Free Online Calculators
Use our free online calculators for everyday math, finance, health, and education. Whether you need to figure out a percentage, estimate monthly loan payments, or check your BMI, these tools deliver instant, accurate results. Every calculator runs directly in your browser — your data stays private and nothing is sent to a server.
All Calculators
Percentage Calculator
Calculate percentages, increases, decreases, and more.
BMI Calculator
Check your Body Mass Index with metric or imperial units.
Age Calculator
Calculate exact age in years, months, and days.
Loan Calculator
Calculate monthly payments, interest, and amortization.
Tip Calculator
Calculate tips and split the bill between people.
Discount Calculator
Calculate sale price and savings from any discount.
GPA Calculator
Calculate your grade point average on a 4.0 scale.
Calorie Calculator
Calculate daily caloric needs based on your profile.
Compound Interest Calculator
See how your investments grow with compound interest.
Salary Calculator
Convert between hourly, daily, weekly, and annual salary.