Convert Pound to Slug (lb to slug)

In next fields, kindly type your value in the text box under title [ From: ] to convert from pound to slug (lb to slug). As you type your value, the answer will be automatically calculated and displayed in the text box under title [ To: ].


Pound (abbreviations: lb, or lbs, or ps): is a unit of force used in some systems of measurement including English Engineering units and the British Gravitational System. Also, it is a unit of mass used in the imperial, United States customary and other systems of measurement.

Slug (abbreviations: ps2pf, or lb.s2/ft): is a unit of mass in the weight-based system of measures, especially within the British Imperial measurement system and in the United States customary measures system. Systems of measure either define mass and derive weights or define a base weight and derive a mass unit. It is the mass that is accelerated by 1 ft/s2 when a force of one pound (lbf) is applied on it.

How to Convert Pounds to Slugs

Example: How many slugs are equivalent to 21.09 pounds?


1 pounds = 0.03108 slugs

21.09 pounds = Y slugs

Assuming Y is the answer, and by criss-cross principle;

Y equals 21.09 times 0.03108 over 1

(i.e.) Y = 21.09 * 0.03108 / 1 = 0.6554772 slugs

Answer is: 0.6554772 slugs are equivalent to 21.09 pounds.

Practice Question: Convert the following units into slug:

N.B.: After working out the answer to each of the next questions, click adjacent button to see the correct answer.

( i ) 51.95 lb

( ii ) 69.99 lb

( iii ) 7.2 lb

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