Pounds to Ounces Converter
1 pound is exactly 16 ounces. To convert pounds to ounces, multiply by 16.
Sources: NIST SP 811, NIST Handbook 44 Updated
Result
1 lb = 16 oz
How to convert pounds to ounces
ounces = pounds × 16
1 pound is exactly 0.45359237 kilogram. 1 ounce is 1/16 pound, exactly 28.349523125 grams.
The factor is exact in both directions: 1 lb = 16 oz and 1 oz = 0.0625 lb. Nothing is rounded until you choose how many decimals to show.
Worked example: 2.5 lb
- Start with the value in pounds: 2.5 lb.
- Multiply by 16, because 1 pound = 16 ounces: 2.5 × 16 = 40 oz.
Pounds and ounces side by side
Pounds to ounces chart
Pounds from 1 to 100 converted to ounces with the exact factor, shown to five significant digits.
| lb | oz |
|---|---|
| 1 | 16 |
| 2 | 32 |
| 3 | 48 |
| 4 | 64 |
| 5 | 80 |
| 6 | 96 |
| 7 | 112 |
| 8 | 128 |
| 9 | 144 |
| 10 | 160 |
| 11 | 176 |
| 12 | 192 |
| 13 | 208 |
| 14 | 224 |
| 15 | 240 |
| 16 | 256 |
| 17 | 272 |
| 18 | 288 |
| 19 | 304 |
| 20 | 320 |
| 21 | 336 |
| 22 | 352 |
| 23 | 368 |
| 24 | 384 |
| 25 | 400 |
| lb | oz |
|---|---|
| 26 | 416 |
| 27 | 432 |
| 28 | 448 |
| 29 | 464 |
| 30 | 480 |
| 31 | 496 |
| 32 | 512 |
| 33 | 528 |
| 34 | 544 |
| 35 | 560 |
| 36 | 576 |
| 37 | 592 |
| 38 | 608 |
| 39 | 624 |
| 40 | 640 |
| 41 | 656 |
| 42 | 672 |
| 43 | 688 |
| 44 | 704 |
| 45 | 720 |
| 46 | 736 |
| 47 | 752 |
| 48 | 768 |
| 49 | 784 |
| 50 | 800 |
| lb | oz |
|---|---|
| 51 | 816 |
| 52 | 832 |
| 53 | 848 |
| 54 | 864 |
| 55 | 880 |
| 56 | 896 |
| 57 | 912 |
| 58 | 928 |
| 59 | 944 |
| 60 | 960 |
| 61 | 976 |
| 62 | 992 |
| 63 | 1,008 |
| 64 | 1,024 |
| 65 | 1,040 |
| 66 | 1,056 |
| 67 | 1,072 |
| 68 | 1,088 |
| 69 | 1,104 |
| 70 | 1,120 |
| 71 | 1,136 |
| 72 | 1,152 |
| 73 | 1,168 |
| 74 | 1,184 |
| 75 | 1,200 |
| lb | oz |
|---|---|
| 76 | 1,216 |
| 77 | 1,232 |
| 78 | 1,248 |
| 79 | 1,264 |
| 80 | 1,280 |
| 81 | 1,296 |
| 82 | 1,312 |
| 83 | 1,328 |
| 84 | 1,344 |
| 85 | 1,360 |
| 86 | 1,376 |
| 87 | 1,392 |
| 88 | 1,408 |
| 89 | 1,424 |
| 90 | 1,440 |
| 91 | 1,456 |
| 92 | 1,472 |
| 93 | 1,488 |
| 94 | 1,504 |
| 95 | 1,520 |
| 96 | 1,536 |
| 97 | 1,552 |
| 98 | 1,568 |
| 99 | 1,584 |
| 100 | 1,600 |
ounces = pounds × 16. Factors: NIST SP 811, NIST Handbook 44. unitcheck.net/weight/pounds-to-ounces/
Common values
| Pounds | Ounces | What it is |
|---|---|---|
| 0.5 lb | 8 oz | |
| 1 lb | 16 oz | |
| 2 lb | 32 oz | |
| 5 lb | 80 oz | |
| 10 lb | 160 oz |
Going the other way? Use the Ounces to Pounds converter.
Frequently asked questions
How many ounces are in 1 pound?
1 pound is exactly 16 ounces. 1 pound is exactly 0.45359237 kilogram.
How do I convert pounds to ounces?
Multiply by 16: ounces = pounds × 16. For example, 2.5 lb = 40 oz.
How many pounds are in 1 ounce?
1 ounce is exactly 0.0625 pounds. To go the other way, use the ounces to pounds converter.
Is the lb to oz conversion exact?
Yes. 1 pound is exactly 0.45359237 kilogram. The factor 16 follows from the definitions, so the only rounding is in the number of decimals you display.
Sources
- NIST Special Publication 811, Guide for the Use of the International System of Units, Appendix B.8: Factors for Units Listed Alphabetically — exact factors are printed in bold in the NIST table (checked October 12, 2026)
- NIST Handbook 44 (2026), Appendix C: General Tables of Units of Measurement — US customary units and their exact relationships (checked October 12, 2026)