Surface Area Calculator

  • Carpet Area Calculator
    Calculate how many square yards of carpet you need from room length and width in feet, with an optional waste allowance for cuts and seams.
  • Circle to Sphere Surface Area Calculator
    Calculate the surface area of a sphere from its radius using SA = 4πr². Also returns diameter and volume. Fast, free, and accurate geometry tool.
  • General Prism Surface Area Calculator
    Calculate the total surface area of any prism from its base area, base perimeter, and height using SA = 2·base area + perimeter · height.
  • Square Footage Calculator
    Calculate square footage from length and width in feet. Get instant area in sq ft, square yards, and square meters for any room or space.
  • Body Surface Area (BSA) Calculator
    Calculate your Body Surface Area (BSA) in m² using the Mosteller formula from your height (cm) and weight (kg). Fast, accurate clinical tool.
  • Hemisphere Surface Area Calculator
    Calculate the total surface area of a hemisphere (3πr²) plus its curved and flat-base areas from the radius. Fast, accurate, and free.
  • Surface Area of a Sphere Calculator
    Calculate the surface area of a sphere instantly with A = 4πr². Enter the radius to get surface area, diameter, and volume. Free and easy to use.
  • Surface Area of a Cylinder Calculator
    Calculate the total surface area of a cylinder from its radius and height using A = 2πr² + 2πrh. Free, instant, with lateral and base areas shown.
  • Surface Area of a Pyramid Calculator
    Calculate the total surface area of a square pyramid from its base edge and slant height. Free, instant geometry tool with formula and worked example.
  • Triangular Prism Calculator
    Free triangular prism calculator: find volume, total/lateral/top/bottom surface area or prism height from sides a, b, c and height h using Heron's formula.
  • Surface Area Calculator for Geometric Solids
    Calculate total, lateral and bottom surface area of spheres, cones, cylinders, pyramids, prisms, frustums, capsules and more, in any length unit.
  • Solid Geometry Calculator (Volume & Surface Area)
    Free solid geometry calculator for volume and surface area of 13 shapes: sphere, cone, cylinder, frustum, cube, prism, pyramid, tube and 3D distance.
  • Solid Geometry Shapes Calculator
    Free solid geometry calculator: find the volume, surface area, slant height and diagonals of a sphere, cone, cylinder, cube, pyramid, frustum, capsule and box.
  • Rectangular Prism Calculator (Cuboid)
    Calculate a rectangular prism (cuboid): volume, total, lateral, top and bottom surface area, space diagonal and missing height from any 3 known values.
  • Circular Cylinder Calculator
    Solve a right circular cylinder from any 2 known values: radius, height, volume, lateral area, or total surface area. Get all properties plus "in terms of pi".
  • Right Circular Cone Calculator
    Solve a right circular cone from any two known values. Get radius, height, slant height, volume, lateral/base/total surface area and cone angles instantly.
  • Cube Geometry Solver
    Solve every property of a cube from one known value. Enter side length, face diagonal, space diagonal, surface area or volume to get the other four.
  • Capsule Calculator
    Calculate the volume, surface area, circumference, radius and side length of a capsule (cylinder with two hemispherical caps) from any two known values.
  • Regular Hexagonal Prism Volume and Surface Area Calculator
    Calculate the volume and surface area of a regular hexagonal prism from its base side length and height. Free, instant geometry calculator with formulas.
  • Equilateral Triangular Prism Volume and Surface Area Calculator
    Calculate the volume and surface area of an equilateral triangular prism from the triangle side length a and prism height h. Fast, accurate, free.
  • Volume and Surface Area of a Circular-Segment Solid of Revolution
    Compute the volume and surface area of a circular-segment solid of revolution, with optional partial sweep angle (truncated). Uses Pappus's theorems. Universal geometry tool.
  • Sphere Surface Area Calculator
    Compute the surface area of a sphere from its radius. Enter a radius to get A = 4πr² with instant results in square units.
  • Pyramid Lateral Surface Area Calculator
    Calculate pyramid lateral surface area with length, width, and height inputs. Get accurate results for triangular faces of pyramids using this efficient online tool.
  • Pyramid Surface Area Calculator
    Calculate the surface area of a pyramid with this easy-to-use Pyramid Surface Area Calculator. Input length, width, and height to get accurate results instantly.

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