# Toolwell
> Toolwell is a collection of 100 free online tools that run entirely in your browser — converters, text tools, generators, formatters, and calculators. No sign-up, no login, no uploads. It also publishes practical guides for developers, designers, and students.
> Official website: https://toolwell.vercel.app/
## Converters Tools

- [PX to REM Converter](https://toolwell.vercel.app/tools/px-to-rem-converter/): Convert pixels to REM units instantly with a customizable root font size.
- [REM to PX Converter](https://toolwell.vercel.app/tools/rem-to-px-converter/): Convert REM units back to pixels using your preferred root font size.
- [RGB to HEX Converter](https://toolwell.vercel.app/tools/rgb-to-hex-converter/): Turn RGB color values into hex codes instantly for CSS and design work.
- [HEX to RGB Converter](https://toolwell.vercel.app/tools/hex-to-rgb-converter/): Convert hex color codes to RGB values in one click, with live color preview.
- [Color Code Converter](https://toolwell.vercel.app/tools/color-code-converter/): Convert between HEX, RGB, HSL, and CSS color formats with a live swatch preview.
- [Length Converter](https://toolwell.vercel.app/tools/length-converter/): Convert length units between meters, kilometers, miles, feet, inches, and more.
- [Weight Converter](https://toolwell.vercel.app/tools/weight-converter/): Convert weight between kilograms, pounds, grams, ounces, stones, and tons.
- [Temperature Converter](https://toolwell.vercel.app/tools/temperature-converter/): Convert temperature between Celsius, Fahrenheit, and Kelvin instantly.
- [Speed Converter](https://toolwell.vercel.app/tools/speed-converter/): Convert speed between km/h, mph, m/s, knots, and feet per second.
- [Time Zone Converter](https://toolwell.vercel.app/tools/time-zone-converter/): Convert a date and time between time zones and see UTC offsets side by side.
- [Currency Converter](https://toolwell.vercel.app/tools/currency-converter/): Quick currency conversion between major world currencies with editable rates.
- [Base64 Encoder / Decoder](https://toolwell.vercel.app/tools/base64-encoder-decoder/): Encode text to Base64 or decode Base64 back to readable text instantly.
- [URL Encoder / Decoder](https://toolwell.vercel.app/tools/url-encoder-decoder/): Percent-encode or decode URLs and query strings safely in your browser.
- [Case Converter](https://toolwell.vercel.app/tools/case-converter/): Convert text between upper case, lower case, title case, and sentence case.
- [Binary to Text](https://toolwell.vercel.app/tools/binary-to-text/): Decode binary code into readable text instantly, byte by byte.
- [Text to Binary](https://toolwell.vercel.app/tools/text-to-binary/): Convert any text into binary code with a single click.
- [Markdown to HTML](https://toolwell.vercel.app/tools/markdown-to-html/): Convert Markdown into clean HTML with a live preview pane.
- [HTML to Markdown](https://toolwell.vercel.app/tools/html-to-markdown/): Convert HTML into readable Markdown for docs, README files, and notes.
- [Image Dimension Scaler](https://toolwell.vercel.app/tools/image-dimension-scaler/): Scale image dimensions proportionally from one known size to a target width or height.
- [File Size Converter](https://toolwell.vercel.app/tools/file-size-converter/): Convert file sizes between bytes, KB, MB, GB, and TB with precise decimal results.

