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This tool helps you determine the correct amount of federal income tax to withhold from your paycheck based on your financial situation and filing status.

Estimate your federal income tax liability based on your filing status and income.

Estimate your ability to claim foreign tax credits (Form 1116) and potential carryovers.

Quickly calculate sales tax for any amount and tax rate.

Plan your credit card payments to pay off your balance faster and save on interest.

Project the future growth of your investments with compound interest.

Calculate your monthly payments and total interest for any type of loan.

Estimate your monthly mortgage payment and view a full amortization schedule.

Convert your annual salary to an hourly rate including benefits and overtime.

Plan and track your savings goals to see how your money can grow.

Easily calculate tips and split bills among friends.

A simple online calculator for basic arithmetic operations.

Analyze data sets by uploading a CSV to calculate key statistics.

Find all factors of a given number quickly and easily.

Perform addition, subtraction, multiplication, and division with fractions.

Calculate the greatest common factor (also known as Greatest Common Divisor or GCD) of two or more numbers.

Calculate your Grade Point Average for the semester or overall.

Determine your course grade or the score you need on a final exam.

Calculate the lowest common multiple (also known as Least Common Multiple or LCM) of two or more numbers.

Calculate percentages, percentage increases/decreases, and find the whole from a part.

Factor numbers into their prime components.

Generate random numbers within a specified range.

Convert Arabic numbers (including decimals) to Roman numerals and back.

Convert between various units of measurement for length, weight, volume, and more.

An educational Minesweeper-style game to test your logic, probability, and management skills.

Test and improve your typing speed and accuracy with this fun typing game.

A strategic business simulation game based on Chess. Learn economic concepts while competing against AI or friends.

A simple slot machine game that lets you spin the reels with a single click for instant fun.

Calculate your exact age in years, months, and days based on your birthdate.

Calculate your Body Mass Index to assess your weight status.

Determine the statistical expected value of a lottery ticket.

Generate random lottery numbers for various popular lottery games.

Set a custom alarm to go off right from your browser.

A simple, accurate stopwatch to time any activity.

Set a countdown timer for any task or activity.

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