Search Free Online Tools — UtilixVerse

Calculate your Body Mass Index (BMI) instantly using metric or imperial units. Free online BMI calculator with WHO/CDC classification.

Log BMI readings over time to see the trend behind single snapshots — weight change shows up as a line, not a number.

Compare your BMI change rate against WHO/CDC guidelines to see whether a shift is steady, fast, or worth a professional’s opinion.

Calculate your Basal Metabolic Rate — calories burned at rest.

Calculate Total Daily Energy Expenditure based on activity level.

Estimate your body fat percentage using Navy method.

Calculate your lean body mass excluding fat weight.

Calculate your ideal weight and healthy weight range using WHO BMI guidelines and medical formulas (Devine, Hamwi, Robinson, Miller).

Calculate your recommended daily water intake in liters or ounces based on weight and activity level. Free hydration calculator.

Calculate daily calories needed for weight loss, maintenance, or muscle gain. Free calorie calculator with BMR, TDEE, and macro breakdown.

Calculate optimal protein, carbohydrate, and fat ratios for weight loss, muscle gain, or maintenance. Free macro calculator.

Calculate target heart rate zones for fat burn, cardio, and peak performance. Free heart rate zone calculator with Karvonen formula.

Format, validate, and beautify JSON data instantly. Free online JSON formatter with syntax highlighting, error detection, and minification.

Validate JSON syntax and detect errors instantly. Free JSON validator with line-number error reporting and syntax checking.

Compare two JSON objects and highlight differences.

Pretty-print and validate XML with configurable indentation and inline error pointing — turn a minified feed into a readable tree.

Format, validate, and lint YAML — catch bad indentation, duplicate keys, and type mistakes before a config file bites you.

Decode and inspect JWT tokens instantly. Free JWT decoder showing header, payload, signature, and expiry.

Inspect a JWT’s header, payload, and signature with claim details like exp, iat, and issuer — decode and validate it without a server.

Encode and decode Base64 strings and files instantly. Free Base64 encoder/decoder for text, images, and binary data.

Encode and decode URLs and query parameters. Free URL encoder/decoder for percent encoding and special characters.

Generate UUID v4 identifiers in bulk. Free UUID generator with hyphenated, plain hex, and CSV output formats.

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text or files. Free online hash generator with verification and file checksum support.

Test and debug regular expressions with live matching. Free regex tester with capture groups, flags, and pattern templates.

Convert between Unix epoch seconds or milliseconds and human-readable dates in your timezone, with ready-to-paste format presets.

Generate placeholder text for designs and prototypes. Free lorem ipsum generator with customizable word count and paragraphs.

Convert between HEX, RGB, HSL, and CMYK color formats instantly. Free color converter with live preview and color picker.

Look up any HTTP status code as you parse an API response — the canonical reason phrase and when you are actually going to see it.

Resolve the correct MIME type for any file extension and reverse-lookup which extensions a MIME type maps back to.

A working reference for the most common request and response headers — what each does, its syntax, and the security gotchas (CSP, HSTS, CORP).

Count words, characters, sentences, paragraphs, and lines instantly. Free word counter with reading time and speaking time.

Remove duplicate lines from text instantly. Free duplicate line remover with sort option and count display.

Remove empty and blank lines from text. Free empty line remover with custom line count threshold.

Sort lines alphabetically, numerically, or by length. Free line sorter with ascending/descending and random order.

Reverse text, words, or characters instantly. Free text reverser for creative writing and testing.

Convert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case, and kebab-case instantly.

Generate URL-friendly slugs from text. Free slug generator with custom separators and lowercase conversion.

Generate stylized Unicode text for social media.

Convert text to Unicode font styles for social media. Free Unicode font generator with 100+ styles.

Write and preview Markdown with a split-pane editor, live rendering, formatting toolbar, and HTML export.

Escape and unescape HTML entities.

Clean and optimize URL slugs for SEO. Free slug cleaner removing special characters and spaces.

Compare two texts side-by-side with line-by-line diff and word-by-word similarity analysis. Free text comparison tool.

Find and replace text with regex support. Free find and replace tool with case-insensitive mode and live highlighting.

Generate random words, sentences, or paragraphs for placeholder content. Free random text generator for mockups and testing.

Compare two texts — word-by-word similarity analysis plus a classic line-by-line diff checker, with paragraph & sentence breakdowns. PDF & image upload coming soon.

