Free Online Calculators
These calculators cover savings, loans and everyday math. Enter your numbers into any calculator here and get an instant answer with a plain explanation of how it was worked out.
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Standard Calculator
A clean everyday calculator with keyboard support and a running history.
Scientific Calculator
Trigonometry, logarithms, powers, roots and memory, in degrees or radians.
Savings Goal Calculator
Work out how much to put aside each month, or what your savings will grow to.
Compound Interest Calculator
See how an investment grows over time with compounding and regular contributions.
Loan Calculator
Work out monthly payments, total interest and the full repayment schedule.
Tip & Bill Split Calculator
Work out the tip, the total, and exactly what each person owes.
Percentage Calculator
Percent of a number, increase and decrease, and the difference between two values.
BMI Calculator
Calculate body mass index in metric or imperial units, with a healthy range for your height.
Age Calculator
Find your exact age, days until your next birthday, and the weekday you were born.
Currency Converter
Convert between world currencies using up-to-date exchange rates.
Mortgage Calculator
Estimate a full monthly mortgage payment including tax, insurance, HOA and PMI.
Sales Tax Calculator
Add sales tax to a price, or work out the tax already included in a total.
GPA Calculator
Enter your courses, credits and grades to get your GPA on the 4.0 scale.
Calorie Calculator
Work out your daily calorie needs and targets for losing or gaining weight.
Hours Calculator
Add up worked hours from start and end times, minus breaks, with decimal totals and pay.
Fraction Calculator
Add, subtract, multiply or divide fractions and mixed numbers, reduced automatically.
Discount Calculator
Find the sale price and total saving, including stacked discounts and tax.
Retirement Calculator
Project your retirement savings with contributions, growth and inflation adjusted.
ROI Calculator
Calculate return on investment, net profit and annualized return.
Body Fat Calculator
Estimate body fat percentage, fat mass and lean mass from tape measurements.
Date Difference Calculator
Count the days between two dates, or add and subtract days from a date.
Inflation Calculator
Project future prices and the eroding purchasing power of cash.
Fuel Cost Calculator
Estimate how much fuel a trip needs and what it will cost.
Final Grade Calculator
Work out the score you need on the final to hit your target grade.
Unit Price Calculator
Compare products by price per unit to find the best value.