Browse free online tools by category to quickly find practical utilities for writing, SEO, development, calculations, conversions, and productivity workflows.
All Free Online Tools
183 free tools for everyday tasks — calculators, converters, text utilities, developer tools, and more. No signup required. Many tools run directly in your browser whenever possible.
🔐 Security & Passwords
Password Generator
Generate strong, random passwords with custom options.
Password Strength Checker
Check how strong your password is and get tips.
Password Hasher
Hash passwords with SHA-256, SHA-512 and more.
Hash Generator
Generate MD5, SHA-1, SHA-256 hashes from text.
UUID Generator
Generate and copy multiple unique UUIDs.
Text Encryptor
Encrypt and decrypt text with Caesar cipher & ROT13.
Username Generator
Generate catchy usernames for social, gaming, and brands.
📝 Text & Writing
Word Counter
Count words, characters, sentences, and reading time.
Character Counter
Count characters with and without spaces.
Text Case Converter
Convert text to upper, lower, title, or sentence case.
Lorem Ipsum Generator
Generate placeholder text for designs and mockups.
Text Diff Checker
Compare two texts and highlight differences.
Word Frequency Counter
Find the most common words in any text.
Reading Time Calculator
Estimate how long it takes to read any text.
Text Summarizer
Automatically summarize long texts.
Text Repeater
Repeat any text a specified number of times.
String Reverser
Reverse any text, string, or sentence.
Palindrome Checker
Check if a word or phrase is a palindrome.
Anagram Checker
Check if two words are anagrams of each other.
Line Counter
Count the number of lines in any text.
Duplicate Line Remover
Remove duplicate lines from any text.
Sort Lines
Sort lines alphabetically, numerically, or randomly.
Find and Replace
Find and replace text in bulk with regex support.
Text to List
Convert plain text to bullet or numbered lists.
Slug Generator
Convert text to URL-friendly slugs.
Markdown Preview
Write and preview Markdown in real time.
Typing Speed Test
Test your typing speed and accuracy in WPM.
Resignation Letter Generator
Create a professional resignation letter in seconds.
Email Signature Generator
Build a professional email signature with HTML output.
Blog Title Generator
Generate SEO blog headline ideas for articles and landing pages.
Meta Description Generator
Write search snippet ideas for pages and posts.
Product Description Generator
Create ecommerce product copy with benefits and features.
Call To Action Generator
Generate CTA button copy for landing pages, emails, and ads.
YouTube Title Generator
Generate clickable title ideas for YouTube videos.
Email Subject Line Generator
Generate email subject ideas for launches, newsletters, and promos.
Instagram Bio Generator
Create Instagram bio ideas for creators and brands.
TikTok Caption Generator
Generate short captions for TikTok videos and campaigns.
YouTube Description Generator
Write value-focused YouTube descriptions fast.
Blog Outline Generator
Build SEO-friendly article structures from a keyword.
FAQ Generator
Generate FAQ question ideas for service and landing pages.
LinkedIn Headline Generator
Generate LinkedIn headlines for job seekers, founders, and consultants.
Cover Letter Generator
Build a custom cover letter draft for your next application.
Resume Summary Generator
Create professional resume summary examples in seconds.
Blog Intro Generator
Write opening paragraphs for SEO articles and blog posts.
🔢 Calculators
Percentage Calculator
Calculate percentages, increases, and decreases.
Scientific Calculator
Advanced calculator with trigonometry and more.
BMI Calculator
Calculate your Body Mass Index and health category.
Age Calculator
Calculate your exact age in years, months, and days.
Loan Calculator
Calculate monthly payments and total interest.
Tip Calculator
Calculate tips and split bills easily.
Discount Calculator
Calculate discounts and final prices.
Compound Interest Calculator
Calculate compound interest and investment growth.
Grade Calculator
Calculate GPA and weighted grade averages.
Salary Calculator
Convert hourly, monthly, and annual salary.
Fuel Cost Calculator
Calculate trip fuel cost based on distance and MPG.
Speed Distance Time
Calculate speed, distance, or time from two values.
Mortgage Overpayment Calculator
See how much you save with extra mortgage payments.
Statistics Calculator
Mean, median, mode, standard deviation and more.
Matrix Calculator
Add, multiply, and transpose matrices.
LCM & GCD Calculator
Find the Least Common Multiple and Greatest Common Divisor.
