All Tools
Percentage Calculator
Calculate percentages easily. Find what percent of a number, percentage change, and more.
Math & CalculatorsAge Calculator
Calculate your exact age in years, months, and days from your date of birth.
Math & CalculatorsPassword Generator
Generate strong, secure passwords instantly. Customize length and character types.
GeneratorsWord Counter
Count words, characters, sentences, and paragraphs. Estimate reading and speaking time.
Text ToolsUnit Converter
Convert between units of length, weight, temperature, volume, speed, and more.
ConvertersDate Calculator
Calculate the number of days between two dates or add/subtract days from a date.
Math & CalculatorsTip Calculator
Calculate tip amount and split the bill among friends easily.
Math & CalculatorsHex / Binary / Decimal Converter
Convert numbers between hexadecimal, binary, decimal, and octal formats.
Developer ToolsTDEE Calculator
Calculate your Total Daily Energy Expenditure (TDEE) and daily calorie needs based on your activity level.
Health & FitnessLoan Calculator
Calculate monthly payments, total interest, and amortization schedule for any loan.
Math & CalculatorsJSON Formatter
Format, validate, and minify JSON data with syntax highlighting.
Developer ToolsGPA Calculator
Calculate your Grade Point Average (GPA) by entering courses, grades, and credit hours.
Math & CalculatorsBMI Calculator
Calculate your Body Mass Index (BMI) based on height and weight.
Health & FitnessScientific Calculator
Advanced calculator with trigonometric, logarithmic, and exponential functions.
Math & CalculatorsMortgage Calculator
Calculate monthly mortgage payments, total interest, and total cost.
FinanceCalorie Calculator
Calculate your daily calorie needs based on your goals and activity level.
Health & FitnessCompound Interest Calculator
Calculate compound interest with regular contributions over time.
FinanceBody Fat Calculator
Estimate your body fat percentage using the US Navy method.
Health & FitnessSalary Calculator
Convert your salary between hourly, daily, weekly, biweekly, monthly, and annual.
FinanceBMR Calculator
Calculate your Basal Metabolic Rate — the calories your body burns at rest.
Health & FitnessPaycheck Calculator
Estimate your take-home pay after taxes based on your gross salary.
FinanceDue Date Calculator
Calculate your pregnancy due date based on your last menstrual period.
Health & FitnessInflation Calculator
Calculate the impact of inflation on purchasing power over time.
FinanceStandard Deviation Calculator
Calculate standard deviation, variance, mean, and other statistics for a data set.
Math & CalculatorsFraction Calculator
Add, subtract, multiply, and divide fractions with step-by-step results.
Math & CalculatorsIdeal Weight Calculator
Find your ideal weight range using multiple scientific formulas.
Health & FitnessMacro Calculator
Calculate your daily macronutrient needs — protein, carbs, and fat in grams.
Health & FitnessOvulation Calculator
Estimate your ovulation date and fertile window based on your menstrual cycle.
Health & FitnessQuadratic Equation Solver
Solve quadratic equations (ax² + bx + c = 0) and find roots, vertex, and discriminant.
Math & CalculatorsRandom Number Generator
Generate random numbers within a range with customizable options.
GeneratorsSales Tax Calculator
Calculate sales tax amount and total price, or reverse-calculate from total.
FinanceDiscount Calculator
Calculate discount amount, final price, and savings. Supports double discounts.
FinanceJPG to PDF Converter
Convert JPG images to PDF documents for free, online, directly in your browser.
ConvertersPNG to PDF Converter
Convert PNG images to PDF documents for free, online, directly in your browser.
ConvertersWebP to PNG Converter
Convert WebP images to PNG format for free, online, in your browser.
ConvertersWebP to JPG Converter
Convert WebP images to JPG format for free, online, in your browser.
ConvertersPDF Merge
Merge multiple PDF files into one document for free, online, in your browser.
ConvertersPDF Split
Split PDF files into separate pages or custom ranges for free, online, in your browser.
ConvertersHEIC to JPG Converter
Convert HEIC/HEIF images to JPG format for free, online, in your browser.
ConvertersPNG to JPG Converter
Convert PNG images to JPG format for free, online, in your browser.
ConvertersJPG to PNG Converter
Convert JPG images to PNG format for free, online, in your browser.
ConvertersJPG to WebP Converter
Convert JPG images to WebP format for free, online, in your browser.
ConvertersPNG to WebP Converter
Convert PNG images to WebP format for free, online, in your browser.
ConvertersImage Compressor
Compress images to reduce file size for free, online, in your browser.
ConvertersSVG to PNG Converter
Convert SVG vector images to PNG format for free, online, in your browser.
ConvertersAVIF to JPG Converter
Convert AVIF images to JPG format for free, online, in your browser.
ConvertersImage Resizer
Resize images to custom dimensions for free, online, in your browser.
ConvertersBase64 Encoder / Decoder
Encode text to Base64 or decode Base64 to text for free, online, in your browser.
Developer ToolsCSV to JSON Converter
Convert CSV data to JSON format for free, online, in your browser.
Developer ToolsJSON to CSV Converter
Convert JSON data to CSV format for free, online, in your browser.
Developer ToolsMarkdown to HTML Converter
Convert Markdown text to HTML for free, online, in your browser.
