Menu

HomeOnline Calculators
Net Present Value (NPV) CalculatorCredit Card Payoff CalculatorLoan Interest CalculatorBoat Payment CalculatorTip CalculatorMortgage Payment Calculator
BMI CalculatorBra Size Calculator
Win Rate CalculatorBasic Statistics Calculator
Inequality SolverDecimal to Fraction CalculatorArea of a CircleCircumference CalculatorSurface Area CalculatorPerimeter CalculatorLaw of Sines Calculator
Voltage Drop Calculator
Date Difference CalculatorTime Difference CalculatorBasic CalculatorUnit Converter
Square Footage Calculator
Skip to main content

Area of a Circle

Calculate the area of a circle given its radius using A = πr².

Explore Other Calculators

Mathematics

Perimeter Calculator

Compute the perimeter for rectangles, squares, and simple isosceles triangles.

Explore
Finance

Loan Interest Calculator

Estimate your monthly loan payments and total interest cost.

Explore
Finance

Mortgage Payment Calculator

Estimate monthly mortgage payments and view an amortization schedule.

Explore