Tools Directory
Browse, filter, and search through our complete suite of browser-first calculators, converters, image optimizers, and developer utilities.
Percentage Calculator
Calculate percentage of a number, percentage change, and relative percentage values.
Percentage Increase Calculator
Calculate the percentage growth from an original value to a higher new value.
Percentage Decrease Calculator
Calculate the percentage drop or reduction between an original and a lower value.
Age Calculator
Calculate exact age in years, months, days, hours, and minutes with next birthday countdown.
Date Difference Calculator
Calculate the total days, weeks, and months between two dates.
Average Calculator
Calculate mean, median, mode, range, geometric mean, and sum of a set of numbers.
Ratio Calculator
Simplify ratios, find equivalent ratios, and solve for unknown values in proportions (A:B = C:D).
Fraction Calculator
Add, subtract, multiply, and divide fractions with step-by-step reduction and decimal conversion.
Discount Calculator
Calculate sale prices, total dollar savings, and additional stacked discounts.
Profit & Loss Calculator
Calculate total profit or loss, profit percentage, and net return from cost and selling price.
Margin Calculator
Calculate gross profit margin, revenue, cost, and gross profit.
Markup Calculator
Calculate selling price and profit from cost and desired markup percentage.
BMI Calculator
Calculate Body Mass Index (BMI) for adults using Metric or US Imperial measurements.
Speed, Distance & Time Calculator
Calculate speed, distance, or travel time from any two known variables.
Fuel Cost Calculator
Estimate gas trip costs based on trip distance, fuel economy, and gas prices.
GPA Calculator
Calculate cumulative semester Grade Point Average (GPA) from letter grades and credit hours.
Mortgage Calculator
Calculate monthly mortgage payments, total interest, and complete amortization schedule.
US Mortgage Calculator
US-specific mortgage calculator with Property Taxes, Homeowners Insurance, and PMI.
EMI Calculator
Calculate Equated Monthly Installment (EMI) for personal, car, and home loans.
Loan Calculator
Calculate monthly payment, total interest, and amortization schedule for any fixed-rate loan.
Simple Interest Calculator
Calculate simple interest accrued and final balance using the formula I = P × r × t.
Compound Interest Calculator
Calculate compound growth over time with customizable compounding frequencies and regular deposits.
Investment Calculator
Project future investment wealth and compare contributions against compound returns.
ROI Calculator
Calculate Return on Investment (ROI) percentage and annualized return rate.
CAGR Calculator
Calculate Compound Annual Growth Rate (CAGR) over multiple investment years.
Salary Calculator
Convert between hourly wage, annual salary, weekly, and bi-weekly earnings.
Retirement Calculator
Estimate nest egg savings needed for retirement and see if you are on track.
Inflation Calculator
Calculate the eroding effect of inflation on purchasing power over time.
Tip Calculator
Calculate restaurant tips and split bill totals evenly among dining guests.
Sales Tax Calculator
Calculate pre-tax price, sales tax amount, and total price after tax.
US Sales Tax Calculator
Calculate US state and local sales tax with state reference rates.
Break-Even Calculator
Calculate break-even units and revenue needed to cover fixed and variable costs.
Merge PDF
Combine multiple PDF files into a single organized document right in your browser.
Split PDF
Extract specific pages or page ranges from a PDF into separate documents.
Rotate PDF
Rotate PDF pages 90, 180, or 270 degrees clockwise permanently.
Extract PDF Pages
Select and export only the specific pages you need into a new PDF document.
Delete PDF Pages
Remove unwanted blank or duplicate pages from a PDF document.
Add PDF Watermark
Stamp text watermarks (e.g. CONFIDENTIAL, DRAFT, COPY) onto PDF pages.
PDF Page Numbering
Add page numbers to the header or footer of your PDF document.
PDF Metadata Viewer
Inspect and edit PDF metadata: Title, Author, Subject, Creator, and Producer.
JPG to PDF
Convert JPG/JPEG images into clean, high-resolution PDF documents.
PNG to PDF
Convert PNG graphics and screenshots into crisp PDF files.
Image Compressor
Compress JPG, PNG, and WEBP images locally in your browser without quality loss.
Image Resizer
Resize image dimensions by pixels or percentage with aspect ratio lock.