## Text Tools Tools

- [Camel Case Converter](https://toolwell.vercel.app/tools/camel-case-converter/): Convert text between camelCase, PascalCase, snake_case, and kebab-case.
- [Word Counter](https://toolwell.vercel.app/tools/word-counter/): Count words, characters, sentences, and paragraphs as you type in real time.
- [Character Counter](https://toolwell.vercel.app/tools/character-counter/): Count characters with and without spaces, plus word count, in real time.
- [Line Counter](https://toolwell.vercel.app/tools/line-counter/): Count lines in any text, including blank and non-empty line breakdowns.
- [Paragraph Counter](https://toolwell.vercel.app/tools/paragraph-counter/): Count paragraphs, sentences, and average paragraph length in your text.
- [Remove Duplicate Lines](https://toolwell.vercel.app/tools/remove-duplicate-lines/): Remove duplicate lines from any text list and see how many were removed.
- [Sort Lines Alphabetically](https://toolwell.vercel.app/tools/sort-lines-alphabetically/): Sort any list of lines alphabetically, in ascending or descending order.
- [Text Cleaner](https://toolwell.vercel.app/tools/text-cleaner/): Clean up pasted text: trim lines, collapse whitespace, and fix spacing issues.
- [Find and Replace](https://toolwell.vercel.app/tools/find-and-replace/): Find and replace text with case-sensitive and all-occurrence options.
- [Strip HTML Tags](https://toolwell.vercel.app/tools/strip-html-tags/): Remove all HTML tags from text while keeping the visible content intact.
- [Slugify Generator](https://toolwell.vercel.app/tools/slugify-generator/): Turn any title or phrase into a clean, URL-friendly slug instantly.
- [String Reverse](https://toolwell.vercel.app/tools/string-reverse/): Reverse any string, word by word or character by character, instantly.
- [Word Frequency Counter](https://toolwell.vercel.app/tools/word-frequency-counter/): Count how often each word appears in your text, sorted by frequency.
- [Text Diff Checker](https://toolwell.vercel.app/tools/text-diff-checker/): Compare two texts side by side and highlight added, removed, and changed lines.
- [Lorem Ipsum Generator](https://toolwell.vercel.app/tools/lorem-ipsum-generator/): Generate placeholder lorem ipsum text by paragraphs, sentences, or words.
- [Text Wrap Utility](https://toolwell.vercel.app/tools/text-wrap-utility/): Wrap text at a custom character width and control line endings.
- [Whitespace Remover](https://toolwell.vercel.app/tools/whitespace-remover/): Remove extra spaces, tabs, and newlines from your text in one click.
- [Regex Matcher](https://toolwell.vercel.app/tools/regex-matcher/): Test regular expressions against your text and see every match highlighted live.
- [Count Syllables](https://toolwell.vercel.app/tools/count-syllables/): Count syllables per word and per line to check rhythm and readability.
- [Readability Score Calculator](https://toolwell.vercel.app/tools/readability-score-calculator/): Measure Flesch Reading Ease and grade level of any English text instantly.

## Generators Tools

- [Strong Password Generator](https://toolwell.vercel.app/tools/strong-password-generator/): Generate cryptographically strong random passwords with custom options.
- [UUID v4 Generator](https://toolwell.vercel.app/tools/uuid-v4-generator/): Generate random RFC 4122 version 4 UUIDs in bulk with one click.
- [Random Number Generator](https://toolwell.vercel.app/tools/random-number-generator/): Generate random integers between any minimum and maximum, one or many at once.
- [Hash Generator (SHA-256, MD5)](https://toolwell.vercel.app/tools/hash-generator/): Generate SHA-256 and MD5 hashes of any text using the browser Web Crypto API.
- [GUID Generator](https://toolwell.vercel.app/tools/guid-generator/): Generate Globally Unique Identifiers in different formatting styles.
- [Dummy Text Generator](https://toolwell.vercel.app/tools/dummy-text-generator/): Generate realistic filler text with customizable length and paragraph count.
- [Random Color Generator](https://toolwell.vercel.app/tools/random-color-generator/): Generate random colors with hex codes and a palette you can copy.
- [Cron Expression Generator](https://toolwell.vercel.app/tools/cron-expression-generator/): Build cron expressions from visual dropdowns with instant human-readable preview.
- [QR Code Generator](https://toolwell.vercel.app/tools/qr-code-generator/): Generate QR codes from text or URLs right in your browser with no upload.
- [Favicon Placeholder Generator](https://toolwell.vercel.app/tools/favicon-placeholder-generator/): Create simple favicon placeholders with initials or text on a colored background.
- [Gradient Generator](https://toolwell.vercel.app/tools/gradient-generator/): Design CSS gradients visually and copy the generated background code.
- [Box Shadow Generator](https://toolwell.vercel.app/tools/box-shadow-generator/): Create CSS box shadows with a live preview and copy the final code.
- [CSS Grid Generator](https://toolwell.vercel.app/tools/css-grid-generator/): Build CSS Grid layouts visually and generate the exact grid code.
- [Flexbox Layout Generator](https://toolwell.vercel.app/tools/flexbox-layout-generator/): Design flexbox layouts visually and copy the generated CSS.
- [Meta Tag Generator](https://toolwell.vercel.app/tools/meta-tag-generator/): Generate complete SEO meta tag markup from a simple form.
- [Robots.txt Generator](https://toolwell.vercel.app/tools/robots-txt-generator/): Generate a robots.txt file with custom user agents, rules, and sitemap entry.
- [Sitemap Config Generator](https://toolwell.vercel.app/tools/sitemap-config-generator/): Generate an XML sitemap from a list of URLs with priority and change frequency.
- [Keycode Event Inspector](https://toolwell.vercel.app/tools/keycode-event-inspector/): Press any key to see its keycode, key value, and code live in the browser.
- [HTACCESS Generator](https://toolwell.vercel.app/tools/htaccess-generator/): Generate common .htaccess snippets for redirects, caching, and security.
- [JWT Inspector](https://toolwell.vercel.app/tools/jwt-inspector/): Decode JWT header and payload locally to inspect claims and tokens.

