Calculadora de Peso de Aço
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
peso = V × 7850 kg/m³
About this calculator
The steel weight calculator determines the mass of a steel piece based on its volume. The calculation uses the standard density of steel, which is 7850 kg/m³. Simply enter the volume of the piece in cubic meters, cubic centimeters, or liters, and the tool automatically converts to the appropriate unit, applying the formula weight = volume × 7850 kg/m³. The result is displayed in kilograms, with an option to view it in tons as well.
This tool is useful for engineers, architects, builders, and students who need to estimate the weight of beams, plates, bars, or any other steel component. Knowing the weight is essential for structural calculations, foundation design, transportation, and material budgeting. For example, when designing a steel structure, the weight of the parts directly influences the choice of profiles and the supported loads.
When using the calculator, it is important to measure the volume correctly. For complex geometries, the volume can be obtained through geometric formulas or 3D modeling. Keep in mind that steel density may vary slightly depending on the alloy (carbon steel, stainless steel, etc.), but 7850 kg/m³ is a widely accepted average for common steels. For critical applications, consult the material's datasheet.
Frequently asked questions
Can I use this calculator for any type of steel?
Yes, for most common steels (carbon, stainless, etc.) a density of 7850 kg/m³ is a good approximation. For specific alloys, check the exact density in the datasheet.
How do I calculate the volume of an irregular piece?
For irregular shapes, you can use Archimedes' principle (water displacement) or 3D modeling to obtain the volume accurately.
The result is in kg, but I need it in tons. How do I convert?
The calculator already displays the weight in tons automatically, just select the desired option. If not, divide the value in kg by 1000.
What is the difference between weight and mass?
In practice, for structural calculations, weight is considered as mass times gravity. This calculator provides mass, which multiplied by 9.81 m/s² gives weight in newtons.
Does the calculator consider the weight of coatings or paint?
No, it only calculates the weight of steel. Additional coatings should be added separately if significant.