Pounds to ounces

Convert pounds to ounces (or back). There are 16 ounces in a pound, so multiply pounds by 16.

By the Calcist team · Checked against known answers · Updated October 29, 2026

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How many ounces are in a pound?

There are 16 ounces in a pound. This is the avoirdupois pound used for everyday weights in the US, such as food, mail and body weight. NIST Handbook 44 lists it as 16 ounces = 1 pound, and defines the pound as exactly 453.592 37 grams.

How it's calculated

ounces = pounds × 16 · pounds = ounces ÷ 16

For a decimal number of pounds, the whole pounds stay as pounds and the decimal part times 16 gives the extra ounces:

2.5 lb = 2 lb + 0.5 × 16 oz = 2 lb 8 oz = 40 oz

Worked examples

1 lb = 1 × 16 = 16 oz
2 lb = 2 × 16 = 32 oz
5 lb = 5 × 16 = 80 oz
44 oz = 44 ÷ 16 = 2.75 lb, or 2 lb 12 oz

Pounds to ounces chart, 1 to 100 lb

Pounds	Ounces	Pounds	Ounces
1 lb	16 oz	51 lb	816 oz
2 lb	32 oz	52 lb	832 oz
3 lb	48 oz	53 lb	848 oz
4 lb	64 oz	54 lb	864 oz
5 lb	80 oz	55 lb	880 oz
6 lb	96 oz	56 lb	896 oz
7 lb	112 oz	57 lb	912 oz
8 lb	128 oz	58 lb	928 oz
9 lb	144 oz	59 lb	944 oz
10 lb	160 oz	60 lb	960 oz
11 lb	176 oz	61 lb	976 oz
12 lb	192 oz	62 lb	992 oz
13 lb	208 oz	63 lb	1,008 oz
14 lb	224 oz	64 lb	1,024 oz
15 lb	240 oz	65 lb	1,040 oz
16 lb	256 oz	66 lb	1,056 oz
17 lb	272 oz	67 lb	1,072 oz
18 lb	288 oz	68 lb	1,088 oz
19 lb	304 oz	69 lb	1,104 oz
20 lb	320 oz	70 lb	1,120 oz
21 lb	336 oz	71 lb	1,136 oz
22 lb	352 oz	72 lb	1,152 oz
23 lb	368 oz	73 lb	1,168 oz
24 lb	384 oz	74 lb	1,184 oz
25 lb	400 oz	75 lb	1,200 oz
26 lb	416 oz	76 lb	1,216 oz
27 lb	432 oz	77 lb	1,232 oz
28 lb	448 oz	78 lb	1,248 oz
29 lb	464 oz	79 lb	1,264 oz
30 lb	480 oz	80 lb	1,280 oz
31 lb	496 oz	81 lb	1,296 oz
32 lb	512 oz	82 lb	1,312 oz
33 lb	528 oz	83 lb	1,328 oz
34 lb	544 oz	84 lb	1,344 oz
35 lb	560 oz	85 lb	1,360 oz
36 lb	576 oz	86 lb	1,376 oz
37 lb	592 oz	87 lb	1,392 oz
38 lb	608 oz	88 lb	1,408 oz
39 lb	624 oz	89 lb	1,424 oz
40 lb	640 oz	90 lb	1,440 oz
41 lb	656 oz	91 lb	1,456 oz
42 lb	672 oz	92 lb	1,472 oz
43 lb	688 oz	93 lb	1,488 oz
44 lb	704 oz	94 lb	1,504 oz
45 lb	720 oz	95 lb	1,520 oz
46 lb	736 oz	96 lb	1,536 oz
47 lb	752 oz	97 lb	1,552 oz
48 lb	768 oz	98 lb	1,568 oz
49 lb	784 oz	99 lb	1,584 oz
50 lb	800 oz	100 lb	1,600 oz

Decimal pounds

Decimal pounds	Ounces	Pounds and ounces
0.1 lb	1.6 oz	0 lb 1.6 oz
0.25 lb	4 oz	0 lb 4 oz
0.5 lb	8 oz	0 lb 8 oz
0.75 lb	12 oz	0 lb 12 oz
1.25 lb	20 oz	1 lb 4 oz
1.5 lb	24 oz	1 lb 8 oz
2.5 lb	40 oz	2 lb 8 oz
3.75 lb	60 oz	3 lb 12 oz

Ounces to pounds

Ounces	Pounds
1 oz	0.0625 lb
2 oz	0.125 lb
4 oz	0.25 lb
6 oz	0.375 lb
8 oz	0.5 lb
10 oz	0.625 lb
12 oz	0.75 lb
20 oz	1.25 lb
24 oz	1.5 lb
32 oz	2 lb
48 oz	3 lb

Ounces vs fluid ounces

An ounce (oz) measures weight. A fluid ounce (fl oz) measures volume: one US fluid ounce is 29.573 milliliters. The two only line up for liquids about as dense as water, so don't swap them for flour, oil or honey. For cups, milliliters and other volume units, use the unit converter.

Limitations

This uses avoirdupois pounds and ounces. Gold, silver and some medicines use troy weights, which are different.
Results are rounded for display. A scale that reads in tenths of an ounce won't match to more places than that.

Sources

How we checked this

Before every update, this calculator is run in a real browser with these known answers, and it must match all of them:

2.5 lb = 40 oz (2 lb 8 oz) ✓
1 lb = 16 oz ✓
5 lb = 80 oz ✓
2 lb + 8 oz = 40 oz ✓
0.1 lb = 1.6 oz ✓
44 oz = 2.75 lb = 2 lb 12 oz ✓
Negative weight is rejected ✓

Last checked October 26, 2026. Spotted something wrong? The math is done in your browser with the formula shown on this page, so you can check any result by hand.

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Questions people ask

How many ounces are in a pound?

16 ounces. To change pounds to ounces, multiply by 16.

What is 1 pound in ounces?

1 lb = 16 oz. Half a pound is 8 oz and a quarter pound is 4 oz.

How many ounces are in 5 pounds?

80 ounces, because 5 × 16 = 80.

What is 2 lb in oz?

2 lb = 32 oz, because 2 × 16 = 32. 2.5 lb is 40 oz.

Is a fluid ounce the same as an ounce?

No. An ounce is weight and a fluid ounce is volume (29.573 mL). They're only about equal for water.

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