Stainless Steel Weight Calculator: Plate, Sheet, Pipe, Bar

Weight Calculation Formula

Weight Formula: The formula used to calculate the weight of metal is:

Weight=Volume×Density

Where:

• Volume is calculated based on the dimensions of the metal object.
• Density is the density of the specific material being used.

How to Calculate Stainless Steel Weight?

Step 1： Calculate the Volume

The shape and dimensions of the material determine the weight of the material, stainless steel material has multiple forms, like round, flat, tubular, hex and other shapes, step one is to calculate the volume of the material.

Step 2: Confirm the Metal Density

Alloy content determines density of stainless steel, some grades have the same densities, and some do not, so when we calculate the weight of stainless steel, they have different weights in the same size, for example, 304 and 316 stainless steel are not the same weight in the same size.

Step 3: Multiply the Volume by the Density

A metal object's weight, or mass, equals its volume multiplied by its density, and notice the different units to conversion.

Stainless Steel Plate Weight Calculation

The plate is flat in shape, including sheet coil, rectangular bar, square bar,

The formula of the plate is to multiply the three dimensional parameters together: width x height x length, and then multiply by the density to get to the weight,

Plate weight = L × W × T × density.

For example, plate dimension of 1500 mm width x 1.5 mm height x 3000 mm length, the volume is 0.00675 m3, given a density of 7930 kg/m3, so the weight of the plate is 0.00675m3 x 7930kg/m3 = 53.5 kg.

Stainless Steel Round Bar Weight Calculation

Round bar volume = Cross-sectional area × Length
Cross-sectional area = πr², (“r” = Radius, “d” = Diameter, r=d/2), so
Volume = π(d/2)² ×L = (πd²)/4 ×L.

Round Bar Weight = (πd²)/4×L×density

Stainless Steel Round Pipe Weight Calculation

Round Tube/Pipe Volume = Total volume – Hollow volume,
Total volume = π(OD/2)² × L,
Hollow volume = π[(OD-WT)/2]² × L,
Tube/Pipe Volume = π(OD/2)²×L-π[(OD-WT)/2]²×L, so

Pipe weight calculator = WT(OD-WT)×π×L×density

Stainless Steel Rectangular Tube Weight Formula

Rectangular Tube Volume = Total volume – Hollow volume = L×W×H – L×(W-2t)×(H-2t),
Rectangular Pipe Volume = 2Lt(W+H-2t), so

Rectangular Tube Weight Calculator = 2LT(W+H-2t)×density

NOTE: the weight is Theoretical Weight because these shapes are not exact sizes, they have tolerances in the manufacturing process, and the densities are also referenced values.