Shelving Load Capacity Calculator
Enter shelf material, dimensions, and support type, get safe weight capacity with safety margin. Covers wood, steel, and composite.
Results
Safe working load includes a 25% safety margin. For heavy-load or safety-critical shelving, consult a structural engineer.
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How to Use This Calculator
1. Select shelf material. Solid wood is the strongest common shelf material. Plywood is nearly as strong. Particleboard is the weakest.
2. Set thickness and length. Thicker shelves hold more weight. Longer spans hold less weight per linear foot.
3. Enter bracket details. More brackets mean more support. Check bracket manufacturer specs for individual capacity.