## Formatters Tools

- [JSON Formatter](https://toolwell.vercel.app/tools/json-formatter/): Prettify, validate, and minify JSON with a clean side-by-side interface.
- [XML Formatter](https://toolwell.vercel.app/tools/xml-formatter/): Prettify and validate XML documents with customizable indentation.
- [HTML Formatter](https://toolwell.vercel.app/tools/html-formatter/): Beautify minified or messy HTML into readable, indented markup.
- [CSS Formatter](https://toolwell.vercel.app/tools/css-formatter/): Prettify compressed CSS into readable rules with consistent indentation.
- [SQL Formatter](https://toolwell.vercel.app/tools/sql-formatter/): Beautify SQL queries with configurable keyword casing and indentation.
- [JS / JSON Minifier](https://toolwell.vercel.app/tools/js-json-minifier/): Minify JavaScript and JSON to shrink file size for production.
- [CSS Minifier](https://toolwell.vercel.app/tools/css-minifier/): Minify CSS by removing whitespace and comments to reduce file size.
- [SVG Code Optimizer](https://toolwell.vercel.app/tools/svg-optimizer/): Clean and compress SVG markup by stripping comments and excess whitespace.
- [YAML Formatter](https://toolwell.vercel.app/tools/yaml-formatter/): Parse, validate, and format YAML with a readable, consistent style.
- [Markdown Table Formatter](https://toolwell.vercel.app/tools/markdown-table-formatter/): Align and clean up Markdown tables for consistent, readable columns.
- [CSV to JSON Converter](https://toolwell.vercel.app/tools/csv-to-json-converter/): Convert CSV data into JSON arrays or objects with delimiter options.
- [JSON to CSV Converter](https://toolwell.vercel.app/tools/json-to-csv-converter/): Convert JSON arrays into clean CSV with headers generated automatically.
- [List Formatter](https://toolwell.vercel.app/tools/list-formatter/): Transform a plain list into bullets, numbered, comma-separated, or JSON format.
- [Indentation Fixer](https://toolwell.vercel.app/tools/indentation-fixer/): Auto-indent code with spaces or tabs and detect the dominant indentation.
- [Unescape HTML Entities](https://toolwell.vercel.app/tools/unescape-html-entities/): Convert HTML entities like & and < back into their character forms.
- [Escape HTML Entities](https://toolwell.vercel.app/tools/escape-html-entities/): Escape special characters into HTML entities for safe inline display.
- [URL Parser](https://toolwell.vercel.app/tools/url-parser/): Break any URL into protocol, host, path, query, and hash components.
- [Timestamp Formatter](https://toolwell.vercel.app/tools/timestamp-formatter/): Convert Unix timestamps to readable dates and back, in your timezone.
- [Log File Formatter](https://toolwell.vercel.app/tools/log-file-formatter/): Align and pretty-print log lines by padding values and aligning key columns.
- [String Escaper](https://toolwell.vercel.app/tools/string-escaper/): Escape and unescape strings for JavaScript, JSON, and shell contexts.

