Sling Leg Tension

Calculate sling tension and capacity from angle & mass:

Lifted Mass (kg)

Physical Sling Legs

Sling Angle from Horizontal (°)

Per-Leg WLL (kg)

Effective Load-Bearing Legs2 legs (angle factor: 1.155×)

Chart Utilization

% of WLL

Current Total Load

Max Rated Load

0%90%100%130%

—enter a positive WLL

Max Permitted Load

Calculate allowable load given safety threshold:

Do not exceed %

WLL (T)

Minimum WLL Required

Find minimum capacity rating needed for your load:

Load + Rigging (T)

Do not exceed %

How this calculator works

Screen sling-leg tension from lifted mass and angle using an explicit effective-leg basis, with conservative handling for multi-leg assemblies.

FormulaLeg tension = lifted mass ÷ (effective load-bearing legs × sin angle from horizontal)

What this assumes

One and two-leg assemblies use their actual leg count; three and four-leg assemblies use two effective legs for conservative screening.
Angle is measured from horizontal, not vertical.
Entered WLL applies to each leg in the exact proposed configuration.

What it does not cover

Unequal load sharing or centre-of-gravity offset
Hitch, D/d, edge, material or hardware reductions
Shock, dynamic and environmental effects

Sling Angle Load Calculator

Sling Leg Tension

Chart Utilization

Max Permitted Load

Minimum WLL Required

How this calculator works

What this assumes

What it does not cover

Sling Angle Load Calculator

Sling Leg Tension

Chart Utilization

Max Permitted Load

Minimum WLL Required

How this calculator works

What this assumes

What it does not cover

Sling Angle Load Calculator

Sling Leg Tension

Chart Utilization

Max Permitted Load

Minimum WLL Required

How this calculator works

What this assumes

What it does not cover

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Sling Leg Tension

Chart Utilization

Max Permitted Load

Minimum WLL Required

How this calculator works

What this assumes

What it does not cover

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