Free Online Calculators
& Converters

Calculate your crypto trading profits and losses with fees

Calculate compound interest growth over time

Calculate monthly mortgage payments and total interest

Calculate monthly car payments, total interest, and loan costs

Calculate how much house you can afford based on income and DTI

Calculate your Body Mass Index

Calculate optimal bedtime and wake times based on sleep cycles

Calculate calories burned during activities and exercises

Calculate tips and split bills

Calculate percentages, increases, and decreases

Convert units of length, weight, volume, and more

Calculate age from birthdate

Calculate discounted prices and savings

Calculate electricity costs for appliances and devices

Generate secure random passwords with customizable options

Count words, characters, sentences, and reading time

Generate QR codes for URLs, text, WiFi, and more

Calculate love compatibility between two names

Generate random names for characters, usernames, and more

Calculate your love compatibility with your partner

Test your typing speed and accuracy in WPM

Find out which famous character matches your personality

Discover your MBTI-style personality type with this comprehensive test

Test your IQ with pattern recognition and logic puzzles

Convert between meters, feet, inches, miles, and more

Analyze website performance and Core Web Vitals

Flip a virtual coin for quick decisions

Roll virtual dice with customizable sides

Generate HTML meta tags for better SEO

Preview how your page looks in Google search results

Convert text between uppercase, lowercase, and more

Compress images to reduce file size

Resize images to specific dimensions

Combine multiple PDF files into one

Split PDF into separate pages

Calculate voltage, current, or resistance using V=IR

Convert between wavelength and frequency for light and sound waves

Calculate speed, distance, or time from the other two values

Look up atomic masses and calculate molecular mass from formulas

Compare prices per unit to find the best deal when shopping

Calculate trip fuel costs based on distance and fuel efficiency

Split restaurant bills among friends with custom tip percentages

Create a countdown timer to any upcoming event or date

Convert your pet age to human years for dogs and cats

Compare the financial outcomes of renting versus buying a home

Calculate return on investment for real estate properties

Calculate total square footage and price per square foot