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Material Density Database
Materials & Weight

Material Weight Calculator determines mass of metal and plastic plates, bars, tubes, and pipes by multiplying volume by material density. Use the formula W = V x rho where W = weight, V = volume, rho = material density. This calculator implements ISO / ASTM standard formulas.

Material Weight Calculator

Calculate the weight and mass of standard engineering shapes for common metals and alloys. Cross-referenced with published material density databases.

Domain of Validity

Valid for standard structural profiles at room temperature (20 C). Density values are for nominal compositions.

Worked Example

Steel round bar, 1000 mm long, 25 mm dia: V = pi x (0.0125)^2 x 1.0 = 4.909e-4 m3. W = 4.909e-4 x 7850 = 3.854 kg.

Verification

Density values verified against ISO 17558 and ASM International. Last verified: August 2026.

Accuracy and Uncertainty

Results accurate to plus/minus 0.5% for ideal geometry. Actual parts may vary plus/minus 2-5% due to tolerances.

Engineering Materials Guide & Related Sizing Tools

Explore complete material property tables, density benchmarks, and related structural design calculators:

Engineering Materials GuideSteels, aluminums, alloys & engineering plasticsMaterial Properties DataSearchable modulus, strength, and density databaseUnit ConverterInstant conversion for mass (kg, lb) and volumeBeam Deflection CalculatorEvaluate structural bending under dead weight

Frequently Asked Questions

How is the weight of a tube calculated?

Tube weight = pi x (D_outer^2 - D_inner^2) / 4 x length x density. The calculator subtracts the inner void from the outer cylinder volume.

What density values are used?

Standard material densities: carbon steel 7850 kg/m3, stainless steel 8000 kg/m3, aluminum 2700 kg/m3, copper 8960 kg/m3, titanium 4500 kg/m3. Values sourced from ISO and ASM handbooks.

Can I calculate weight for custom alloys?

Select the closest standard alloy or manually enter the density value in kg/m3. The calculator accepts any density input.

What profile types are supported?

Round bar, square bar, rectangular bar, flat plate, round tube, square tube, rectangular tube, pipe, I-beam, C-channel, angle, and T-bar. All 12 standard structural profiles.

How accurate are the results?

Results are accurate to plus/minus 0.5% for standard profiles. Actual weight may vary due to manufacturing tolerances (typically plus/minus 2-5% for hot-rolled products).