Compress images in-browser without upload. Free image compressor supporting JPEG, PNG, and WebP with quality control.

Resize images by pixels or percentage in the browser. Free image resizer with batch processing and quality control.

Crop images with custom dimensions in the browser. Free image cropper with aspect ratio presets and drag-to-crop.

Rotate images by any angle in the browser. Free image rotator with 90-degree quick rotation and custom angles.

Flip images horizontally or vertically in the browser. Free flip image tool for mirroring and orientation correction.

Convert between PNG and JPG formats instantly. Free image format converter with quality settings and transparency handling.

Convert JPG, PNG, and WebP images to PDF in-browser.

Convert single images or whole batches between PNG and WebP with quality and lossless options — WebP is typically 25–35% smaller than PNG.

Convert images to AVIF format in the browser. Free AVIF converter with quality settings and batch support.

Strip EXIF and GPS metadata from photos before sharing — removes camera, location, and timestamp data that could identify you.

Generate QR codes from text, URLs, or data instantly. Free QR code generator with custom colors and download in PNG/SVG.

Scan QR codes using your camera.

Generate barcodes (Code128, EAN, UPC) from text in the browser. Free barcode generator with PNG download.

Extract dominant color palettes from images. Free color palette generator for design inspiration and brand matching.

Get the top dominant colors with their exact HEX values and share of the image — for brand-kit matching and design pulls.

Hover and click any pixel or patch of an image to read its exact HEX, RGB, and HSL values with a magnifier.

Generate favicons from any image in the browser. Free favicon generator with ICO, PNG, and manifest output.

Create sprite sheets from multiple images in the browser. Free sprite sheet generator for game development.

Turn a photo into pixel art at 8–64 pixels wide with dithering and palette options for a genuine retro-game look.

Arrange multiple images into a grid or collage with gap, padding, and background controls, then export the whole layout as one file.

Wrap a screenshot in a browser or device frame with a gradient background and publish-ready shadow — for READMEs, docs, and showcase posts.

Generate CSS linear, radial, and conic gradients with live preview and editable color stops. Free online CSS gradient generator with copy-ready code for backgrounds and UI.

Create beautiful mesh gradients for backgrounds with a multi-point color grid. Free mesh gradient generator with live preview, randomize, and copy-ready CSS.

Generate random organic blob shapes as SVG with seed, complexity, and color controls. Free SVG blob generator for backgrounds, masks, and illustrations.

Generate wave dividers for web sections as scalable SVG. Free SVG wave generator with multi-layer waves, amplitude, frequency, and color controls.

Generate CSS keyframe animations visually — fade, slide, bounce, pulse, shake, spin, and more. Free CSS animation generator with live preview and copy-ready code.

Generate glassmorphism CSS effects with blur, transparency, and border controls. Free glassmorphism generator with live preview and ready-to-paste frosted glass CSS.

Generate neumorphism (soft UI) CSS styles with light source, distance, and intensity controls. Free neumorphism generator with convex, concave, and flat previews.

Generate CSS box shadows with live preview, multiple layers, and inset support. Free box shadow generator with presets and copy-ready CSS for cards and buttons.

Generate complex CSS border radius values with per-corner controls and organic blob presets. Free border radius generator with live preview and CSS output.

Interactive CSS Grid layout builder. Experiment with columns, rows, gaps, and alignment on a live grid and copy the generated CSS.

Interactive Flexbox layout builder. Tune direction, wrap, justify-content, and align-items on a live demo and copy the generated CSS.

Optimize SVG files by removing comments, redundant attributes, and excess precision. Free SVG minifier with size comparison and pretty-print option.

Preview how your links appear on social media with Open Graph tags. Free Open Graph preview for Facebook, LinkedIn, and X link cards.

Preview link cards for Twitter, Facebook, LinkedIn, WhatsApp, Telegram, and Slack. Free social media preview tool that simulates shared link cards.

Preview your site at multiple screen sizes — iPhone, iPad, laptop, and desktop. Free responsive layout preview inside a scaled iframe.

Calculate CIDR ranges, subnet masks, and IP blocks. Free CIDR calculator for network planning and IP address management.

Calculate subnets from CIDR notation. Free subnet calculator with host range, broadcast, and mask conversion.

Convert between binary, decimal, hexadecimal, and octal number systems. Free binary converter with step-by-step explanation.

