Metal Weight Calculator
Select a shape and material, then select the size to calculate the weight of the metal or alloy.
How to Calculate Metal Weight
Calculating the weight of a metal object or material can be done in a few simple steps.
Step One: Calculate Volume of Metal
The first step in finding the weight of a metal object is to find estimate its volume. For a rectangular object such as metal plate or bar, use the following volume formula:
volume = length × width × height
Thus, the volume is equal to the length times the width times the height.
When measuring the volume it will be important to keep all dimensions in the same unit. So, measure the length, width, and height in inches or centimeters. The resulting volume will thus be in cubic inches or cubic centimeters.
Use the following volume formulas for various metal shapes:
width × width × length
3.14 × (diameter ÷ 2) × (diameter ÷ 2) × length
(width – wall thickness) × wall thickness × 4 × length
(outer diameter – wall thickness) × wall thickness × 3.14 × length
width × thickness × length
Step Two: Find the Metal Density
The next step in calculating the weight is to find the density of the metal object. You’ll need to know what type of metal the object is, then reference a density chart to locate the density.
Use our metal density chart to locate the density of the metal you’re using.
Step Three: Multiply the Volume by the Density
Once you know the volume and the density, the final step is to multiply the volume by the density to calculate the weight.