Weight Load Calculator
Calculate point loads on truss spans, total rigging weight, and check SWL/WLL limits. Build up a load inventory and see distributed vs. point loading.
This calculator is for estimation only. Always have a qualified rigger or structural engineer verify all load calculations. Never exceed the rated Working Load Limit (WLL) of any component in the rigging system.
Single Point Load
Enter the weight of items on a single pick point. The calculator shows the load force and compares against a rated WLL.
kg
kg
: 1
Typical: 5:1 – 10:1
Load Force
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WLL Utilisation
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Breaking Strength
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Status
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Load Inventory
Build up an inventory of items to calculate the total rigging load for a point or truss.
kg
| Item | Weight | Qty | Subtotal | |
|---|---|---|---|---|
| 100 kg | ||||
| 72 kg | ||||
| 15 kg |
Total Weight
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Total Force
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WLL Utilisation
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Status
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Truss Span – Point Loads
For a simply-supported truss span with a single point load, calculate the reaction forces at each support.
m
kg
m
Distance from support A
kg
Reaction at A
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Reaction at B
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Total Load (inc. truss)
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Max Reaction Force
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Common Equipment Weights
Typical weights for common stage equipment. Always check the manufacturer's specification for exact figures.
| Equipment | Typical Weight |
|---|---|
| Moving head wash (LED) | 12–20 kg |
| Moving head spot | 18–35 kg |
| Moving head beam | 15–25 kg |
| LED par | 3–8 kg |
| Followspot | 15–40 kg |
| Line array element | 25–60 kg |
| 12″ truss (per metre) | 8–14 kg |
| 20.5″ truss (per metre) | 12–20 kg |
| Chain hoist (0.5T) | 20–30 kg |
| Chain hoist (1T) | 35–55 kg |
| LED video panel (500×500mm) | 6–12 kg |
| Kabuki drop system (per metre) | 3–5 kg |