Regular Prism Calculator

Number of Sides (n)
Base Side Length (a)
Prism Height (h)
Unit














Regular Prism Calculator Introduction

A regular prism (regular prism body) is a geometric solid composed of two identical regular polygonal bases and several rectangular lateral faces. This calculator can help you quickly compute various geometric parameters of a regular prism, including volume, surface area, base area, lateral surface area, inradius, and circumradius.

How to Use the Regular Prism Calculator

1. Enter Parameters: Input the following data at the top of the calculator:
Number of Sides (n): The number of sides of the regular polygonal base (≥3; e.g., input 3 for triangle, 4 for quadrilateral).
Base Edge Length (a): The length of each side of the regular polygon (e.g., 5 cm).
Prism Height (h): The perpendicular height of the prism (e.g., 10 cm).
Unit: Select the unit for calculation results (millimeter, centimeter, decimeter, meter).

2. Click Calculate
Click the "Calculate" button, and the system will automatically compute the following results:

Calculation ResultDescription
VolumeTotal volume of the prism (base area × height)
Base AreaArea of a single regular polygonal base
Sum of Two BasesTotal area of both bases
Lateral Face Area (per face)Area of a single rectangular lateral face
Lateral Surface AreaTotal area of all rectangular lateral faces
Total Surface AreaTotal surface area of the prism (sum of two base areas + lateral surface area)
Base PerimeterPerimeter of the regular polygonal base
Interior Angle (per vertex)Measure of each interior angle of the regular polygon
Sum of Interior AnglesTotal sum of all interior angles of the regular polygon
Exterior Angle (per vertex)Measure of each exterior angle of the regular polygon
Central AngleAngle formed at the center of the regular polygon between two adjacent vertices
CircumradiusRadius of the circumscribed circle of the regular polygon
InradiusRadius of the inscribed circle of the regular polygon