Equation Solver
Solve linear and quadratic equations step by step.
Fibonacci Generator
Generate Fibonacci numbers and learn about the golden ratio.
Prime Number Checker
Check if a number is prime and find primes up to N.
Sales Tax Calculator
Calculate tax-inclusive and tax-exclusive totals instantly.
Emergency Fund Calculator
Set a target emergency reserve based on monthly expenses.
Retirement Calculator
Project retirement savings using contributions and expected returns.
Investment Return Calculator
Forecast investment growth with monthly contributions.
FIRE Calculator
Estimate your Financial Independence target and progress.
Dividend Yield Calculator
Calculate dividend yield and annual income from shares.
Portfolio Allocation Calculator
Convert allocation percentages into target dollar amounts.
DCA Calculator
Estimate long-term growth using dollar-cost averaging.
CAGR Calculator
Calculate annualized investment growth over time.
Net Worth Calculator
Track your net worth with assets and liabilities.
Savings Goal Calculator
Estimate how long it takes to reach your savings target.
Rent Affordability Calculator
Estimate how much rent you can comfortably afford.
Concrete Calculator
Estimate concrete volume in cubic yards and bags.
Gravel Calculator
Find gravel volume and tonnage for landscaping projects.
🏥 Health & Fitness
Ideal Weight Calculator
Find your ideal weight based on height and gender.
Calorie Calculator
Calculate your daily calorie needs (TDEE).
Body Fat Calculator
Estimate your body fat percentage.
Sleep Calculator
Calculate the best bedtime based on sleep cycles.
Water Intake Calculator
Calculate your recommended daily water intake.
Pregnancy Due Date Calculator
Estimate due date, trimester milestones, and pregnancy week.
Ovulation Calculator
Estimate your ovulation day and fertile window.
Macro Calculator
Turn calories into carb, protein, and fat targets.
🎨 Colors & Design
Color Picker
Pick colors and get HEX, RGB, and HSL codes.
Color Palette Generator
Generate beautiful color palettes for your projects.
Gradient Generator
Create CSS gradients with a visual editor.
Contrast Checker
Check WCAG color contrast for accessibility.
HEX to RGB Converter
Convert HEX color codes to RGB and vice versa.
Random Color Generator
Generate random colors in HEX, RGB, and HSL.
Color Name Finder
Find the name of any color from its HEX or RGB value.
Image Color Extractor
Extract dominant colors from any image.
Screen Color Picker
Pick any color from your screen with the EyeDropper.
💻 Developer Tools
JSON Formatter
Format, validate, and minify JSON data.
Base64 Encoder/Decoder
Encode and decode Base64 strings.
URL Encoder/Decoder
Encode and decode URLs and query strings.
HTML Encoder/Decoder
Encode and decode HTML entities.
Regex Tester
Test and debug regular expressions in real time.
Number Base Converter
Convert between binary, octal, decimal, and hex.
CSV to JSON
Convert CSV data to JSON format instantly.
JSON to CSV
Convert JSON arrays to CSV for Excel.
XML Formatter
Format and validate XML data.
CSS Minifier
Minify and compress CSS code.
HTML Minifier
Compress HTML by removing whitespace and comments.
IP Address Lookup
Find location and ISP for any IP address.
PX to REM Converter
Convert pixels to REM units for responsive CSS.
CSS Box Shadow Generator
Generate CSS box shadow code visually.
Border Radius Generator
Generate CSS border-radius for rounded corners.
Flexbox Generator
Generate CSS Flexbox layout code visually.
CSS Animation Generator
Generate CSS keyframe animations visually.
Meta Tag Generator
Generate SEO-optimized HTML meta tags.
HTML Table Generator
Generate HTML table code visually.
CSS Unit Converter
Convert between px, em, rem, vw, vh, and more.
Screen Resolution Checker
Check your screen resolution and viewport size.
Keyboard Shortcuts Reference
A complete reference for keyboard shortcuts.
🔄 Converters
Unit Converter
Convert length, weight, volume, and more.
Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin.
Currency Converter
Convert between world currencies with live rates.
Roman Numeral Converter
Convert between Roman numerals and Arabic numbers.
Morse Code Translator
Translate text to and from Morse code.
Binary Text Converter
Convert text to binary and binary to text.
