This online calculator calculates the useful inner volume of a cylindrical tank based on its outer dimensions, length, and diameter and wall thickness.

This construction calculator calculates volume of four walls of a rectangular building by building length, width, height and thickness of a walls

This construction calculator calculates volume of four walls of a rectangular building by building length, width, height and thickness of a walls

This online calculator computes unknown archimedean spiral dimensions from known dimensions. The spiral dimensions include: outer diameter, inner diameter, separation distance (distance between arms, thickness), spiral length, number of turnings