Pevlika

Circle Calculator

Area, circumference and diameter from the radius.

Runs in your browser — nothing is uploaded

—

Formulas

A = π r² · C = 2 π r · d = 2 r

How to use Circle Calculator

  1. Choose a shape.
  2. Enter its dimensions in any unit.
  3. Read the area, perimeter or volume.
Area & Volume CalculatorArea, perimeter, volume and surface area of common 2D and 3D shapes. Triangle CalculatorSolve any triangle from sides and angles — area, angles, perimeter. Unit ConverterConvert length, weight, temperature, volume, area, speed, time, data and more. Scientific CalculatorFull scientific calculator with trig, logs, powers, roots, memory and history.