Convert between hex, decimal, binary, and octal with group separators and a byte breakdown — for inspecting memory dumps and binary protocols.

Convert decimal values to binary, hex, and octal with step-by-step division and subtraction methods for homework and interview prep.

Generate realistic random MAC addresses — including locally administered and unicast variants — for test fleets, lab VMs, and fixture data.

Generate random IPv4 and IPv6 addresses, optionally from private or reserved-lean pools, for config samples, fixtures, and lab setups.

Classify any IP — public, private, loopback, link-local, multicast, or reserved — for both IPv4 classes and IPv6 special ranges.

Searchable reference of common TCP/UDP ports and their services — 20/21/22/25/53/80/443/3306/5432 — with the default transport protocol.

Every HTTP status code from 100 to 511, grouped by class, with the reason phrase and a one-line note on when you will actually see it.

Look up the MIME type for any file extension and reverse-lookup which extensions map back — across text, image, audio, video, and application types.

Break any User-Agent string into browser, version, engine, OS, and device type —including bots and crawler signatures — without a server round-trip.

Split any URL into protocol, hostname, port, path, decoded query parameters, and fragment, with each component listed and copyable.

Generate strong random passwords with customizable length and character types. Free password generator with entropy calculation.

Check password strength and estimate crack time. Free password strength tester with entropy calculation and security tips.

Generate diceware passphrases using the EFF word list. Free diceware password generator with customizable word count.

Generate cryptographically secure random numbers and strings. Free secure random generator using Web Crypto API.

Encrypt text using AES-256-GCM encryption. Free AES encryption tool with password-based key derivation.

Decrypt AES-256-GCM encrypted text. Free AES decryption tool with password-based key derivation.

Generate RSA key pairs for encryption and decryption. Free RSA key generator with PEM export format.

Generate SHA-256 and SHA-512 hashes using the Web Crypto API. Free SHA hash generator for message integrity.

Generate HMAC signatures using SHA-256, SHA-512, and MD5. Free HMAC generator for API authentication and message verification.

Create encrypted notes with password protection. Free secure notes with AES-256 encryption for sensitive information.

Read EXIF and embedded metadata from images and files — camera model, GPS coordinates, timestamp, and software — so you know what you are sharing.

Strip EXIF and embedded metadata from images and documents before you upload or share them anywhere — GPS, camera, and timestamp data included.

Password-encrypt whole files with AES-256 in your browser and export them as .uv encrypted files — nothing is uploaded, no key is stored.

Decrypt .uv encrypted files locally with the same password — no server involvement and no key escrow, so the file only ever exists on your device.

See the exact resolution, pixel density, and device pixel ratio your device actually renders at — useful when CSS pixels and physical pixels disagree across phones and monitors.

Read the precise browser name, version, engine, platform, and language — everything a bug report usually asks for, in one place.

Check the live viewport width, height, scroll position, and device pixel ratio of the window you are reading this in, including after rotation.

Report screen resolution, color depth, and current orientation — with live updates on rotation for responsive-breakpoint testing.

Visualize how a notch or home indicator overlaps the viewport and read off the safe-area insets your CSS environment() variables should use.

Open your webcam, preview the feed, and read off the resolutions and frame rates it supports — a five-second pre-call equipment check.

Check mic input level live, record a short test clip, and play it back so you can confirm the correct device and a usable signal.

Play a low, mid, and high test tone plus a voice sample to verify left/right channels and output volume on your current audio device.

Verify clipboard read and write access on this browser, triggering the permission prompt and confirming exactly what landed on the clipboard.

List every cookie set for this origin with its value, expiry, domain, and flags — a quick way to audit what a site drops on you.

Inspect localStorage, sessionStorage, and IndexedDB for the current origin, filter or delete keys, and debug storage-related bugs.

Validate a manifest.json against the web app manifest spec — required fields, icon sizing, and display modes — before shipping a PWA.

Detect support for dozens of browser APIs — WebGL, WebRTC, service workers, sensors, wake lock, and more — on this exact browser.

Calculate attendance percentage and required classes to meet minimum. Free attendance calculator with percentage tracking.

Calculate percentages, percentage changes, and percentage differences. Free percentage calculator with step-by-step solution.

Calculate CGPA from grades across semesters. Free CGPA calculator with grade conversion and GPA to percentage conversion.

