Triangular Prism Calculator

  • Enter the values for the base length, height, and length of the triangular prism.
  • Select the desired units for each input (millimeters, centimeters, meters, kilometers, inches, feet, or yards).
  • Click the "Calculate" button to perform the calculations.
  • View the results for the volume, surface area, and lateral surface area in the selected units.
  • A graphical representation of the results is displayed in the chart.
  • Your calculation history is recorded below.
  • Use the "Clear Results" button to reset the form and chart.
  • Click "Copy Results" to copy the calculated results to the clipboard.


Surface Area:

Lateral Surface Area:

Graphical Representation:
Calculation History:

    What is a Triangular Prism Calculator?

    A triangular prism calculator is a digital tool designed to efficiently calculate various measurements of a triangular prism. It eliminates the need for manual calculations and reduces the risk of errors, making it an invaluable tool for students, engineers, architects, and anyone working with 3D shapes.

    Concepts and Formulae

    Understanding the Triangular Prism

    • A triangular prism is a 3D polyhedron with:
      • Five faces: two congruent triangles (bases) and three rectangular faces (lateral sides).
      • Nine edges: three edges for each triangular base and three connecting the bases.
      • Six vertices: three for each triangular base.

    Essential Formulae

    1. Volume:
      • V = (1/2) * B * h * L
        • B = base area of the triangle
        • h = height of the triangle
        • L = length of the prism
    2. Total Surface Area:
      • TSA = 2B + Ph
        • P = perimeter of the triangle
        • h = height of the prism
    3. Lateral Surface Area:
      • LSA = Ph
    4. Base Area (Heron’s Formula):
      • B = √(s(s-a)(s-b)(s-c))
        • a, b, c = sides of the triangle
        • s = semi-perimeter (s = (a+b+c)/2)

    Benefits of Using a Triangular Prism Calculator

    • Accuracy: Eliminates manual calculations and potential errors.
    • Efficiency: Provides results quickly, saving time and effort.
    • Versatility: Can calculate various measurements based on different inputs.
    • User-Friendliness: Most calculators have simple interfaces and clear instructions.
    • Accessibility: Available online for free, offering convenience.

    Interesting Facts

    • Triangular prisms are found in various real-world examples, including:
      • Roofs of houses
      • Chocolate bars
      • Toblerone packaging
      • Tents
      • Picnic tables
    • The triangular prism is the only prism that can tessellate space (fill a space without overlaps or gaps).


    The triangular prism calculator is a valuable tool that simplifies the process of calculating measurements of triangular prisms. It promotes accuracy, efficiency, and accessibility in various fields. Whether you’re a student exploring geometry or a professional working with 3D design, this calculator can be a helpful addition to your toolkit.

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