Hemisphere Calculator

  • Enter the radius of the hemisphere.
  • Select the units (Centimeters, Meters, or Feet).
  • Click "Calculate" to compute the volume and surface area.
  • View the detailed calculations and explanations.
  • Click "Copy Results" to copy the results to the clipboard.
  • Click "Clear" to reset the inputs and results.


Surface Area:

Calculation Details Formulas Used:

Volume (V) = (2/3) * π * r^3

Surface Area (A) = 2 * π * r^2

Step-by-Step Calculation:
Calculation History
    '); // Add calculation to history var historyItem = "
  • Radius: " + radius + " " + units + ", Volume: " + volume.toFixed(2) + " " + (units === "m" ? "m³" : (units === "cm" ? "ml" : "ft³")) + ", Surface Area: " + surfaceArea.toFixed(2) + " " + (units === "m" ? "m²" : (units === "cm" ? "cm²" : "ft²")) + "
  • "; $("#calculationHistory").append(historyItem); } else { alert("Please enter a valid radius."); } }); // Clear results $("#clear").click(function() { $("#radius").val(""); $("#volumeResult").text(""); $("#volumeUnit").text(""); $("#surfaceAreaResult").text(""); $("#surfaceAreaUnit").text(""); $("#calculationDetails").html(""); // Clear calculation details $("#volumeResult, #surfaceAreaResult").removeClass("fadeIn"); // Remove animation class $("#hemisphereImage").html(""); // Clear the 3D representation }); // Copy results to clipboard $("#copy").click(function() { var volume = $("#volumeResult").text(); var volumeUnit = $("#volumeUnit").text(); var surfaceArea = $("#surfaceAreaResult").text(); var surfaceAreaUnit = $("#surfaceAreaUnit").text(); var resultsText = "Volume: " + volume + " " + volumeUnit + "\nSurface Area: " + surfaceArea + " " + surfaceAreaUnit; navigator.clipboard.writeText(resultsText).then(function() { alert("Results copied to clipboard!"); }); });

    The Hemisphere Calculator is a specialized tool designed to calculate various properties of a hemispherical shape. A hemisphere is a geometric figure that represents half of a sphere. This tool is crucial in numerous fields such as geometry, physics, engineering, and architecture, as it simplifies the process of calculating complex measurements associated with hemispheres.

    Concept of a Hemisphere

    Definition and Characteristics

    A hemisphere is defined as one half of a sphere, cut by a plane passing through the center of the sphere. It has a flat circular face (base) and a curved surface. The point at the top of the hemisphere, directly opposite the flat face, is known as the apex.

    Applications in Real Life

    Hemispheres can be observed in various real-world objects and phenomena. For instance, the Earth can be divided into the Northern and Southern Hemispheres. In architecture, domes are hemispherical. Understanding the properties of a hemisphere is vital in accurately modeling and constructing such structures.


    Calculations Related to Hemispheres

    Surface Area

    The surface area of a hemisphere includes the curved surface area and the base area. The formulas are:

    1. Curved Surface Area (CSA): 2 * π * r^2
    2. Total Surface Area (TSA): 3 * π * r^2, where ‘r’ is the radius of the hemisphere.


    The volume of a hemisphere is given by the formula:

    1. Volume (V): (2/3) * π * r^3

    Diameter and Radius

    The diameter is twice the radius, and it’s the longest straight line that can be drawn inside the hemisphere. The radius is a segment from the center of the base to any point on the circumference.

    Benefits of Hemisphere Calculator


    Manual calculations, especially for complex formulas, are prone to errors. A hemisphere calculator ensures high accuracy, which is crucial in technical and scientific applications.


    Calculating the properties of hemispheres can be time-consuming. The tool automates these calculations, significantly reducing the time and effort required.


    The Hemisphere Calculator can be used in various fields, including education, engineering, and design, making it a versatile tool for professionals and students alike.

    Interesting Facts About Hemispheres

    Natural Occurrences

    The shape of the hemisphere is naturally occurring in phenomena like bubbles and certain types of fruit. This natural optimization is mirrored in man-made designs.

    Architectural Significance

    Hemispherical structures are known for their ability to evenly distribute stress, making them stable and aesthetically pleasing. This is why they are commonly used in domes and arches in architecture.

    Earth’s Hemispheres

    The Earth is divided into the Northern and Southern Hemispheres by the Equator. Each hemisphere has distinct climatic patterns and biodiversity, showcasing the diversity of our planet.


    The Hemisphere Calculator is an indispensable tool in the realm of geometry and beyond. Its ability to provide quick, accurate, and efficient calculations makes it a valuable asset for professionals, educators, and students. Understanding the properties and applications of hemispheres not only facilitates technical calculations but also enriches our appreciation for this geometric shape in nature and man-made structures.


    To further explore the concept and applications of hemispheres and the use of the Hemisphere Calculator, consult the following scholarly sources:

    1. “Principles of Geometry” by H.S.M. Coxeter: This book provides a comprehensive overview of geometric principles, including the properties of hemispheres.
    2. “The Sphere and Hemisphere in Architecture” by John Chilton: This text explores the architectural significance of hemispherical shapes and their structural benefits.
    3. “Mathematical Methods for Physical Sciences” by Mary L. Boas: Boas’s book is an excellent resource for understanding the mathematical calculations related to various geometric shapes, including hemispheres.

    Last Updated : 12 February, 2024

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