIKE Prime Delivery Cart robot.

Choreograph precise tank-drive moves with per-wheel distances, pose estimates, and sequence planning.

Design timed tank-drive routines step-by-step with animated previews and loop-ready Python code.

A 14-week LEGO SPIKE Prime robotics curriculum companion with teacher scripts, metaphors, and classroom-ready Python examples.

A self-guided 14-week LEGO SPIKE Prime companion for students, with clear steps, code, and links to official LEGO resources.

Interactive 3D simulator for LEGO SPIKE Prime Drive Base 2 with Python code execution, motor control, and light matrix visualization.

An interactive physics simulation of a simple pendulum. Adjust length, gravity, and friction to study simple harmonic motion and the conservation of energy.

An interactive physics lab to simulate projectile motion. Adjust velocity, angle, gravity, and air resistance to understand the trajectory of objects in flight.

Interactive physics simulations covering mechanics, oscillations, waves, and more. Explore 40+ physics concepts with real-time simulations.

A simulation of a double pendulum, a classic example of chaotic motion.

A simple pendulum simulation where the pivot point can be moved.

A chaotic double pendulum with a moveable pivot point.

Simulate an inverted pendulum with a vibrating pivot, demonstrating dynamic stabilization.

Interactive 2D spring physics simulation demonstrating harmonic motion, energy conservation, and damping effects.

A powerful, free calculator to track your course grades, determine what you need on the final exam, and calculate your semester GPA. All in one easy-to-use tool.

Create beautiful, presentation-ready charts and graphs online for free. Our easy-to-use chart maker helps you visualize your data in minutes. No registration required.