Number to Words
Convert numbers to their word representation.
camelCase Converter
Convert between camelCase, snake_case, kebab-case.
Aspect Ratio Calculator
Calculate and convert image aspect ratios.
⏱ Time & Dates
Stopwatch
Online stopwatch with lap timer.
Countdown Timer
Set a countdown timer for any duration.
Pomodoro Timer
Boost productivity with the Pomodoro technique.
Date Difference Calculator
Calculate the number of days between two dates.
Days Until Calculator
Count down days until any future date.
Time Zone Converter
Convert times between world time zones.
Sleep Calculator
Find the best bedtime based on sleep cycles.
🎲 Fun & Random
Random Number Generator
Generate random numbers in a custom range.
Coin Flip
Flip a virtual coin — heads or tails.
Dice Roller
Roll virtual dice with any number of sides.
Yes or No Wheel
Spin a wheel to get a random Yes or No answer.
Random Name Generator
Generate random names for characters and projects.
Random Color Generator
Generate random colors for design inspiration.
Random Quote Generator
Get random inspirational and motivational quotes.
🌐 Web & SEO
QR Code Generator
Create QR codes from any text or URL.
Barcode Generator
Generate barcodes from any text or number.
Meta Tag Generator
Generate SEO-optimized HTML meta tags.
IP Address Lookup
Find location and ISP for any IP address.
Slug Generator
Convert text to URL-friendly slugs.
Hashtag Generator
Generate hashtag sets for Instagram, TikTok, YouTube, and more.
UTM Builder
Create campaign URLs with UTM tracking parameters.
Keyword Density Checker
Analyze the top repeated terms in your content.
FAQ Schema Generator
Build FAQPage JSON-LD structured data markup.
Robots.txt Generator
Generate a robots.txt file with sitemap and crawl rules.
Business Name Generator
Generate startup, agency, and brand name ideas.
Slogan Generator
Create short brand slogans and tagline ideas.
Product Name Generator
Generate product naming ideas for launches and ecommerce.
Podcast Name Generator
Generate podcast show names for creators and businesses.
Domain Name Generator
Generate brandable domain name ideas for startups and side projects.
Google Ads Headline Generator
Create short PPC headlines for Google Ads campaigns.
Etsy Title Generator
Generate SEO-friendly Etsy listing title ideas.
Pinterest Title Generator
Generate pin title ideas for saves, clicks, and discovery.
FAQ Question Generator
Generate FAQ ideas for service pages, stores, and blog posts.
Value Proposition Generator
Create clear value proposition statements for landing pages.
SEO Title Generator
Generate click-friendly SEO titles for blogs and landing pages.
Blog Conclusion Generator
Generate closing paragraphs for SEO articles and affiliate posts.
Keyword Cluster Generator
Generate related keyword cluster ideas for topical authority.
Lead Magnet Idea Generator
Generate checklist, guide, and freebie ideas to grow your list.
Landing Page Headline Generator
Create conversion-focused headlines for landing pages and offers.
Google Business Description Generator
Generate local SEO descriptions for Google Business Profiles.
Facebook Ad Copy Generator
Generate Meta ad copy ideas for services, leads, and ecommerce.
Content Calendar Generator
Generate a month of content topics for blogs and niche sites.
Newsletter Idea Generator
Generate newsletter topic ideas that bring readers back.
YouTube Tag Generator
Generate relevant YouTube tag ideas for videos and tutorials.
Blog Post Ideas Generator
Generate search-intent blog ideas to attract long-tail traffic.
Long Tail Keyword Generator
Create keyword variations for lower-competition organic opportunities.
SEO Content Brief Generator
Create SEO-ready content brief structures for writers and editors.
Programmatic SEO Ideas Generator
Generate scalable page templates for high-volume long-tail targeting.
Local SEO Service Page Generator
Generate local service page angles for city + keyword search intent.
Topical Authority Map Generator
Build SEO topic clusters and pillar page maps to grow authority.
Schema Markup Ideas Generator
Get schema opportunities for rich snippets and stronger SERP visibility.
Internal Link Strategy Generator
Create internal linking plans to improve crawl depth and rankings.
SEO Audit Checklist Generator
Generate technical and on-page checklist ideas for SEO audits.
Affiliate Content Outline Generator
Generate affiliate article outlines for high-intent commercial queries.