Conversion Formula
$$m_{\text{slug}} = \frac{m_{\text{lb}}}{32.174}$$
Divide pounds-mass by 32.174 (standard gravity in ft/s²) to get slugs.
lb to slug Conversion Table
| Pound (lb) | Slug (slug) |
|---|---|
| 0.1 | 0.0031081 |
| 0.5 | 0.0155405 |
| 1 | 0.031081 |
| 2 | 0.0621619 |
| 5 | 0.155405 |
| 10 | 0.31081 |
| 25 | 0.777024 |
| 50 | 1.55405 |
| 100 | 3.1081 |
| 250 | 7.77024 |
| 500 | 15.5405 |
| 1,000 | 31.081 |
lb to slug in Engineering
Mass conversions are essential for structural loading, material quantities, dynamic analysis, and shipping. The slug is particularly important for US engineers doing dynamics calculations. Accurate mass-to-weight conversion requires understanding of gravitational acceleration.
Pound: Primary US customary mass unit. Exactly 0.45359237 kg. Used for material weights and structural loads.
Slug: US customary unit of mass in the foot-pound-second system. Critical for dynamics: F = ma where F is in lbf and a is in ft/s².