Convert Ounces (oz) to Pounds (lb)
1 ounce equals 0.0625 pounds.
Ounce to Pound Converter
What Is an Ounce?
The ounce (oz) is a unit of mass in the imperial and US customary systems equal to 1/16 of a pound (28.3495 grams). It is used for food packaging, postal weight, cooking ingredients, and small-item commerce. The abbreviation "oz" comes from the Italian onza.
What Is a Pound?
The pound (lb) is a unit of mass equal to 16 ounces or exactly 0.45359237 kilograms. It is the standard weight unit in the US for body weight, groceries, and shipping.
Ounces to Pounds Formula
pounds = ounces ÷ 16 exact
One pound contains exactly 16 ounces, by definition. This ratio has been standard since the avoirdupois system was adopted in the 13th century.
Worked Example
A package weighs 42 oz. What is that in pounds?
- Divide: 42 ÷ 16 = 2.625 lb
- Or: 2 lb 10 oz (42 − 32 = 10 remainder)
Quick Estimation
Divide ounces by 16. Quick anchors: 8 oz = ½ lb, 16 oz = 1 lb, 32 oz = 2 lb, 48 oz = 3 lb. For in-between values, find the nearest anchor and adjust: 26 oz = 16 + 10 = 1 lb 10 oz.
When You Need This Conversion
- Postal and shipping: USPS rates change at pound thresholds — knowing that 16 oz = 1 lb helps estimate postage costs.
- Cooking: Converting between ounce measurements and pound quantities for bulk recipes or scaling up.
- Baby weight: Newborns are measured in pounds and ounces (e.g., 7 lb 4 oz) — pediatric records need total ounces for growth charts.
- Grocery shopping: Comparing price per ounce vs price per pound to find the best deal.
Frequently Asked Questions
How many ounces are in a pound?
Exactly 16 ounces in 1 pound (avoirdupois), by definition.
Is a fluid ounce the same as an ounce?
No. A fluid ounce (fl oz) measures volume; an ounce (oz) measures weight/mass. 1 fl oz of water weighs approximately 1.043 oz — they are close but not interchangeable.
What is the difference between a regular ounce and a troy ounce?
A troy ounce (31.1035 g) is heavier than an avoirdupois ounce (28.3495 g). Troy ounces are only used for precious metals (gold, silver). A troy pound = 12 troy ounces, not 16.
How do I convert ounces to pounds and ounces?
Divide by 16. The quotient is pounds, the remainder is ounces. Example: 42 oz = 2 lb 10 oz (42 ÷ 16 = 2 remainder 10).
Common Ounce to Pound Conversions
Ounces to pounds Conversion Table
Reference table with common ounces to pounds conversions. All values calculated with high precision.
Ounces to Pounds Table
100 to 10000000
Pounds to Ounces Table
1 to 100000
Looking for the reverse? Convert Pound to Ounce
Related Weight (Mass) Converters
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Need a combined format?
- Kg to Pounds and Ounces — combined lb + oz format
- Kg to Stones and Pounds — UK body weight format
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- G-force to m/s² — Pound-force = pound-mass × gravity
