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🔺 Triangular Prism Calculator

Calculate the volume and surface area of a triangular prism from its triangular base dimensions and its length.

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What is a triangular prism?

A triangular prism is a 3D solid with two identical triangular ends (bases) connected by three rectangular side faces, and a constant cross-section along its length.

How this calculator works

Volume is found by multiplying the area of the triangular base by the prism’s length: Volume = (1/2 x base x height) x length. Total surface area adds the two triangular end faces to the three rectangular lateral faces: Surface Area = (perimeter of triangle x length) + (2 x triangle area).

  • Enter the triangle’s base and height (used for the triangular area).
  • Enter the two other triangle sides to calculate the perimeter used for the rectangular side faces.

This tool is for general math and geometry learning purposes; for very precise engineering work, verify with exact measurements.

Last reviewed August 2026