All Tools
Browse our complete collection of free online tools and calculators
Math Calculators
View allPercentage Calculator
Calculate percentages, percentage increase/decrease, and more
College GPA Calculator
Calculate your college GPA by entering courses, credit hours, and grades on the 4.0 scale
High School GPA Calculator
Calculate weighted and unweighted high school GPA with support for Regular, Honors, and AP/IB courses
Cumulative GPA Calculator
Combine multiple semesters to calculate your overall cumulative GPA weighted by credit hours
Scientific Calculator
Full-featured scientific calculator with trigonometry, logarithms, exponents, and advanced math functions
Fraction Calculator
Add, subtract, multiply, and divide fractions with step-by-step solutions and simplification
Square Root Calculator
Calculate square roots, cube roots, and nth roots with perfect square detection
Average Calculator
Calculate mean, median, mode, and range from any set of numbers for statistics
Ratio Calculator
Solve ratios and proportions, simplify ratios, and scale values proportionally
Standard Deviation Calculator
Calculate standard deviation, variance, and statistics for population and sample data
Grade Calculator
Calculate weighted grades and find what score you need on your final exam
Finance Tools
View allMortgage Calculator
Calculate monthly mortgage payments, total interest, and view amortization schedules
Loan Calculator
Calculate loan payments, interest, and total cost
Compound Interest Calculator
See how your money grows over time with compound interest, monthly contributions, and various compounding frequencies
ROI Calculator
Calculate your Return on Investment including basic ROI, annualized ROI, and net profit
Savings Goal Calculator
Find out how much you need to save monthly to reach your financial goal with compound interest
Tip Calculator
Calculate tips and split bills easily. Perfect for restaurants, delivery, and service tipping
Discount Calculator
Calculate sale prices, savings amount, and original prices from discounts and percentages
Salary Calculator
Convert salary between hourly, weekly, monthly, and annual rates. Estimate take-home pay
EMI Calculator
Calculate Equated Monthly Installments for home loans, car loans, and personal loans with amortization schedule
Tax Calculator
Estimate federal income tax, Social Security, Medicare, and take-home pay based on 2024 US tax brackets
Health & Fitness
View allBMI Calculator
Calculate your Body Mass Index and healthy weight range
Calorie Calculator
Calculate daily calorie needs based on age, weight, height, activity level, and fitness goals
BMR Calculator
Calculate your Basal Metabolic Rate to understand how many calories your body burns at rest
Body Fat Calculator
Estimate your body fat percentage using multiple methods including Navy, BMI, and measurements
Ideal Weight Calculator
Find your ideal body weight range based on height, gender, and different calculation methods
Due Date Calculator
Calculate your pregnancy due date and track important milestones throughout your pregnancy
Sleep Calculator
Find the best times to wake up or go to sleep based on sleep cycles for optimal rest
TDEE Calculator
Calculate your Total Daily Energy Expenditure based on BMR and activity level for weight management
Macro Calculator
Calculate optimal daily protein, carbohydrates, and fat intake based on your fitness goals
Water Intake Calculator
Calculate how much water you should drink daily based on your weight and activity level
Unit Converters
View allText Tools
View allWord Counter
Count words, characters, sentences, and paragraphs. Estimate reading and speaking time
Character Counter
Count characters, letters, numbers, and line length with platform-friendly text limit checks
Text Case Converter
Convert text between uppercase, lowercase, title case, sentence case, and more
Lorem Ipsum Generator
Generate placeholder text for design mockups, websites, and documents
Slug Generator
Generate SEO-friendly URL slugs from titles and bulk text with normalization controls
Date & Time
View allAge Calculator
Calculate your exact age in years, months, and days
Date Calculator
Calculate the number of days between dates, add or subtract days from a date
Time Zone Converter
Convert times between different time zones worldwide. Perfect for scheduling international meetings
Countdown Timer
Create countdown timers for events, deadlines, holidays, and special occasions
Random Generators
View allDeveloper Tools
View allJSON Formatter
Format, validate, and beautify JSON data. Minify or prettify with syntax highlighting
JSON Validator
Validate JSON syntax with line-aware error hints, then format or minify payloads instantly
Base64 Encoder/Decoder
Encode text to Base64 or decode Base64 strings. Supports text and file encoding
UUID Generator
Generate unique UUIDs (v1, v4) for databases, APIs, and application development
Color Converter
Convert colors between HEX, RGB, HSL, and other formats. Includes color picker
URL Encoder/Decoder
Encode or decode URLs and query strings. Convert special characters to percent-encoded format
MD5 Hash Generator
Generate MD5 hash values for text strings. Compare hashes and verify data integrity
Regex Tester
Test and debug regular expressions with real-time matching and highlighting
PDF Tools
View allPDF Compressor
Compress PDF files to reduce file size while maintaining quality. Perfect for email attachments and uploads
PDF Merger
Merge multiple PDF files into a single document. Combine PDFs quickly and easily in your browser
PDF Splitter
Split PDF files into separate pages or extract specific pages from a PDF document
PDF to JPG Converter
Convert PDF pages to high-quality JPG images. Extract images from PDF files easily
Image Tools
View allImage Compressor
Compress images to reduce file size without losing quality. Supports JPG, PNG, and WebP formats
Image Resizer
Resize images to any dimension while maintaining aspect ratio. Perfect for social media and web
Image Cropper
Crop images with pixel-perfect controls and aspect ratio presets using secure browser processing
Image to PNG Converter
Convert JPG, WEBP, GIF, and BMP images to PNG format with browser-based processing
Image to JPG Converter
Convert PNG, WEBP, GIF, and BMP images to JPG format with quality control
WEBP to PNG Converter
Convert WEBP images to PNG for compatibility and transparency workflows
PNG to WEBP Converter
Convert PNG files to WEBP format to reduce image size while preserving quality
Image to Base64 Converter
Encode images as Base64 Data URIs for inline HTML, CSS, and API payloads
QR Code Generator
Create QR codes for URLs, text, and contact data with custom size, colors, and export formats