Convert Pound (lb) (lb) to Slug (slug)

How to convert pound (lb) to slug

We convert by pivoting through the SI base unit for Mass and applying exact factors where applicable.

Share this conversion: /convert/pound-to-slug/1

Examples

• 1 lb = 0.031081 slug
• 0.5 lb = 0.01554 slug
• 2.5 lb = 0.077702 slug
• 10 lb = 0.31081 slug

Linear unit conversions use standardized factors; many are exact by definition (e.g., 1 in = 25.4 mm, 1 ft = 0.3048 m).

Common mistakes

• Confusing mass (lb) with force (lbf) in engineering contexts.
• Mixing metric tonnes (t) with short/long tons.

About Mass

Mass quantifies the amount of matter. The kilogram is defined by Planck’s constant, which anchors mass to fundamental physics. In practice, grams and pounds dominate everyday use—from recipes and parcels to body weight—while tonnes and long tons appear in logistics and industry.