Sling Angle & Tension

Leg force for a symmetric two-leg static lift.

Use a decimal point or comma; no thousands separators.

Calculation inputs

Total loadLoad unitSling angle from horizontal θ (0 < θ ≤ 90°)Manufacturer-rated two-leg assembly WLL at this angle and hitch (kN) — optional

Result

Complete all fields with valid finite values and the specified units; denominators/durations must be positive. Cases/workers must be whole numbers.

Review the methodology and limits below before interpreting this result.

Example: 1000 kg, 30° → 9.81 kN (1000 kgf) per leg. Invalid: 0° → no result.

Methodology & limits

T = W / (2 sin θ); θ from horizontal; 1 kgf = 9.80665 N

Symmetric two-leg static model only. Below 30° requires manufacturer/qualified-person approval. Enter only the verified manufacturer assembly WLL for this angle and hitch. Independently verify leg ratings, connectors, centre of gravity, dynamic effects, D/d and the lift plan. Not lifting approval.

Calculated at full precision; display rounded to two decimal places only.

Official reference / methodologyhttps://www.osha.gov/safe-sling-use/tables-figures