Weight converter
Pounds to Ounces
If you need to know how many Ounces one Pounds contains, the answer is 16. The conversion is linear, so 10 lb is 160 oz and 100 lb is 1,600 oz. Use the converter for any other value.
Formula 1 lb = 16 oz
Need the other direction? Ounces to Pounds.
How to convert Pounds to Ounces
The international avoirdupois pound is exactly 0.45359237 kilograms. The avoirdupois ounce is one sixteenth of a pound, about 28.35 grams.
To convert Pounds to Ounces, multiply the value in lb by 16. For example, 10 lb × 16 = 160 oz. This works because the ratio between the two units is constant for every value in weight.
Worked examples
| lb | oz |
|---|---|
| 1 lb | 16 oz |
| 2.5 lb | 40 oz |
| 5 lb | 80 oz |
| 10 lb | 160 oz |
| 25 lb | 400 oz |
| 50 lb | 800 oz |
| 100 lb | 1,600 oz |
Reverse conversion
| oz | lb |
|---|---|
| 1 oz | 0.0625 lb |
| 5 oz | 0.3125 lb |
| 10 oz | 0.625 lb |
| 25 oz | 1.5625 lb |
| 50 oz | 3.125 lb |
| 100 oz | 6.25 lb |
When this conversion is useful
This is the calculation you need when you are comparing body weight, shipping weight or a recipe across metric and imperial units. Because the factor is fixed, you can use the same number for a single measurement or for a batch: 1,000 lb is 16,000 oz.
Is the conversion exact?
Yes for practical use: the factors come from international definitions, with rounding applied only for display.
Reference: BIPM SI Brochure and NIST SP 811. Last reviewed: 2026-11-01.
lb to oz conversion chart
The chart lists the most requested values. For a value that is not here, use the converter at the top of the page.
| Pounds (lb) | Ounces (oz) |
|---|---|
| 1 lb | 16 oz |
| 2 lb | 32 oz |
| 3 lb | 48 oz |
| 4 lb | 64 oz |
| 5 lb | 80 oz |
| 6 lb | 96 oz |
| 7 lb | 112 oz |
| 8 lb | 128 oz |
| 9 lb | 144 oz |
| 10 lb | 160 oz |
| 11 lb | 176 oz |
| 12 lb | 192 oz |
| 13 lb | 208 oz |
| 14 lb | 224 oz |
| 15 lb | 240 oz |
| 16 lb | 256 oz |
| 17 lb | 272 oz |
| 18 lb | 288 oz |
| 19 lb | 304 oz |
| 20 lb | 320 oz |
| 21 lb | 336 oz |
| 22 lb | 352 oz |
| 23 lb | 368 oz |
| 24 lb | 384 oz |
| 25 lb | 400 oz |
| 26 lb | 416 oz |
| 27 lb | 432 oz |
| 28 lb | 448 oz |
| 29 lb | 464 oz |
| 30 lb | 480 oz |
| 31 lb | 496 oz |
| 32 lb | 512 oz |
| 33 lb | 528 oz |
| 34 lb | 544 oz |
| 35 lb | 560 oz |
| 36 lb | 576 oz |
| 37 lb | 592 oz |
| 38 lb | 608 oz |
| 39 lb | 624 oz |
| 40 lb | 640 oz |
| 41 lb | 656 oz |
| 42 lb | 672 oz |
| 43 lb | 688 oz |
| 44 lb | 704 oz |
| 45 lb | 720 oz |
| 46 lb | 736 oz |
| 47 lb | 752 oz |
| 48 lb | 768 oz |
| 49 lb | 784 oz |
| 50 lb | 800 oz |
| 60 lb | 960 oz |
| 70 lb | 1,120 oz |
| 80 lb | 1,280 oz |
| 90 lb | 1,440 oz |
| 100 lb | 1,600 oz |
Frequently asked questions
How many Ounces are in 1 Pounds?
1 lb equals 16 oz.
How do I convert Pounds to Ounces?
Multiply the lb value by 16. Example: 25 lb = 400 oz.
What is 2.5 lb in oz?
2.5 lb = 40 oz.
Is the lb to oz conversion exact?
Yes for practical use: the factors come from international definitions, with rounding applied only for display.
Does the calculator work offline?
Yes. The conversion runs in your browser with JavaScript, so it works after the page has loaded, even without a connection.