# ToolCenterHub > Free browser-based tools for designers, developers, and everyone. No signup required. ToolCenterHub is a free online toolbox with 46 tools across five categories: Color Tools, Random Tools, Developer Tools, Document Tools, and Health Tools. All tools run entirely in your browser — no account, no installation, and no data sent to a server. ## Color Tools - [Color Palette Generator](https://toolcenterhub.com/color/palette-generator): Generate harmonious 5-color palettes from any starting hue. - [CSS Gradient Generator](https://toolcenterhub.com/color/gradient-maker): Build linear and radial CSS gradients with live preview. - [WCAG Contrast Checker](https://toolcenterhub.com/color/contrast-checker): Test color pairs against WCAG 2.1 AA and AAA accessibility standards. - [CSS Box Shadow Generator](https://toolcenterhub.com/color/shadow-generator): Generate CSS box shadows with slider controls and live preview. - [Color Format Converter](https://toolcenterhub.com/color/format-converter): Convert HEX to RGB, HSL, RGBA, and CSS custom properties. - [Tints and Shades Generator](https://toolcenterhub.com/color/tints-shades-generator): Generate a full 11-step color scale from any hex color. - [Color Scheme Generator](https://toolcenterhub.com/color/schemes-generator): Generate complementary, analogous, and triadic color schemes. - [Color Name Finder](https://toolcenterhub.com/color/colornames-finder): Find the closest CSS named color for any HEX code. - [Image Color Extractor](https://toolcenterhub.com/color/image-picker): Upload an image and extract its dominant color palette. ## Random Tools - [Wheel Spinner](https://toolcenterhub.com/random/wheel-spinner): Spin the wheel for classrooms, giveaways, and decisions. - [Yes or No Wheel](https://toolcenterhub.com/random/yesno-wheel): Spin the yes or no wheel for instant random decisions. - [Dice Roller](https://toolcenterhub.com/random/dice-roller): Roll any dice type online — D4 through D100. - [Coin Flip](https://toolcenterhub.com/random/coin-flip): Flip a fair digital coin and get instant heads or tails. - [Random Number Generator](https://toolcenterhub.com/random/number-generator): Generate random numbers between any minimum and maximum. - [Team Generator](https://toolcenterhub.com/random/teams-generator): Split any list of names into randomly balanced teams. - [Countdown Timer](https://toolcenterhub.com/random/countdown-timer): Free countdown timer that runs entirely in your browser. - [Card Picker](https://toolcenterhub.com/random/cards-picker): Draw random cards from a standard 52-card deck. - [Bracket Generator](https://toolcenterhub.com/random/bracket-generator): Generate randomized single-elimination tournament brackets. ## Developer Tools - [Strong Password Generator](https://toolcenterhub.com/developer/password-generator): Generate cryptographically secure passwords up to 64 characters. - [IP Address Lookup](https://toolcenterhub.com/developer/ip-address-lookup): Find your public IP address, location, ISP, and ASN. - [SHA Hash Generator](https://toolcenterhub.com/developer/hash-generator): Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes. - [Base64 Encoder and Decoder](https://toolcenterhub.com/developer/base64-encoder-decoder): Encode text to Base64 or decode any Base64 string. - [JSON Formatter and Validator](https://toolcenterhub.com/developer/json-formatter): Format, validate, and minify JSON with syntax highlighting. - [QR Code Generator](https://toolcenterhub.com/developer/qr-code-generator): Generate QR codes for URLs, text, email, phone, or WiFi. - [URL Encoder and Decoder](https://toolcenterhub.com/developer/url-encode-decoder): Encode or decode percent-encoded URL strings instantly. - [UUID v4 Generator](https://toolcenterhub.com/developer/uuid-generator): Generate cryptographically random UUID v4 identifiers. - [Text Encryptor](https://toolcenterhub.com/developer/text-encrypt): Encrypt and decrypt text with a secret key in your browser. - [Test Data Generator](https://toolcenterhub.com/developer/fake-identity-generator): Generate fictional names and addresses for software testing. ## Document Tools - [Invoice Generator](https://toolcenterhub.com/documents/invoice-generator): Create professional invoices with line items and PDF export. - [Business Quote Generator](https://toolcenterhub.com/documents/quote-generator): Create professional business quotes and estimates. - [Privacy Policy Generator](https://toolcenterhub.com/documents/privacy-policy-generator): Generate a GDPR and CCPA compliant privacy policy. - [Terms of Service Generator](https://toolcenterhub.com/documents/tos-generator): Generate complete terms of service for any website or app. - [NDA Generator](https://toolcenterhub.com/documents/nda-generator): Create a non-disclosure agreement between two parties. - [Freelance Contract Generator](https://toolcenterhub.com/documents/contract-generator): Generate a freelance service contract with payment terms. - [Receipt Generator](https://toolcenterhub.com/documents/receipt-generator): Create professional business receipts with itemized lists. - [Disclaimer Generator](https://toolcenterhub.com/documents/disclaimer-generator): Generate a professional disclaimer for any website or blog. ## Health Tools - [BMI Calculator](https://toolcenterhub.com/health/bmi-calculator): Calculate your Body Mass Index with metric or imperial units. - [TDEE Calculator](https://toolcenterhub.com/health/tdee-calculator): Calculate your Total Daily Energy Expenditure. - [Calorie Calculator](https://toolcenterhub.com/health/calories-calculator): Calculate your daily calorie needs for any fitness goal. - [Macro Calculator](https://toolcenterhub.com/health/macros-calculator): Calculate your daily protein, carbs, and fat targets. - [Ideal Weight Calculator](https://toolcenterhub.com/health/ideal-weight-calculator): Find your healthy weight range using four established formulas. - [Body Fat Percentage Calculator](https://toolcenterhub.com/health/bodyfat-calculator): Estimate body fat percentage using the US Navy method. - [Sleep Cycle Calculator](https://toolcenterhub.com/health/sleep-cycle-calculator): Find the ideal bedtime or wake-up time by sleep cycle. - [Water Intake Calculator](https://toolcenterhub.com/health/water-intake-calculator): Calculate your daily hydration target based on weight and activity. - [Age Calculator](https://toolcenterhub.com/health/age-calculator): Calculate your exact age in years, months, weeks, and days. - [Pregnancy Due Date Calculator](https://toolcenterhub.com/health/pregnancy-due-date): Calculate your estimated due date from your last menstrual period. ## Creator ToolCenterHub is built and maintained by [Hassaan Rasheed](https://www.linkedin.com/in/hassaan-ur-rasheed/). ## About - [About ToolCenterHub](https://toolcenterhub.com/about): Learn about the project, its mission, and values. - [Contact](https://toolcenterhub.com/contact): Get in touch with the ToolCenterHub team. - [Privacy Policy](https://toolcenterhub.com/privacy-policy): How ToolCenterHub handles your data (spoiler: it doesn't collect any). - [Terms of Service](https://toolcenterhub.com/terms-of-service): Terms governing use of ToolCenterHub. - [Cookie Policy](https://toolcenterhub.com/cookie-policy): Information about cookies used on the site.