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Diameter to Area of Circle Calculator


Calculate Area of Circle
Diameter (ø) [?]
Area (A) [?]

Click save settings to reload page with unique web page address for bookmarking and sharing the current tool settings, or click flip tool to reverse the tool function with current settings

✕ clear settings

Switch tool with the current settings for diameter, and calculate circle circumference, circle radius, sphere volume or sphere surface area instead


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Contents

  • Related Tools
  • User Guide
    • Formula
      • Symbols
    • Diameter of Circle
    • Area of Circle

Related Tools

  • Calculate diameter of circle from area
  • Circle diameter to circumference calculator
  • Circle diameter to radius calculator
  • Convert an area to different units
  • Length and distance converter
  • Sphere diameter to volume calculator
  • Sphere diameter to surface area calculator

User Guide

This tool will calculate the area of a circle from the diameter, and will convert different measurement units for diameter and area.

Formula

The formula used to calculate circle area is:

A = π x (ø/2)2

Symbols

  • A = Circle area
  • π = Pi = 3.14159…
  • ø = Circle diameter

Diameter of Circle

Enter the diameter of a circle. The diameter of a circle is the length of a straight line drawn between two points on a circle where the line also passes through the centre of a circle, or any two points on the circle as long as they are exactly 180 degrees apart.

Area of Circle

This is the area contained within a circle with the specified diameter.

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Tool Sections

  • Area
  • Chemical Quantities
  • Circular Shapes
  • Density
  • Diameter & Radius
  • Energy & Power
  • Electrical & Electromagnetic
  • Flow
  • Force, Load & Torque
  • Length & Distance
  • Liquid Depth & Level
  • Mass & Weight
  • Movement & Motion
  • Pressure
  • Pricing & Quantities
  • Sensors & Instruments
  • Speed & Acceleration
  • Temperature & Heat
  • Time & Frequency
  • Travel & Transportation
  • Volumetric
  • Rectangular Shapes

Tool Feedback

Please provide feedback on using this Diameter to Area of Circle Calculator.

Product Selection Guides

  • Data Loggers
  • Differential Pressure Sensors
  • Digital Pressure Gauges
  • Digital Pressure Sensors
  • Digital Readouts
  • Hydrostatic Liquid Level Sensors
  • Millivolt Output Pressure Transducers
  • Pressure Transducers
  • Pressure Transmitters
  • Voltage Output Pressure Transducers

Application Selection Guides

  • Absolute Pressure
  • Differential Pressure
  • Dual Temperature and Pressure
  • Flush Diaphragm
  • High Frequency Response
  • Low Pressure Range
  • Overpressure Protection
  • Vacuum

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