Bolt Weight Calculator Metric

Bolt Weight Calculator Metric




Bolt weight calculator metric is an essential tool for engineers, constructors, and DIY enthusiasts. It helps determine the weight of bolts based on their diameter, length, and material. This information is crucial for designing structures, calculating loads, and ensuring safety.

  1. Enter the diameter and length of the bolt in millimeters.
  2. Select the material of the bolt.
  3. Click ‘Calculate’.

The calculator uses the formula for the volume of a cylinder (V = πr²h) and the density of the material to calculate the weight. The formula is as follows:

Weight = π * (diameter/2)² * length * density

Density of common bolt materials
Material Density (kg/m³)
Stainless Steel 7930
Carbon Steel 7850
  • Always round up to the nearest whole number when calculating the number of bolts needed.
  • Consider using heavier bolts in high-vibration or high-stress areas.
What if I don’t know the material of the bolt?

You can estimate the weight using the density of stainless steel, as it’s the heaviest common bolt material.

Bolt weight calculator metric in action Bolt weight calculation process

For more information, see the density of materials from Engineering ToolBox.

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