Percentage calculator
Calculate percentages online, including percent of a number, percentage increase, and percentage decrease.
Free web browser tools
Calculator
Enter your values and get an immediate result with the relevant totals, estimates, or breakdowns.
Age calculator
Calculate exact age from date of birth in years, months, days, and more with a simple online age calculator.
BMI calculator
Calculate your BMI online using height and weight. Get body mass index results with metric and imperial units.
Mortgage calculator
Estimate monthly mortgage payments with loan amount, interest rate, term, deposit, taxes, and fees.
Loan calculator
Calculate loan payments, total interest, and repayment schedules for personal loans and other borrowing.
Tip calculator
Calculate tips and split bills online. Enter bill amount, tip percentage, and number of people.
Date / days-between calculator
Calculate the absolute number of calendar days between two dates online, with equivalent weeks and approximate months.
Compound interest calculator
Calculate compound interest, investment growth, deposits, and future value with an easy online calculator.
Hours / time calculator
Calculate hours and minutes, add or subtract time, and find time between two times online.
Scientific calculator
Use a free online scientific calculator for advanced math, trigonometry, exponents, roots, and more.
Calorie calculator
Estimate daily calorie needs based on age, height, weight, activity level, and goals.
Due date / pregnancy calculator
Estimate a pregnancy due date from the first day of your last menstrual period and see the estimated current gestational age. Uses the standard 280-day calculation.
GPA calculator
Calculate a credit-weighted GPA online from course grades and credit hours using a standard 4.0 scale. Add or remove courses and see total credits instantly.
Salary / paycheck calculator
Estimate take-home pay from salary, tax, deductions, and pay frequency with an online paycheck calculator.
Sales tax / VAT calculator
Calculate sales tax or VAT online. Add tax to a price or work backwards from a tax-inclusive total.
Fraction calculator
Calculate fractions online. Add, subtract, multiply, divide, simplify, and convert fractions easily.
Square footage calculator
Calculate square footage and area online for rooms, walls, floors, and other spaces.
Discount calculator
Calculate discounts, sale prices, savings, and final price after a percentage off.
Percentage increase/decrease
Calculate percentage increase, percentage decrease, and percent change between two numbers.
Grade / test score calculator
Calculate test grades, percentages, and final scores from points earned and total points possible.
Calculator FAQs
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Tags group tools by shared traits such as file converter, in browser, or privacy friendly so you can filter the directory by feature.