# Anytools.io

> Free, browser-based utility platform with 80 developer tools, design tools, calculators, and health & nutrition tools. No signup required, no server-side processing — all tools run entirely in the browser. Your data never leaves your machine.

Anytools.io is a single-destination website replacing the need to bookmark dozens of single-purpose utility sites. Everything is free, requires no account, and processes data locally using client-side JavaScript.

## Blog

- [Blog](https://anytools.io/blog/): Guides, tips and tutorials for all tools — updated daily with new articles.

## Developer Tools

- [JSON Formatter](https://anytools.io/dev/json-formatter): Format, validate, and explore JSON with syntax highlighting and collapsible tree view. Client-side only — no data sent to servers.
- [Base64 Encoder/Decoder](https://anytools.io/dev/base64): Encode or decode Base64 strings and files entirely in the browser.
- [URL Encoder/Decoder](https://anytools.io/dev/url-encoder): Encode and decode URLs and query strings.
- [Password Generator](https://anytools.io/dev/password-generator): Generate secure random passwords with configurable length, symbols, and character sets.
- [UUID Generator](https://anytools.io/dev/uuid-generator): Generate RFC 4122 UUIDs (v1, v4) in bulk.
- [Timestamp Converter](https://anytools.io/dev/timestamp): Convert between Unix timestamps and human-readable dates. Supports seconds and milliseconds.
- [Word Counter](https://anytools.io/dev/word-counter): Count words, characters, sentences, and paragraphs in any text.
- [Color Converter](https://anytools.io/dev/color-converter): Convert between HEX, RGB, HSL, HSB, and CMYK color formats.
- [Lorem Ipsum Generator](https://anytools.io/dev/lorem-ipsum): Generate placeholder text in paragraphs, sentences, or words.
- [Markdown Preview](https://anytools.io/dev/markdown-preview): Live Markdown editor with real-time HTML preview.
- [Regex Tester](https://anytools.io/dev/regex-tester): Test regular expressions with live match highlighting and capture group display.
- [HTML Encoder/Decoder](https://anytools.io/dev/html-encoder): Encode and decode HTML entities.
- [JWT Decoder](https://anytools.io/dev/jwt-decoder): Decode JSON Web Tokens and inspect header, payload, and expiry. Token never leaves the browser.
- [SHA Checksum Generator](https://anytools.io/dev/sha-checksum): Generate SHA-1, SHA-256, SHA-384, and SHA-512 checksums from text or files.
- [Code Minifier](https://anytools.io/dev/minifier): Minify JavaScript and CSS code.
- [Cron Builder](https://anytools.io/dev/cron-builder): Build and explain cron expressions with a visual interface.
- [Case Converter](https://anytools.io/dev/case-converter): Convert text between camelCase, PascalCase, snake_case, kebab-case, UPPER_CASE, and more.
- [JSON to CSV Converter](https://anytools.io/dev/json-csv): Convert JSON arrays to CSV and back.
- [XML Formatter](https://anytools.io/dev/xml-formatter): Format and validate XML documents.
- [Base Converter](https://anytools.io/dev/base-converter): Convert numbers between binary, octal, decimal, and hexadecimal.
- [QR Code Generator](https://anytools.io/dev/qr-generator): Generate QR codes from text, URLs, or any string. Download as PNG or SVG.
- [Text Diff Checker](https://anytools.io/dev/text-diff): Compare two text blocks and highlight differences line by line.
- [YAML to JSON Converter](https://anytools.io/dev/yaml-json): Convert between YAML and JSON formats.
- [SQL Formatter](https://anytools.io/dev/sql-formatter): Format and beautify SQL queries.
- [HTML to Markdown Converter](https://anytools.io/dev/html-markdown): Convert HTML to Markdown and vice versa.
- [Code Screenshot](https://anytools.io/dev/code-screenshot): Generate beautiful syntax-highlighted code screenshots for sharing.
- [Timezone Converter](https://anytools.io/dev/timezone-converter): Convert times between any world timezones with DST awareness.

## Design Tools

- [Color Palette Generator](https://anytools.io/design/color-palette): Generate harmonious color palettes from a base color. Export as HEX, CSS variables, or Tailwind config.
- [Gradient Generator](https://anytools.io/design/gradient-generator): Create CSS linear, radial, and conic gradients with a live preview.
- [Contrast Checker](https://anytools.io/design/contrast-checker): Check WCAG AA/AAA color contrast ratios for accessibility compliance.
- [Color Blindness Simulator](https://anytools.io/design/color-blindness): Preview how colors appear to people with various types of color blindness.
- [Tints & Shades Generator](https://anytools.io/design/tints-shades): Generate tints and shades for any color — useful for design system color scales.
- [Type Scale Generator](https://anytools.io/design/type-scale): Build a modular typographic scale with configurable base size and ratio.
- [Line Height Calculator](https://anytools.io/design/line-height): Calculate optimal line heights for readable typography.
- [Font Pairing Tool](https://anytools.io/design/font-pairing): Preview and compare Google Font combinations.
- [Aspect Ratio Calculator](https://anytools.io/design/aspect-ratio): Calculate and maintain aspect ratios for images and video embeds.
- [Spacing Scale Generator](https://anytools.io/design/spacing-scale): Generate consistent spacing scales for design systems.
- [Box Shadow Generator](https://anytools.io/design/box-shadow): Create CSS box shadows visually with live preview and copy-to-clipboard.
- [SVG Viewer & Optimizer](https://anytools.io/design/svg-viewer): View, preview, and optimize SVG files.
- [Favicon Generator](https://anytools.io/design/favicon-generator): Generate favicons from text, emoji, or images. Download in all required sizes.
- [Image Color Extractor](https://anytools.io/design/image-colors): Extract dominant colors and palette from any image. Runs locally.
- [Placeholder Image Generator](https://anytools.io/design/placeholder-image): Generate placeholder images at custom sizes and colors.
- [Clip Path Generator](https://anytools.io/design/clip-path): Create CSS clip-path shapes visually.
- [CSS Animation Generator](https://anytools.io/design/css-animation): Build CSS keyframe animations with a visual editor.
- [Flexbox Generator](https://anytools.io/design/flexbox-generator): Build and visualize CSS Flexbox layouts interactively.
- [CSS Grid Generator](https://anytools.io/design/grid-generator): Create CSS Grid layouts visually and export the code.
- [Border Radius Generator](https://anytools.io/design/border-radius): Generate complex CSS border-radius values visually.
- [Glassmorphism Generator](https://anytools.io/design/glassmorphism): Create glassmorphism-style CSS effects with live preview.
- [Text Shadow Generator](https://anytools.io/design/text-shadow): Generate CSS text-shadow values visually.
- [CSS Loader Generator](https://anytools.io/design/loader-generator): Create pure CSS loading spinners and animations.
- [Blob Generator](https://anytools.io/design/blob-generator): Generate organic blob shapes as SVG or CSS clip-paths.

