Pounds to Ounces
Type a value in either box to convert between pounds and ounces. The factor is 16.
| Pounds | Ounces |
|---|---|
| 1 lb | 16 oz |
| 2 lb | 32 oz |
| 3 lb | 48 oz |
| 5 lb | 80 oz |
| 10 lb | 160 oz |
| 25 lb | 400 oz |
| 50 lb | 800 oz |
| 100 lb | 1600 oz |
How to use
- Enter a value in the Pounds field.
- The Ounces figure appears immediately — no button to press.
- Typing in the Ounces field converts back to Pounds the same way.
- Use the reference table for the values that come up most often.
Pounds to Ounces formula
Converting pounds to ounces is a single multiplication by 16.
oz = lb × 16
Put another way, one pound is exactly 16 ounces.
Why this factor: the pound and the ounce are both defined against the kilogram, so dividing one definition by the other gives 16 directly. Both definitions are set out in full below.
To go the other way, divide by 16 — or use the Ounces to Pounds converter, which is the same calculation reversed.
Worked example
Given 25 lb, multiplying by 16 yields 400 oz.
25 lb × 16 = 400 oz
The converter above does this for any value you type, in either direction.
What is a pound?
The pound is the primary unit of weight in the United States.
Definition: Exactly 0.45359237 kilogram since the 1959 International Yard and Pound Agreement — an exact definition, not a rounded one.
Where it is used: Body weight, grocery and produce pricing, shipping rates, and gym weights in the US.
Worth knowing: This is the avoirdupois pound. The troy pound used for precious metals is different (about 373 g).
What is an ounce?
An ounce is one sixteenth of a pound, used for small weights in the US.
Definition: Exactly 28.349523125 grams — one sixteenth of the international avoirdupois pound.
Where it is used: Food packaging, postal weights, and coffee and spice quantities in the US.
Worth knowing: Not the same as a fluid ounce, which measures volume. Also distinct from the troy ounce (31.103 g) used for gold and silver.
Pounds vs Ounces
The pound and the ounce belong to the same family of units, so converting between them is usually a matter of shifting a decimal point or applying a small whole-number factor.
Frequently asked questions
How many ounces are in a pound?
One pound equals 16 ounces.
What is the formula to convert pounds to ounces?
Multiply the number of pounds by 16. To reverse it, divide by 16 instead.
How do I convert ounces back to pounds?
Divide by 16, which is the same as multiplying by 0.0625.
How many ounces are in 10 pounds?
10 lb works out to 160 oz.
Is there anything to watch out for with pounds?
This is the avoirdupois pound. The troy pound used for precious metals is different (about 373 g).
How is the pound defined?
Exactly 0.45359237 kilogram since the 1959 International Yard and Pound Agreement — an exact definition, not a rounded one.