Rivet Size Calculator

Find rivet diameter and length for a material thickness.

Rivet diameter 9

Rivet length 16.5

Formula: diameter ≈ 3 × thickness ; length ≈ thickness + 1.5 × diameter

Step-by-step with your numbers:

1. Values used:

2. Material thickness = 3

4. Rivet diameter = Material thickness squared = 3 x 3 = 9

5. Rivet length = 16.5

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A rule of thumb for selecting blind-rivet diameter and length.

The math behind it

rivet diameter ≈ 3 × sheet thickness for good grip; length ≈ thickness + 1.5 × diameter.

3 mm sheet → ~9 mm diameter, 16.5 mm length.

Rivet material?

Match the rivet material to the workpiece to avoid galvanic corrosion.