Sling angle calculator
See how the angle of a sling multiplies the tension in each leg.
- Tension per leg
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- Load factor
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- Choose slings rated ≥
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RIGGING PLANNING TOOLS
Rigging calculators.
Explore indicative planning calculations for sling angles, shackles, ropes and blocks. Confirm product selection against manufacturer instructions and the supplied equipment documentation.
Rigging Calculator
Know the load before you lift it.
Start with the Equipment Advisor, or pick a calculator: sling angles, D and bow shackles, fibre and wire ropes, pulley blocks and unit conversion. For planning only: always follow your lift plan and the certified WLL on the gear.
Shackle selector
Enter the load on the shackle to find the smallest bow shackle that carries it.
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| Size | ≈ mm | WLL (t) |
|---|
Typical WLL for high-tensile carbon-steel bow shackles at a 6 : 1 design factor. Values vary by make and grade — the test certificate supplied with the shackle governs.
Load unit converter
Type in any box.
Specs & Manuals
Brand specs and manuals
Open each maker's PDF manual or catalogue, and explore reference strength and capacity data by product group. Values are reference data: always confirm against the data sheet and certificate for the product supplied.
PDF opens a PDF directly. Page opens a catalogue or data page. Search means we could not confirm a PDF, so the link opens a search for it.