Image Cropper
Crop images to standard aspect ratios (1:1, 16:9, 4:3) or freeform dimensions.
Image Rotator
Rotate images 90 degrees clockwise, counter-clockwise, or 180 degrees.
Image Flipper
Mirror images horizontally or flip upside-down vertically.
JPG to PNG
Convert JPG images into lossless PNG format in your browser.
PNG to JPG
Convert PNG graphics to compact JPG images with adjustable compression.
WEBP to JPG
Convert modern WEBP web images to universally compatible JPG format.
JPG to WEBP
Convert JPG photos to modern lightweight WEBP format for faster web speed.
PNG to WEBP
Convert PNG graphics to WEBP format while preserving transparent alpha backgrounds.
WEBP to PNG
Convert WEBP files to uncompressed PNG format with full transparency preservation.
Image Aspect Ratio Calculator
Calculate proportional dimensions (width/height) based on aspect ratios (16:9, 4:3, 1:1).
Image Color Picker
Extract exact HEX, RGB, and HSL colors from any uploaded image with an interactive eyedropper.
Favicon Generator
Generate standard website favicon packages (16x16, 32x32, 48x48, 180x180) from any logo.
QR Code Generator
Create custom high-resolution QR codes for websites and plain text with colors and downloads.
WiFi QR Code Generator
Create QR codes that allow guests and customers to connect to WiFi without typing passwords.
vCard QR Code Generator
Create digital business card QR codes that save contact details directly to smartphone address books.
Email QR Code Generator
Generate QR codes that trigger pre-filled emails with recipient, subject, and body text.
Phone Call QR Code Generator
Create QR codes that prompt smartphones to dial a phone number immediately.
SMS QR Code Generator
Create QR codes that open text messaging apps with a pre-filled SMS message.
UPI QR Code Generator
Create payment QR codes for Google Pay, PhonePe, and Paytm using Indian UPI IDs.
Google Maps Location QR Code
Generate QR codes that open driving directions or location pins on Google Maps.
QR Code Scanner
Scan and decode QR codes from image files or your web camera directly in your browser.
Length Converter
Convert between meters, feet, inches, centimeters, kilometers, miles, and yards.
Weight & Mass Converter
Convert between kilograms, pounds, ounces, grams, stones, and metric tons.
Temperature Converter
Convert between Celsius (°C), Fahrenheit (°F), and Kelvin (K).
Area Converter
Convert between square feet, square meters, acres, hectares, and square kilometers.
Volume Converter
Convert between liters, milliliters, gallons, cups, fluid ounces, and pints.
Speed Converter
Convert between miles per hour (mph), kilometers per hour (km/h), knots, and m/s.
Data Storage Converter
Convert digital storage between Bytes, KB, MB, GB, TB, and Petabytes.
Time Converter
Convert between seconds, minutes, hours, days, weeks, months, and years.
Number to Words Converter
Convert numeric digits into formal English words and currency format for checks.
Words to Number Converter
Convert written English number words into numeric digits.
Roman Numeral Converter
Convert Arabic numbers to Roman numerals and Roman numerals to Arabic numbers.
Binary & Decimal Base Converter
Convert numbers between Binary (Base 2), Decimal (Base 10), Hexadecimal (Base 16), and Octal (Base 8).
Word Counter
Count words, characters, sentences, paragraphs, reading time, and speaking time in real time.
Case Converter
Convert text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, and snake_case.
Remove Duplicate Lines
Remove duplicate lines from text lists with case sensitivity and trimming options.
Sort Lines Alphabetically
Sort lines alphabetically (A-Z, Z-A), numerically, or by line length.
Reverse Text
Reverse entire text strings, reverse word order, or reverse per line.
Find and Replace Text
Search and replace words or patterns in text with RegEx and case matching.
Text Diff Checker
Compare two text blocks side-by-side to highlight additions, deletions, and changes.
URL Slug Generator
Generate clean, SEO-friendly URL slugs from any headline, title, or text.
Text Cleaner
Strip extra spaces, remove empty lines, unwrap line breaks, and strip HTML tags.
Lorem Ipsum Generator
Generate placeholder dummy text by paragraphs, sentences, words, or lists.
