Wire Rope Parameters
Enter specifications to calculate load capacity
Wire Type *
Wire Construction
Strand count × wires per strand (e.g. 6×19 = 6 strands, 19 wires each)
Nominal Diameter *
Common sizes: 6, 8, 10, 12, 16, 20, 25, 32 mm
mm
Unit System
Safety Factor (SF)
Min SF: 3.5 (lifting), 5 (personnel), 6 (crane hooks)
5
2 – Bare minimum6 – Personnel lifting10 – Max
Sling Configuration
Applied Load (optional)
Enter load to check if it's within safe working limits
kg
Calculation Results
Safe working load, breaking strength & sling capacity
Enter wire rope specifications and click Calculate Wire Load to see results.
All calculations follow BS EN 12385 and ASME B30.9 standards.
✓ Within Safe Limits
–
Safe Working Load
–
kg
Breaking Strength
–
kg
Safety Factor
–
× minimum recommended
Sling Capacity
–
kg
Load Utilisation
0%50%75%100%
Formula Applied
SWL = Breaking Strength ÷ Safety Factor
Sling Configuration Table
| Configuration | Angle Factor | SWL (kg) | Status |
|---|
📐 Sling Angle Factor Reference
Galvanised 6×19 SWL Reference (SF = 5)
| Dia (mm) | Breaking kN | SWL (kg) | Weight kg/m |
|---|---|---|---|
| 6 | 14.7 | 300 | 0.14 |
| 8 | 26.0 | 530 | 0.24 |
| 10 | 40.6 | 825 | 0.38 |
| 12 | 58.5 | 1190 | 0.55 |
| 16 | 104 | 2120 | 0.98 |
| 20 | 162 | 3300 | 1.53 |
| 25 | 254 | 5165 | 2.39 |
| 32 | 416 | 8465 | 3.92 |
Recommended Safety Factors
| Application | Min. SF | Standard |
|---|---|---|
| General lifting | 3.5 | BS EN 12385 |
| Rigging / hoisting | 5.0 | ASME B30.9 |
| Personnel lifting | 6.0 | BS 7121 |
| Mining operations | 7.0 | BS 302 |
| Crane main hoist | 5.0 | FEM 1.001 |
| Material handling | 4.0 | ISO 2408 |
| Offshore / marine | 6.0 | DNV-GL |
| Dynamic / shock loads | 8–10 | Engineering judgment |