Calculate GPA from course grades and credits. Free GPA calculator with 4.0 and custom scales.

Calculate final grade needed on exams. Free grade calculator with weighted category support.

Track study sessions with a customizable timer. Free study timer with session logging and break reminders.

Pomodoro technique timer with customizable work and break intervals. Free Pomodoro timer with session tracking.

Create and study digital flashcards for any subject. Free flashcard creator with spaced repetition and shuffle.

Drop in a question bank and have the tool select N random questions for you — reshuffle on demand and export the set for quick mock tests and drills.

Plan your semester schedule with course blocks and time management. Free semester planner for students.

Calculate MD5, SHA-256 file checksums for integrity verification. Free file checksum generator with drag-and-drop support.

View CSV files in a sortable table format. Free CSV viewer with column sorting, filtering, search, and data visualization.

Convert CSV data to JSON format instantly. Free CSV to JSON converter with delimiter detection and formatted output.

Convert JSON data to CSV format instantly. Free JSON to CSV converter with nested object flattening.

Clean and sanitize filenames for web and operating systems. Free filename cleaner removing special characters.

Find duplicate filenames in a list. Free duplicate filename finder for file organization.

Preview bulk file renaming with patterns and rules. Free bulk rename tool for batch file organization.

Visualize folder structures as a tree diagram. Free folder tree visualizer for project organization.

Preview contents of ZIP files without extracting. Free ZIP file viewer showing file list and sizes.

View file metadata including size, type, and dates. Free file metadata viewer for detailed file information.

Trim and cut audio files in the browser. Free audio trimmer for MP3, WAV, OGG, and WebM with waveform preview.

Convert WAV files to MP3 in the browser. Free WAV to MP3 converter with bitrate and sample rate control — 100% offline and private.

Raise the gain of an audio file by up to +20 dB with peak limiting to avoid clipping — for quiet recordings and low-volume exports.

Play a pure sine, square, or triangle wave at any frequency up to 20 kHz — a quick, honest way to test speakers, headphones, and hearing edges.

Generate white noise, pink noise, and brown noise for sleep and focus. Free white noise generator with volume control.

Generate precise test frequencies in Hz and sweep between two values to probe speakers, find resonant frequencies, or check system response.

Stream your microphone or an uploaded track through a real-time waveform and frequency-bar visualizer — useful for demos and speaker checks.

Digital metronome with adjustable BPM and time signatures. Free online metronome with tap tempo and sub-millisecond precision.

Trim video files in the browser without upload. Free video trimmer for MP4, WebM, and MOV with frame-accurate cutting.

Create animated GIFs from videos in the browser. Free GIF creator with FPS control, dimension settings, and instant preview.

Pull a clean thumbnail frame at any timestamp from an MP4, WebM, or MOV — for video previews, blog hero images, and social post covers.

Extract a batch of frames at regular intervals or as a contact sheet — turn a clip into stills for storyboarding, previews, and analysis.

Speed videos up to 4× or down to 0.25× with frame-interpolation options for smoother slow motion — all processed locally, nothing uploaded.

Step through an animated GIF frame by frame with per-frame timing — check order, palette, and durations before you optimize or edit it.

Generate wallpapers from gradients, patterns, and noise at your exact screen resolution, and export them as JPG or WebP for your phone or desktop.

Draw pixel art on an adjustable grid canvas with a palette and mirror mode, then export it as PNG scaled up without blur.

Draw and create SVG illustrations in the browser. Free SVG drawing tool with pen, shapes, text, and SVG export.

Write CSS in one pane and preview the result live in the other — experiment with selectors, transforms, and media queries without a build step.

Generate seamless noise and grain textures with adjustable intensity and scale — for film grain, paper textures, and background depth.

Print or download graph paper in standard and custom grid sizes — square, isometric, and log scales — as a clean PDF for plotting and planning.

Generate isometric grid backgrounds as PNG or reusable CSS patterns for mockups, art direction, and diagram paper.

Download or print dot-grid paper in your preferred spacing and dot color for bullet journaling, note-taking, and technical sketching.

Simulate protanopia, deuteranopia, and tritanopia on any image or color, so you can check contrast and legibility for color-vision-deficient users.

Generate balanced random palettes with contrast-safe pairings — regenerate until one clicks, then copy the HEX values.

Spin a wheel to make random decisions. Free decision wheel with custom options, weighted slices, and animation.