## Calculators

- [Compound Interest Calculator](https://anytools.io/calc/compound-interest): Calculate compound interest with configurable principal, rate, frequency, and time period.
- [Loan Calculator](https://anytools.io/calc/loan-calculator): Calculate monthly payments, total interest, and amortization schedules.
- [ROI Calculator](https://anytools.io/calc/roi-calculator): Calculate return on investment and break-even points.
- [Tip Calculator](https://anytools.io/calc/tip-calculator): Split bills and calculate tips for any group size.
- [BMI Calculator](https://anytools.io/calc/bmi-calculator): Calculate Body Mass Index with metric and imperial units.
- [Age Calculator](https://anytools.io/calc/age-calculator): Calculate exact age in years, months, and days from a birthdate.
- [GPA Calculator](https://anytools.io/calc/gpa-calculator): Calculate weighted and unweighted GPA from course grades.
- [Percentage Calculator](https://anytools.io/calc/percentage-calc): Calculate percentages, percentage changes, and percentage of totals.
- [Discount Calculator](https://anytools.io/calc/discount-calc): Calculate sale prices and savings from discount percentages.
- [Fuel Cost Calculator](https://anytools.io/calc/fuel-cost): Calculate trip fuel costs with configurable distance, fuel efficiency, and price.
- [Unit Converter](https://anytools.io/calc/unit-converter): Convert between units of length, weight, temperature, volume, speed, and data storage.
- [Date Calculator](https://anytools.io/calc/date-calculator): Calculate days between dates, add or subtract days, and find business days.
- [Mortgage Calculator](https://anytools.io/calc/mortgage-calculator): Calculate monthly mortgage payments with principal, interest, taxes, and amortization.
- [Salary Calculator](https://anytools.io/calc/salary-calculator): Convert salary between hourly, weekly, biweekly, monthly, and annual amounts.
- [Electricity Cost Calculator](https://anytools.io/calc/electricity-cost): Calculate electricity costs for any appliance based on wattage, usage, and rate.

## Health & Nutrition Tools

- [TDEE Calculator](https://anytools.io/health/tdee-calculator): Calculate Total Daily Energy Expenditure and BMR using the Mifflin-St Jeor equation. Get calorie targets for weight loss, maintenance, and gain.
- [Macro Calculator](https://anytools.io/health/macro-calculator): Calculate daily protein, carbs, and fat targets based on calorie goal and body weight.
- [Body Fat Calculator](https://anytools.io/health/body-fat-calculator): Estimate body fat percentage from body measurements using the US Navy method.
- [Calorie Deficit Calculator](https://anytools.io/health/calorie-deficit): Plan weight loss with a safe daily calorie deficit and realistic timeline.
- [Ideal Body Weight Calculator](https://anytools.io/health/ideal-weight): Find your ideal weight range using Devine, Robinson, Miller, and Hamwi formulas.
- [Water Intake Calculator](https://anytools.io/health/water-intake): Calculate daily hydration needs based on weight, activity level, and climate.
- [Protein Intake Calculator](https://anytools.io/health/protein-calculator): Calculate optimal daily protein intake based on body weight and fitness goals.
- [Heart Rate Zone Calculator](https://anytools.io/health/heart-rate-zones): Find your 5 training heart rate zones using the Karvonen method.
- [One Rep Max Calculator](https://anytools.io/health/one-rep-max): Estimate your one-rep max from submaximal reps using Epley, Brzycki, and Lombardi formulas.
- [Sleep Calculator](https://anytools.io/health/sleep-calculator): Calculate optimal bedtime and wake time based on 90-minute sleep cycles.
- [BAC Calculator](https://anytools.io/health/bac-calculator): Estimate blood alcohol content from drinks consumed using the Widmark formula.
- [Pregnancy Due Date Calculator](https://anytools.io/health/due-date-calculator): Estimate delivery date from last menstrual period or conception date using Naegele's rule.
- [Pace Calculator](https://anytools.io/health/pace-calculator): Calculate running pace, speed, distance, or finish time with race time projections.
- [VO2 Max Estimator](https://anytools.io/health/vo2-max): Estimate aerobic fitness level from Cooper 12-minute run test or Rockport walk test.

## Privacy & Technical Notes

All tools on Anytools.io process data entirely in the browser using client-side JavaScript. No user input is transmitted to any server. The site has no user accounts, no login system, no analytics tracking, and no cookies beyond site functionality. Users can verify this by opening browser DevTools and observing zero outbound network requests during tool use.

The platform is free with no usage limits, no paywalls, and no freemium tiers.