JSON Formatter & Validator
Prettify, format, validate, and minify JSON with syntax highlighting and error markers.
JSON Validator
Validate JSON syntax and identify exact error line and column numbers.
JSON Minifier
Compress JSON by stripping all whitespace and indentation for smaller payloads.
JSON to CSV Converter
Convert JSON arrays into tabular CSV files for Excel and Google Sheets.
CSV to JSON Converter
Convert CSV spreadsheet data into structured JSON objects or arrays.
Base64 Encoder & Decoder
Encode text and files to Base64 strings or decode Base64 back to readable text.
URL Encoder & Decoder
Encode URL query parameters safely with percent-encoding or decode URL strings.
HTML Entity Encoder & Decoder
Convert special characters into HTML entities (e.g. &, <, >) to prevent XSS.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 cryptographic hashes in real time.
JWT Decoder
Decode and inspect JSON Web Token (JWT) headers, claims, and expiry dates.
Regex Tester
Test regular expressions in real time with live match highlighting and flags.
Cron Expression Generator
Build cron schedule expressions with human-readable descriptions.
Color Converter (HEX, RGB, HSL, CMYK)
Convert colors between HEX, RGB, HSL, and CMYK formats with visual color preview.
URL Parser & Breakdown
Parse and dissect URLs into protocol, hostname, port, pathname, search params, and hash.
Meta Tag Generator & SERP Preview
Generate meta title and description tags with live Google desktop and mobile SERP preview.
Open Graph Generator
Create Open Graph (OG) meta tags with live social preview for Facebook and LinkedIn.
Twitter / X Card Generator
Generate Twitter/X Card meta tags with Summary and Large Image card previews.
Robots.txt Generator
Generate clean robots.txt directives for Googlebot, Bingbot, and search crawlers.
XML Sitemap Generator
Generate valid XML sitemaps from a list of URLs with changefreq and priority tags.
UTM Campaign URL Builder
Build Google Analytics UTM tracking links with source, medium, campaign, and content tags.
Keyword Density Calculator
Analyze single, 2-word, and 3-word keyword frequency and percentage density in articles.
Business Days Calculator
Calculate working days between two dates, excluding weekends and custom holidays.
Add or Subtract Days from Date
Add or subtract days, weeks, months, or years to find a future or past date.
Countdown Timer Online
Create live real-time countdowns to any event, holiday, launch, or milestone.
Unix Timestamp Converter
Convert Unix epoch seconds and milliseconds to human-readable date and time.
World Clock & Timezone Converter
Compare times across major global timezones (UTC, EST, PST, GMT, IST, JST).
Leap Year Calculator
Check if any year is a leap year and view upcoming leap years list.
Strong Password Generator
Generate uncrackable, cryptographically secure passwords with custom length and symbols.
Password Strength & Entropy Checker
Calculate password entropy in bits and estimate time required to crack by brute force.
Random Number Generator
Generate truly random numbers within any minimum and maximum range using browser CSPRNG.
UUID / GUID Generator (v4)
Generate standard RFC 4122 v4 UUIDs individually or in bulk up to 500.
CSS Gradient Generator
Design smooth linear and radial CSS gradients with angle controls and CSS code copy.
Color Palette Generator
Generate harmonious color palettes: Complementary, Analogous, Triadic, and Monochromatic.
Random String Generator
Generate random alphanumeric strings, API test keys, and secret tokens.
Tambola / Housie Number Caller
Interactive 1-90 Tambola & Housie board caller with speech synthesis, auto-call timer, prize tracker, and tickets.
Tic-Tac-Toe Game
Play classic Tic-Tac-Toe online vs AI (Easy, Medium, Unbeatable) or with a friend locally.
Spin the Wheel / Decision Wheel
Customizable spinning wheel for random decisions, giveaways, raffles, and party games.
3D Interactive Dice Roller
Roll 1 to 6 animated dice or RPG polyhedral dice (D4, D6, D8, D10, D12, D20, D100) with sound.
3D Coin Flipper (Heads or Tails)
Flip a virtual 3D coin for Heads or Tails with realistic metallic flips, streaks, and probability stats.
Memory Card Match Game
Exercise your brain with a fun flip-and-match memory puzzle with timer and move counters.