Pound to Slug Converter 2025 - lb to slug Mass Calculator | Thiyagi

Pound to Slug Converter

Convert between pounds (lb) and slugs for engineering calculations, physics problems, mechanics, and imperial unit mass measurements

Imperial unit of force/weight
Imperial unit of mass
Enter a value to see the conversion result

Mass Reference

Pounds ⇔ Slugs
32.17 lb ⇔ 1 slug
64.34 lb ⇔ 2 slugs
160.85 lb ⇔ 5 slugs
321.7 lb ⇔ 10 slugs
1,609 lb ⇔ 50 slugs
3,217 lb ⇔ 100 slugs

Engineering Applications

Mechanical Systems:
• Car mass: 60-120 slugs (1,930-3,860 lb)
• Engine block: 5-15 slugs (160-480 lb)
• Motorcycle: 8-20 slugs (260-640 lb)
• Boat hull: 30-200 slugs (965-6,435 lb)
Structural Engineering:
• Steel beam: 1-10 slugs per foot
• Concrete slab: 3-8 slugs per sq ft
• Building materials: 0.1-20 slugs
• Bridge components: 50-500 slugs
Physics Calculations:
• Newton's 2nd law: F = ma
• Momentum: p = mv
• Kinetic energy: KE = ½mv²
• Inertia calculations

Unit System

  • lb: Pound-force (weight)
  • slug: Pound-mass (mass)
  • Conversion: 1 slug = 32.174 lb
  • Gravity: 32.174 ft/s² standard

Usage Tips

  • lb for weight/force
  • slug for mass calculations
  • Remember F = ma relationship
  • Standard gravity = 32.174 ft/s²

Applications

  • Engineering: Structural analysis
  • Physics: Dynamics problems
  • Automotive: Vehicle calculations
  • Aerospace: Mass properties