Flip a virtual coin with an honest 50/50 roll and a running history — settle the call without hunting for a coin.

Roll virtual dice — d4, d6, d8, d10, d12, d20. Free dice roller with multiple dice, custom sides, and roll history.

Split a name list into balanced random teams of any size with alternating assignment, and copy the groups out when you are done.

Draw names at random from a list with no-repeats and full draw history — for classroom picks, giveaway winners, and rotation scheduling.

Generate a single-elimination bracket from any 2–64 participants, seed the field, and print or share the fixture tree.

Generate unique bingo cards from your own words or a number range, and export a full printable set for game night.

Draw a random challenge by category — fun, fitness, creative, or social — for parties, streaks, and icebreakers.

Roll random emoji combos with a punch — a few rolls for reactions, captions, and content ideas, or just because.

Customizable weighted spin wheel — tune slice size and odds for every option.

Play Rock Paper Scissors online with a friend or against the computer. Free RPS game with room codes for multiplayer.

Mash-to-run stickman race — race a friend online with a room code or go head-to-head on one keyboard.

Two snakes, one arena — eat, grow, and outlive your rival in a local or online battle to the top score.

A falling-block puzzle with unpredictable twist events — play solo or race a friend online to 20 lines.

Convert between any units across 18 dimensions — length, weight, temperature, area, volume, speed, time, data, electric, force, fuel, pressure, frequency, illuminance, power, torque, angle, and custom ratios — all in one place. Free unit converter with a dimension switcher, swap button, and copy-ready results.

Calculate Equated Monthly Installment (EMI) for home, car, or personal loans. Free EMI calculator with amortization schedule.

Plan Systematic Investment Returns with step-up SIP and inflation adjustment. Free SIP calculator with wealth projection.

Estimate income tax under old and new Indian tax regimes. Free tax calculator with slab-wise breakdown and effective tax rate.

Calculate GST inclusive and exclusive prices with CGST, SGST, and IGST breakdowns. Free GST calculator for all Indian tax slabs.

Calculate mortgage payments with amortization schedule. Free mortgage calculator comparing fixed vs adjustable rates.

Compress PDF files to a target file size in KB right in your browser. Free PDF compressor with preset and custom KB targets — quality is traded only as much as needed to hit your size goal.

Merge multiple PDF files into one combined document in the browser. Free PDF merger with drag-to-reorder pages.

Split PDF files by page range or extract every page as a separate file. Free PDF splitter with live page preview.

Preview every page of your PDF and remove the pages you don’t need. Free PDF page remover with live thumbnails — 100% in-browser.

Extract a selection of pages from a PDF into a new file. Free PDF page extractor with range and picker selection.

Reorder, rotate, and delete pages in your PDF with a visual page organizer. Free PDF organizer in the browser.

Rotate PDF pages by 90, 180, or 270 degrees. Free PDF rotator with per-page and whole-document rotation.

Add page numbers to every page of a PDF with position and style options. Free PDF page number tool.

Add text or image watermarks to PDF pages. Free PDF watermark tool with opacity and position controls.

Crop PDF pages to custom margins and dimensions. Free PDF cropper with live preview.

Password-protect and encrypt PDF files. Free PDF protection with user and owner passwords.

Remove password protection from PDF files. Free PDF unlocker for owner-password PDFs.

Add signatures and signature fields to PDF documents in the browser. Free PDF signing tool.

Permanently redact sensitive text and areas from PDF files. Free PDF redaction tool for privacy.

Fill in PDF forms with text, checkboxes, and dropdowns. Free PDF form filler that works in the browser.

Compare two PDF documents side by side and spot the differences. Free PDF comparison tool.

Optimize PDF files by removing unused objects, duplicate resources, and metadata. Free PDF optimizer that keeps quality.

Scan documents using your device camera and save them as PDF pages. Free scan to PDF in the browser.

Extract and recognize text from scanned PDFs using in-browser OCR. Free PDF OCR with text output.

Convert PDF pages to JPG images. Free PDF to JPG converter with resolution and quality control.

Convert PDF documents to clean Markdown text. Free PDF to Markdown converter for writers and developers.

Convert JPG, PNG, and WebP images into a PDF document. Free JPG to PDF converter with page size options.

Convert HTML code or web pages to a PDF document. Free HTML to PDF converter in the browser.