• Spherical Cap Volume, Base Area & Surface Area Calculator
    Compute a spherical cap's volume, base area, total surface area and parent sphere radius from its base radius a and height h. Free online geometry tool.
  • Rectangular Pyramid Volume Calculator
    Calculate the volume of a rectangular pyramid from its length, width, and height using V = (1/3)·l·w·h. Fast, accurate, free online tool.
  • Radius of a Cone Calculator
    Find the radius of a cone from its volume and height using r = sqrt(3V / (π·h)). Instant results plus diameter, with a worked example and formula.
  • Radius of a Sphere Calculator
    Find the radius of a sphere from its volume, surface area, diameter, or circumference. Free online calculator with formulas and worked examples.
  • Triangular Pyramid Volume Calculator
    Calculate the volume of a triangular pyramid (tetrahedron) from the triangle base, triangle height, and pyramid height using V = (1/3)·base area·H.
  • Radius of a Cylinder Calculator
    Find the radius of a cylinder from its volume and height using r = √(V / (π·h)). Instant results plus the diameter, with a worked example.
  • Surface Area of a Rectangular Prism Calculator
    Calculate the surface area of a rectangular prism (cuboid) from its length, width, and height using A = 2(lw + lh + wh). Free and instant.
  • Surface Area of a Cylinder Calculator
    Calculate the total surface area of a cylinder from its radius and height. Get lateral area, base area, and total area instantly with the formula A = 2πr(r + h).
  • Hollow Cylinder Volume Calculator
    Calculate the volume of a hollow cylinder, pipe or tube from its outer radius, inner radius and height using V = π·h·(R² − r²).
  • Hexagonal Pyramid Calculator
    Calculate the volume, base area, lateral and total surface area, and slant height of a regular hexagonal pyramid from its base edge and height.
  • Truncated Spheroid Volume Calculator
    Compute the volume, flat base area, and curved surface area of a spheroidal segment (ellipsoid of revolution cut by a plane) of height h from its bottom.
  • Height of a Square Pyramid Calculator
    Find the height of a square pyramid from its volume and base edge length using h = 3V/a². Fast, free geometry calculator with worked examples.
  • Cone Diameter Calculator
    Calculate the base diameter and radius of a cone from its volume and height using d = 2·√(3V/(π·h)). Fast, accurate geometry tool.
  • Diameter of a Cylinder Calculator
    Find the diameter of a cylinder from its radius, or from its volume and height. Uses d = 2r = 2√(V/πh). Free, instant, step-by-step.
  • Cylinder Volume in Gallons Calculator
    Calculate the volume of a cylinder in US gallons from its diameter and height in feet. Free tank capacity calculator with the exact formula and example.
  • Cylinder Volume in Liters Calculator
    Calculate the volume of a cylinder in liters from its radius and height in centimeters. Free, instant, and accurate online cylinder volume tool.
  • Cuboid Calculator
    Calculate the volume, surface area, space diagonal and total edge length of a cuboid (rectangular box) from its length, width and height.
  • Cubic Yards in a Cylinder Calculator
    Calculate the volume of a cylinder in cubic yards from its diameter and height. Enter dimensions in feet, inches, yards, or meters.
  • Cubic Inches of a Cylinder Calculator
    Calculate the volume of a cylinder in cubic inches from its diameter and height. Uses V = π·r²·h and also shows the volume in US gallons.
  • Cubic Feet of a Cylinder Calculator
    Calculate the volume of a cylinder in cubic feet from its diameter and height. Free online cylinder cubic feet calculator with the formula and examples.
  • US Fluid Gallon / Pint / Ounce to Liter Converter
    Convert volume between liters/milliliters and US fluid gallons, pints and fluid ounces in both directions. Uses US (not Imperial/UK) liquid units.
  • Truncated Cylinder Volume Calculator
    Calculate the volume, lateral surface area, and total surface area of a truncated (obliquely cut) right circular cylinder from radius and two side heights.
  • Hollow Cylinder Volume, Lateral Area and Surface Area Calculator
    Calculate the volume, lateral (side) surface area, and total surface area of a hollow cylinder (tube / pipe) from its outer radius, inner radius and height.
  • Volume of a Trapezoidal Prism Calculator
    Calculate the volume of a trapezoidal prism from the two parallel sides, trapezoid height, and prism length. Free, instant, with the formula explained.