## Calculators Tools

- [Percentage Calculator](https://toolwell.vercel.app/tools/percentage-calculator/): Find what percent one number is of another, plus percentage increase and decrease.
- [Percentage Change Calculator](https://toolwell.vercel.app/tools/percentage-change-calculator/): Calculate the percent increase or decrease between two values instantly.
- [Aspect Ratio Calculator](https://toolwell.vercel.app/tools/aspect-ratio-calculator/): Calculate missing width or height to keep any aspect ratio, with common presets.
- [Discount Calculator](https://toolwell.vercel.app/tools/discount-calculator/): Work out the sale price and amount saved from any discount percentage.
- [Sales Tax Calculator](https://toolwell.vercel.app/tools/sales-tax-calculator/): Add or remove sales tax from a price and see the tax amount clearly.
- [Compound Interest Calculator](https://toolwell.vercel.app/tools/compound-interest-calculator/): Project compound interest growth with monthly contributions and compounding periods.
- [BMI Calculator](https://toolwell.vercel.app/tools/bmi-calculator/): Calculate Body Mass Index from height and weight with category guidance.
- [Age Calculator](https://toolwell.vercel.app/tools/age-calculator/): Calculate exact age in years, months, and days from any birthdate.
- [Date Difference Calculator](https://toolwell.vercel.app/tools/date-difference-calculator/): Count the exact number of days, weeks, months, and years between two dates.
- [Time Difference Calculator](https://toolwell.vercel.app/tools/time-difference-calculator/): Calculate the duration between two times or dates in hours and minutes.
- [CPM Calculator](https://toolwell.vercel.app/tools/cpm-calculator/): Calculate cost per mille for ad campaigns from spend and impressions.
- [Margin / Markup Calculator](https://toolwell.vercel.app/tools/margin-calculator/): Convert between profit margin and markup from cost and selling price.
- [GPA Calculator](https://toolwell.vercel.app/tools/gpa-calculator/): Calculate GPA from course credits and letter grades, 4.0 scale.
- [Calorie Calculator](https://toolwell.vercel.app/tools/calorie-calculator/): Estimate daily calorie needs using BMR formulas and activity level.
- [Pace Calculator](https://toolwell.vercel.app/tools/pace-calculator/): Calculate running pace, speed, and estimated finish times from distance and time.
- [Mortgage Calculator](https://toolwell.vercel.app/tools/mortgage-calculator/): Estimate monthly mortgage payments from loan amount, rate, and term.
- [Tip Calculator](https://toolwell.vercel.app/tools/tip-calculator/): Split a bill and tip among friends with per-person totals in seconds.
- [Subnet Mask Calculator](https://toolwell.vercel.app/tools/subnet-calculator/): Compute subnet masks, network and broadcast addresses, and usable hosts.
- [Pixel Density (PPI) Calculator](https://toolwell.vercel.app/tools/pixel-density-calculator/): Calculate pixels per inch from screen resolution and diagonal size.
- [Bandwidth Calculator](https://toolwell.vercel.app/tools/bandwidth-calculator/): Estimate transfer time for files over any connection speed.