Developer ToolsXML to JSON Converter
Convert XML data to JSON format for free, online, in your browser.
Developer ToolsGrade Calculator
Calculate weighted grade averages and determine what score you need on your final exam.
Math & CalculatorsText Case Converter
Convert text between UPPER CASE, lower case, Title Case, camelCase, snake_case, and more.
Text ToolsURL Encoder / Decoder
Encode or decode URL components. Converts special characters to percent-encoded format.
Developer ToolsUUID Generator
Generate random UUID v4 identifiers. Create single or bulk UUIDs with one click.
Developer ToolsHash Generator
Generate SHA-1, SHA-256, and SHA-512 hashes from text input. All processing happens in your browser.
Developer ToolsUnix Timestamp Converter
Convert between Unix timestamps and human-readable dates. View the current timestamp in real-time.
Developer ToolsColor Converter
Convert colors between HEX, RGB, and HSL formats with a live preview.
Developer ToolsAspect Ratio Calculator
Calculate aspect ratios from dimensions or find missing dimensions based on a ratio.
Math & CalculatorsRoman Numeral Converter
Convert between Arabic numbers and Roman numerals. Supports values from 1 to 3,999.
Math & CalculatorsReadability Checker
Analyze text readability with Flesch-Kincaid scores, grade level, and reading difficulty metrics.
Text ToolsCSS Gradient Generator
Create beautiful CSS gradients with a visual editor. Supports linear, radial, and conic gradients.
Developer ToolsCSS Box Shadow Generator
Design box shadows visually with sliders and get the CSS code instantly.
Developer ToolsCSS Border Radius Generator
Generate CSS border-radius values with a visual editor for all four corners.
Developer ToolsDiff Checker
Compare two texts side by side and highlight the differences between them.
Text ToolsFuel Cost Calculator
Calculate the fuel cost for your trip based on distance, fuel efficiency, and gas price.
FinanceElectricity Cost Calculator
Estimate your electricity costs based on appliance wattage, usage hours, and electricity rates.
FinanceQR Code Reader
Upload an image containing a QR code to decode its content instantly.
GeneratorsColor Palette from Image
Extract the dominant color palette from any image. Get HEX codes for each color.
Developer ToolsMarkdown Editor
Write Markdown with a live HTML preview. Includes a toolbar for common formatting.
Developer ToolsSleep Calculator
Find the best time to sleep or wake up based on 90-minute sleep cycles.
Health & FitnessAPY Calculator
Calculate Annual Percentage Yield and compare compounding frequencies.
FinanceRetirement Calculator
Project your retirement savings based on contributions and expected returns.
FinanceROI Calculator
Calculate Return on Investment, annualized ROI, and net profit.
FinanceSquare Footage Calculator
Calculate the area of rooms and estimate materials needed for home projects.
Home & DIYConcrete Calculator
Calculate how much concrete you need in cubic yards, meters, and number of bags.
Home & DIYPace Calculator
Calculate your running pace, speed, and race split times.
Health & FitnessProtein Calculator
Calculate your daily protein needs based on weight, activity, and goals.
Health & FitnessWater Intake Calculator
Calculate your recommended daily water intake based on weight and activity.
Health & FitnessMargin Calculator
Calculate profit margin, markup percentage, and selling price.
FinancePaint Calculator
Calculate how much paint you need for a room based on wall dimensions.
Home & DIYCar Loan Calculator
Calculate monthly car payments, total interest, and total cost of your auto loan.
FinanceCalorie Deficit Calculator
Calculate the daily calorie deficit needed to reach your target weight.
Health & FitnessDog Age Calculator
Convert your dog's age to human years based on breed size.
Math & CalculatorsProbability Calculator
Calculate probability for single events, combined events, and permutations/combinations.
Math & CalculatorsAir Fryer Calculator
Convert oven recipes to air fryer — adjust temperature and cooking time.
ConvertersSavings Goal Calculator
Calculate how much you need to save monthly to reach your financial goal.
FinanceHeart Rate Zone Calculator
Calculate your heart rate training zones based on age and resting heart rate.
Health & FitnessFlooring Calculator
Calculate how many tiles or planks you need for your floor, including waste.
Home & DIYTime Zone Converter
Convert time between different time zones around the world.
ConvertersRegex Tester
Test regular expressions in real-time with match highlighting, flag options, and common pattern presets.
Developer ToolsJWT Decoder
Decode JWT tokens to view header, payload, and signature. Check expiration status. 100% client-side.
Developer ToolsSQL Formatter
Format and beautify SQL queries with customizable indentation and keyword casing options.
Developer ToolsCron Expression Generator
Build cron expressions visually with real-time preview of next execution times.
Developer ToolsJavaScript Beautifier
Beautify or minify JavaScript and TypeScript code with customizable formatting options.
Developer ToolsHTML Formatter
Format and beautify HTML code with proper indentation and structure.
Developer ToolsCooking Unit Converter
Convert cooking measurements between cups, tablespoons, teaspoons, ml, oz, grams, and more with ingredient-specific densities.
ConvertersShoe Size Converter
Convert shoe sizes between US, UK, EU, and CM/JP systems for men, women, and kids.
ConvertersPomodoro Timer
Boost productivity with the Pomodoro Technique — 25-minute focused work sessions with short breaks.
Generators