AutoEngCalc - Engineering Calculators

Safety Factor Calculator

Calculate factor of safety for yield, ultimate, fatigue, buckling and shear. Instant margin of safety and recommended values for different applications.

Safety Factor
2.5
Yield strength 400 MPa, applied stress 160 MPa

Factor of Safety

Featured: Yield, Ultimate, Fatigue, Buckling, Shear

Safety Factor vs Applied Stress

Shows how safety factor changes with stress level

Safety Factor Formulas
SF = Material Strength / Applied Stress
Margin of Safety = SF - 1

Enter parameters to see results

Recommended Safety Factors

Static Loads

General: 1.5–2.0

Structural: 2.0–3.0

Pressure vessels: 3.5–4.0

Dynamic/Fatigue

Normal cyclic: 3–6

High shock: 6–10

Aerospace: 10+

Footer - AutoEngCalc