## Blog

- [How to Calculate Percentage: The Easiest Method](https://toolwell.vercel.app/blog/how-to-calculate-percentage/): Calculating a percentage is one of the most useful everyday math skills. Learn the single formula behind every percentage problem, with worked examples you can use today.
- [How to Calculate BMI at Home: Formula and What It Means](https://toolwell.vercel.app/blog/bmi-calculator-formula-guide/): Body Mass Index (BMI) is a quick screening tool based on height and weight. Learn the BMI formula, how to calculate it at home, and what the categories actually mean.
- [CSS Minification Explained: Why Minified CSS Loads Faster](https://toolwell.vercel.app/blog/css-minification-explained/): CSS minification strips away whitespace, comments, and unneeded characters. Learn how it shrinks file sizes, why smaller stylesheets load faster, and when to minify.
- [How to Convert Markdown to HTML](https://toolwell.vercel.app/blog/markdown-to-html-guide/): Markdown is everywhere — READMEs, docs, comments, and notes. Learn how to convert Markdown to HTML, why the conversion matters, and the tools that do it instantly.
- [What Is an Aspect Ratio and How to Calculate It](https://toolwell.vercel.app/blog/aspect-ratio-calculator-guide/): Aspect ratio is the proportional relationship between an image’s width and height. Learn what 16:9 and 4:3 mean and how to calculate missing dimensions without cropping surprises.
- [How to Calculate Compound Interest: Formula and Examples](https://toolwell.vercel.app/blog/compound-interest-explained/): Compound interest is how savings grow and how debt balloons. Learn the compound interest formula, see it in action with worked examples, and understand why time beats rate every time.
- [How to Calculate Tips and Split a Bill Fairly](https://toolwell.vercel.app/blog/tip-and-bill-splitting-guide/): Never fumble the math at the table again. Learn how to calculate a tip by percentage, how to split a bill evenly or by what each person ordered, and the tricks servers use.
- [Regular Expressions (Regex) Explained with Real Examples](https://toolwell.vercel.app/blog/regex-explained-with-examples/): Regex looks like gibberish until you learn its building blocks. Understand patterns, character classes, and quantifiers with real examples you can test in seconds.
- [Text Case Converter: Title Case, Sentence Case, Camel Case, and More](https://toolwell.vercel.app/blog/text-case-guide/): Title case, sentence case, camelCase, snake_case, kebab-case — learn what each text case is, when to use it, and how to convert between them without retyping a single word.
- [How to Count Days Between Two Dates (and Why It Matters)](https://toolwell.vercel.app/blog/days-between-dates-guide/): Deadlines, deliveries, and billing cycles all come down to one number: the days between two dates. Learn how to count them accurately, including leap years and holidays.
- [REM vs PX: Which Should You Use?](https://toolwell.vercel.app/blog/rem-vs-px-which-should-you-use/): A practical, developer-friendly breakdown of when to use rem and when to use px in CSS — and why the choice affects accessibility, maintainability, and the quality of your design system.
- [How to Use a Word Counter to Improve Your Writing](https://toolwell.vercel.app/blog/how-to-use-a-word-counter/): Word count targets are everywhere — essays, blog posts, ad copy, and more. Here is how to use a word and character counter to meet limits, tighten your drafts, and write with more control.
- [Base64 Encoding Explained: What It Is and When to Use It](https://toolwell.vercel.app/blog/base64-encoding-explained/): Base64 lets you represent binary data as plain text. Learn how it works, why it is used for email attachments, data URLs, and APIs, and where it is (and is not) secure.
- [How Strong Is Your Password? A Practical Guide](https://toolwell.vercel.app/blog/how-strong-is-your-password/): Length beats complexity. Learn what actually makes a password strong, how password generators create secure strings, and how to store them so you never reuse a weak one again.
- [JSON Formatter: A Beginner’s Guide to Clean, Valid JSON](https://toolwell.vercel.app/blog/json-formatter-beginners-guide/): JSON is the language of APIs and config files. Learn what valid JSON looks like, how to format it for readability, and how to catch the tiny errors that break your requests.
- [RGB vs HEX: Choosing the Right Color Code for CSS](https://toolwell.vercel.app/blog/rgb-vs-hex-color-codes/): HEX and RGB are the two most common ways to write colors in CSS. Learn how to convert between them, when to use each, and why modern CSS is pushing developers toward yet another format.
- [Percentage Increase and Decrease Made Simple](https://toolwell.vercel.app/blog/percentage-increase-and-decrease/): Percentages appear in discounts, salary changes, growth reports, and grades. Learn the one formula behind them all, how to avoid the most common error, and how to check your math in seconds.
- [UUIDs Explained: What They Are and Why They Matter](https://toolwell.vercel.app/blog/uuid-v4-explained/): UUIDs give every row, file, and event a globally unique identifier without a central authority. Learn how UUID v4 works, when to reach for it, and when sequential IDs are still the better choice.
- [Temperature Conversion: Celsius, Fahrenheit, and Kelvin](https://toolwell.vercel.app/blog/temperature-conversion-guide/): Recipes, weather reports, science experiments, and travel all use different temperature scales. Learn the formulas for converting Celsius, Fahrenheit, and Kelvin — and the mental shortcuts that cover most real-life cases.
- [QR Codes for Beginners: How to Generate and Use Them Safely](https://toolwell.vercel.app/blog/qr-codes-safety-guide/): QR codes went from convenience to everyday necessity. Learn how they work, how to generate one for any text or URL, and — most importantly — how to scan them without falling for a phishing link.