This tool will calculate the theoretical bore diameter of a piston cylinder assembly by entering values for the piston force and the pressure within the cylinder ø=√(4F/(πP))

# Diameter & Radius Calculators

Online web tools for converting and calculating diameter, radius of 2 and 3 dimensional circular shaped objects and spaces.

## Diameter to Radius of Circle Calculator

This tool will calculate the radius of a circle from the diameter, and will convert different measurement units for diameter and radius r=ø/2

## Radius to Diameter of Circle Calculator

This tool will calculate the diameter of a circle from the radius, and will convert different measurement units for radius and diameter ø=2r

## Area to Radius of Circle Calculator

This tool will calculate the radius of a circle from the area, and will convert different measurement units for area and radius r=√(A/π)

## Volume to Radius of Sphere Calculator

This tool will calculate the radius of a sphere from the volume, and will convert different measurement units for volume and radius r=∛(¾V/π)

## Circumference to Radius of Circle Calculator

This tool will calculate the radius of a circle from the circumference, and will convert different measurement units for circumference and radius r=C/2π

## Surface Area to Radius of Sphere Calculator

This tool will calculate the radius of a sphere from the surface area, and will convert different measurement units for surface area and radius r=√(A/4π)

## Surface Area to Diameter of Sphere Calculator

This tool will calculate the diameter of a sphere from the surface area, and will convert different measurement units for surface area and diameter ø=√(A/π)

## Circumference to Diameter of Circle Calculator

This tool will calculate the diameter of a circle from the circumference, and will convert different measurement units for circumference and diameter ø=C/π

## Volume to Diameter of Sphere Calculator

This tool will calculate the diameter of a sphere from the volume, and will convert different measurement units for volume and diameter ø=∛(6V/π)

## Volume & Length to Diameter of Cylinder Calculator

This online tool will calculate the diameter of a cylindrical shaped object from the required volume capacity and length ø =2√(V/Lπ)

## Volumetric Flow Rate & Flow Speed to Pipe Diameter Calculator

Calculate the internal diameter of a pipe or duct from the rate of volumetric flow and the flow speed , ø=2(Q/vπ)½

## Area to Diameter of Circle Calculator

This tool will calculate the diameter of a circle from the area, and will convert different measurement units for area and diameter, ø=2√(A/π)