Calculator Directory
Financial Calculators
Calculators for mortgages, loans, leases, savings, investments, retirement, and other financial decisions.
Mortgage Calculators
Estimate mortgage payments, home equity, affordability, qualification, and rent-versus-buy comparisons.
Use this home equity calculator to estimate how much equity you may have in your home after subtracting mortgage and loan balances. Enter your home’s current value and any outstanding balances to see estimated available equity at 80%, 100%, and 125% of home value.
This calculator allows you to calculate the amount you can afford to pay for a mortgage.
The Mortgage Payment Calculator allows you to calculate monthly payments, average monthly interest, total interest, and total payment.
This calculator will try to calculate what kind of income lenders will expect you to be making to qualify for the specific values.
This calculator allows you to compare renting versus buying by entering how much you want to spend a month and how much down you would put into your house.
This calculator allows you to calculate monthly payment, average monthly interest, total interest, and total payment of your mortgage.
Loan Calculators
Calculate loan payments, interest, balances, and borrowing costs.
Easily calculate the payments and interest amount on a loan based on the principal amount, annual interest and the number of payments with the free Loan calculator.
Lease Calculators
Estimate lease payments and compare lease terms.
This calculator lets you calculate your estimated lease payments.
Investment Calculators
Explore investment returns, stocks, bonds, and related financial choices.
The purpose of this calculator is to provide calculations and details for bond valuation problems. It is assumed that all bonds pay interest semi-annually. Future versions of this calculator will allow for different interest frequency.
Deciding when to buy and sell stocks is difficult enough - figuring the profit or loss from that trade should not have to be. Just enter the number of shares, your purchase price, your selling price, and the commission fees for the trade and this calculator instantly figures your resulting profit or loss after commission fees.
How much do I keep in stocks and bonds?
Retirement Calculators
Estimate retirement savings, tax-deferred contributions, and future withdrawals.
Find out how much to put away tax deferred to get a certain amount of money in the future, and how much you could expect to draw out of that money. Just put in some numbers to see!
Savings Calculators
Estimate savings growth, account balances, and time needed to reach financial goals.
This calculator allows you to calculate how long it will take until you reach your desired account balance.
Enter how much you can afford to save each month, how long you can save this amount, and the interest rate you can get on your savings and this calculator will display your total savings.
Selling ad banners has just got easier! Just enter two of the three fields of information, such as the total cost, CPM (cost per thousand impressions), and exposures (number of ads shown), and the calculator will solve the last field for you.
Compare two fixed-rate loan scenarios, including monthly payments, total interest, total cost, closing costs, and a simple closing-cost recovery estimate.
Enter how much you want to spend each month, an interest rate, and a loan amount and the calculator tells you how long it will take you to pay it off!
This calculator allows you to calculate the total amount of money you have, just enter the number of bills and coins.
Math Calculators
Calculators for percentages, equations, geometry, trigonometry, prime numbers, and other math problems.
Enter the adjacent and hypotenuse angle values and this calculator will solve the cosine angle for you.
Just enter a math expression and this calculator will evaluate the expression for you.
The Length Adding calculator allows you to add feet and inches.
Use this fractions calculator for fraction and decimal arithmetic with a running calculation tape.
Use this advanced scientific calculator for arithmetic, trigonometry, statistics, matrices, constants, and complex mathematical expressions.
The percentage calculator allows you to find out what the amount, the percentage, the percent amount, the percent increase or the percent decrease is, if you know any of the two.
Online Perches to Square Meters and Square Feet Calculator.
Enter a number and this calculator will instantly tell you if it is a prime number or not.
One of the most useful formulas of geometry, the Pythagorean Theorem, can be applied to the numbers you enter in this simple calculator! Just enter A and B and the calculator solves for C.
A calculator to figure the square root of the number you enter. Just enter the coefficients for the Ax^2 + Bx + C = 0 equation and the calculator will output the solutions (if they are not imaginary!). Neat!
Use this scientific tape calculator for arithmetic, trigonometry, logarithms, powers, roots, fractions, and other scientific calculations.
Enter the opposite and hypotenuse angle values and this calculator will solve the sine angle for you. Neat!
Use this standard tape calculator for everyday arithmetic with a running calculation tape.
This calculator allows you to create a special table where each data value is split into a stem (the first digit or digits) and a leaf (usually the last digit).
This calculator will solve the tangent angle for you, just enter the opposite and adjacent angle values and press Calculate.
Conversion Calculators
Convert currencies, temperatures, measurements, data sizes, and other units.
Currency calculator allows you to convert between currencies. Exchange between dollars, pounds, euro, yen, yuan, and many more.
This calculator allows you to calculate data size in bits, nibbles, bytes, kilobytes, megabytes, gigabytes, and terabytes.
The temperature calculator allows you to convert temperature degrees between Celsius, Fahrenheit, Kelvin, Rankine, Delisle, Newton, Réaumur and Rømer. Enter a value in any field to see the other values.
Health & Fitness Calculators
Calculators for body measurements, calories, pregnancy dates, and other health-related estimates.
This calculator allows you to calculate blood alcohol content (BAC) based on the quantity of beverages consumed, the alcohol percentage in each drink, the weight of the person, and the time spent consuming the drink.
This calculator allows you to calculate your Body Mass Index (BMI). Body Mass Index (BMI) is a person's weight in kilograms divided by the square of height in meters. Find out your BMI and what it means for your health.
This calculator allows you to figure out how many calories you have burned.
This calculator allows you to calculate your due date, conception date, and fetal age.
We stay home! To understand why, adjust the 'Social distancing factor' slider to see the effect and impact of social distancing.
Automotive Calculators
Calculators for fuel economy, speed, horsepower, vehicles, boats, and other automotive-related estimates.
This calculator allows you to calculate a bass fishing boat's speed.
This calculator allows you to find out your vehicle's horsepower.
This calculator allows you to compute the miles per gallon of your car via the miles travelled and the number of gallons used. Also, if you enter the cost per gallon and how many miles you drive a day, it will estimate your monthly and yearly gas expenses.
This calculator allows you to calculate miles per hour.
Sports & Hobbies Calculators
Calculators for vehicles, sports, hobbies, speed, power, and related activities.
This calculator allows you to figure armor penetration.
Computing Calculators
Calculators for data, downloads, computer storage, and other computing tasks.
This calculator allows you to estimate how long it will take to download a file at any of a number of modem speeds. Try it out!
Fun Calculators
Lighthearted calculators for dates, compatibility, signs, and other fun uses.
Find out your Western Sun Sign, and your Eastern or Chinese Sign.
Use this calculator to find out how many days are left until Christmas.
Are you in love and want to know if it could be a good match? Calculate your chances of a successful relationship based on your first names with the free Love calculator!
To find out what the chances for you and your dream partner are, just fill in your and his or her Info and click Calculate.
Have you ever wondered if your phone number has a memorable text equivalent, like 555-HELP? Just type it in and this calculator will generate all possible combinations, just pick your favourite one and tell the world how to reach you.
Other Calculators
Useful calculators that do not fit neatly into the main categories.
This useful calculator will tell you the degrees, Nautical Miles, Statute Miles, and Kilometers between your originating and destination airports. It has a built-in database of over 150 of the most travelled airports!
Ever had to work with another person to complete a task? This calculator will tell you how long it would take two people to complete the task if you know how long it would take each person to complete the task individually.
This calculator allows you to find the approximate room size you will need depending on your room setup and arrangement.
Wind Chill is a mysterious and often misunderstood phenomenon. This calculator describes what the wind chill factor really is and offers a form to calculate the wind chill factor when given the air temperature and wind speed.