All Tools
Choose from our collection of free, fast, and privacy-friendly online utilities
Math & Finance
Calculator
Perform basic and advanced math operations quickly and accurately.
MathPercentage Calculator
Calculate percentages, increases, decreases, and differences between values.
MathLoan Calculator
Estimate monthly payments, total interest, and amortization for any loan.
FinanceAge Calculator
Find your exact age in years, months, days, hours, and minutes.
MathTip Calculator
Calculate tips, split bills between friends, and see per-person totals instantly.
FinanceDiscount Calculator
Calculate sale prices, savings, and final cost after single or stacked discounts.
FinanceHealth & Fitness
BMI Calculator
Calculate your Body Mass Index and understand your health category based on WHO standards.
HealthCalorie Calculator
Estimate your daily calorie needs based on age, weight, height, and activity level.
HealthText & Writing
Word Counter
Count words, characters, sentences, and paragraphs. Estimate reading time instantly.
WritingCase Converter
Convert text between uppercase, lowercase, title case, sentence case, and more.
WritingLorem Ipsum Generator
Generate placeholder text for your designs, mockups, and web development projects.
WritingSecurity & Developer
Password Generator
Create strong, cryptographically random passwords with customizable length and complexity.
SecurityHash Generator
Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes from any text using the Web Crypto API.
SecurityJSON Formatter
Format, validate, beautify, and minify JSON data with syntax highlighting.
DeveloperBase64 Encoder/Decoder
Encode text to Base64 or decode Base64 strings back to plain text instantly.
DeveloperConverters & Generators
Unit Converter
Convert between length, weight, temperature, speed, area, volume, and more units.
ConverterQR Code Generator
Generate QR codes for URLs, text, Wi-Fi credentials, and contact information.
GeneratorImage Converter
Convert images between PNG, JPG, and WebP formats directly in your browser.
ConverterColor Picker
Pick colors and get HEX, RGB, and HSL values. Generate color palettes for your projects.
DesignPDF & Document Tools
Merge PDF
Combine multiple PDF files into one document. Drag, drop, reorder, and merge.
PDFSplit PDF
Extract specific pages or split a PDF into individual single-page files.
PDFRotate PDF
Rotate individual pages or all pages 90°, 180°, or 270° in any direction.
PDFWatermark PDF
Add custom text watermarks with adjustable size, color, opacity, and angle.
PDFProtect PDF
Add password protection to your PDF files to prevent unauthorized access.
PDFPage Numbers
Add page numbers to any position with customizable format and font size.
PDFImage to PDF
Convert multiple images into a single PDF document instantly.
PDFText Diff Checker
Compare two texts side by side and find additions, deletions, and changes.
TextImage Tools
Image Compressor
Reduce image file sizes while maintaining quality. Supports JPEG, PNG, and WebP with adjustable compression.
ImageImage Resizer
Resize images to exact dimensions with presets for social media, web, and print.
ImageUtility
Stopwatch & Timer
Precise online stopwatch with lap tracking and countdown timer functionality.
UtilityPomodoro Timer
Boost productivity with focused 25-minute work sessions and timed breaks.
ProductivityMap Visualizer
Visualize coordinates on multiple map providers including Google Maps and OpenStreetMap.
UtilityWhy Choose MultiToolWeb?
Built with simplicity, speed, and privacy in mind
Lightning Fast
All tools run entirely in your browser. No server processing means instant results with zero waiting time.
100% Private
Your data never leaves your device. We don't store, track, or transmit any information you enter into our tools.
Works Everywhere
Fully responsive design that works perfectly on desktop, tablet, and mobile devices. No app download needed.
Always Free
Every tool on MultiToolWeb is completely free to use. No hidden fees, no premium tiers, no signup walls.
About Our Free Online Tools
MultiToolWeb is a growing collection of free, browser-based utilities designed to help you with everyday tasks. Whether you need to calculate your BMI, generate a secure password, convert units of measurement, or create a QR code, our tools are built to be fast, accurate, and easy to use.
How Our Tools Work
Every tool on MultiToolWeb runs entirely in your web browser using JavaScript. This means your data is processed locally on your device and is never sent to any external server. Our PDF tools use the open-source pdf-lib library, and our hash generator uses the Web Crypto API built into modern browsers.
Who Is MultiToolWeb For?
Our tools are designed for everyone — students working on assignments, professionals who need quick calculations, developers looking for utility tools, and anyone who wants to get things done without installing software. Each tool includes detailed instructions and educational content to help you understand not just how to use the tool, but the concepts behind it.
Our Commitment to Quality
We regularly update our tools to ensure accuracy and add new features based on user feedback. Each calculator and converter is tested against known values and standards to provide reliable results. If you find any issues or have suggestions for new tools, please visit our contact page.