All Free Online Tools
Browse 61+ utility tools covering text, image, developer, calculator and productivity workflows. Every tool runs in your browser — no signup, no installs, no data sent to a server.
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BMI Calculator
Calculate your Body Mass Index using height and weight measurements to understand where you fall on the BMI scale. Get instant results with category classification and personalized health context.
Age Calculator
Calculate your exact age in years, months, days, hours, and minutes from your date of birth. Perfect for official documents, milestone tracking, and countdown to your next birthday.
Percentage Calculator
Solve any percentage problem with multiple calculation modes: find percentage of a number, calculate percentage change between values, or determine what percentage one number is of another.
EMI Calculator
Calculate your Equated Monthly Installment for home loans, car loans, and personal loans. See total interest payable, total payment amount, and detailed month-by-month amortization schedule.
Loan Calculator
Plan your borrowing with precise monthly payment calculations, total interest cost analysis, and complete amortization schedules. Compare different loan terms to find the best option for your budget.
Interest Calculator
Calculate both simple and compound interest on savings, investments, or loans. Understand how your money grows over time with different compounding frequencies and interest rates.
BMR Calculator
Calculate your Basal Metabolic Rate to understand how many calories your body burns at rest. Also computes Total Daily Energy Expenditure (TDEE) based on your activity level for effective diet planning.
Calories Calculator
Determine your daily calorie needs based on your fitness goals: weight loss, maintenance, or muscle gain. Get personalized recommendations considering your age, gender, activity level, and target weight.
Body Fat Calculator
Estimate your body fat percentage using the US Navy circumference method. A more accurate measure of fitness than BMI alone, body fat percentage helps track progress beyond just scale weight.
Ideal Weight Calculator
Find your ideal body weight range using four scientifically-backed formulas: Devine, Robinson, Miller, and Hamwi. Compare results to understand the healthy weight range for your height and frame.
Scientific Calculator
A full-featured scientific calculator with trigonometric functions, logarithms, powers, roots, factorials, and memory operations. Perfect for students, engineers, and professionals who need advanced calculations.
Unit Converter
Convert between units of length, weight, temperature, volume, speed, area, and digital storage. Supports both metric and imperial systems with instant real-time conversion as you type.
Pregnancy Calculator
Calculate your due date, current week, trimester, and baby milestones.
Ovulation Calculator
Track your fertile window, ovulation date, and period cycle.
GST Calculator
Calculate GST inclusive/exclusive price with CGST, SGST, and IGST split.
SIP Calculator
Estimate SIP maturity value, invested amount, and returns with yearly growth.
Word Counter
Count words, characters, sentences, paragraphs, and estimate reading time for any text. Essential for writers, students, and content creators who need to meet specific length requirements.
Character Counter
Count characters with detailed breakdown including letters, digits, spaces, and special characters. Check limits for Twitter, SMS, meta descriptions, and other character-limited platforms.
Case Converter
Convert text between different case formats: UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, and more. Perfect for coding and content formatting.
Remove Extra Spaces
Clean up messy text by removing extra whitespace, multiple spaces, leading/trailing spaces, and blank lines. Essential for formatting copied text from PDFs, emails, or poorly formatted documents.
Text Sorter
Sort text lines alphabetically (A-Z or Z-A), by length (shortest or longest first), numerically, or randomly shuffle them. Perfect for organizing lists, data, and content.
Text Reverser
Reverse text in multiple ways: flip the entire string character by character, reverse word order while keeping words intact, or reverse line order. Useful for puzzles, coding, and creative writing.
Duplicate Line Remover
Remove duplicate lines from your text to get only unique entries. Supports case-sensitive and case-insensitive matching, with options to preserve original order or sort results.
Slug Generator
Generate clean, SEO-friendly URL slugs from any text. Automatically handles special characters, accents, spaces, and multiple languages to create valid web addresses.
AI Meta Title Generator
Generate SEO-friendly meta titles under 60 characters with SERP preview.
AI Meta Description Generator
Generate SEO meta descriptions under 160 characters with keyword highlighting.
Random Text Generator
Generate lorem ipsum or random placeholder text.
JSON Formatter
Format, validate, and minify JSON data.
JSON to CSV Converter
Convert JSON arrays to CSV format.
Base64 Encode/Decode
Encode or decode text to/from Base64.
URL Encode/Decode
Encode or decode URLs and query strings.
HTML Minifier
Minify HTML by removing comments and whitespace.
CSS Minifier
Minify CSS by removing comments and whitespace.
JS Minifier
Basic JavaScript minification.
Markdown Preview
Write markdown and preview rendered output live.
JWT Decoder
Decode JWT header and payload instantly with expiry and issuer details.
Diff Checker
Compare original and modified text with highlighted additions and deletions.
Image Resizer
Resize images to specific dimensions.
Image Cropper
Crop images with an interactive editor.
Image Rotate/Flip
Rotate or flip images easily.
Image Compressor
Compress images to reduce file size.
Photo Collage
Combine multiple photos into a collage with grid layouts.
Typing Speed Test
Test your typing speed and accuracy in real time.
Weather & AQI
Check current weather and air quality for any city.
Text to PDF
Convert text content into a downloadable PDF document.
Merge PDF
Combine multiple PDF files into one document.
Password Generator
Generate strong, secure random passwords.
Stopwatch
Precision stopwatch with lap times.
PDF Editor
All-in-one PDF Editor: DOC to PDF, merge, convert, compress, and password-protect in one page.
Advanced PDF Editor
Complete PDF editor: convert images and documents to PDF, export pages as images, merge, split, rotate, extract, crop, compress, watermark, add text, page numbers, protect, unlock, flatten, and grayscale. All in one tool.
Music Tools
Extract audio from video, make ringtones, speech to text, and add audio to video.
YouTube Video Downloader
Download YouTube videos in HD, SD, and MP3 formats instantly.
Instagram Video Downloader
Download Instagram Reels, videos, and posts without watermark.
Facebook Video Downloader
Download Facebook videos, Reels, and public posts in HD.
YouTube Thumbnail Downloader
Download YouTube video thumbnails in all available sizes instantly.
UPI QR Generator
Generate a scannable UPI payment QR code with your UPI ID and amount.
XML Sitemap Generator
Generate an XML sitemap for your website with priority and change frequency.
Robots.txt Generator
Generate a custom robots.txt file with user-agents, allow and disallow rules.
Schema Markup Generator
Generate JSON-LD schema markup for 15+ types including Article, Product, FAQPage.
Cron Expression Generator
Build and decode cron expressions with a visual builder and next-run preview.
Keyword Density Checker
Analyze keyword frequency and density in your article text.
About this tool library
Every tool listed here is reviewed and maintained by the Multitoolify editorial team. Tools run entirely in your browser — your input is never sent to our servers. Browse Resources & Tutorials for step-by-step workflows, or visit individual category pages to discover tools grouped by task type.
