Loona Calculators
Convert pounds to ounces instantly — type any value and the result appears as you type. Below you will find the exact formula, a lb to oz conversion table and a worked example.
Formula: Ounces = pounds × 16. There are exactly 16 ounces in one pound — this is a definition, not an approximation.
Question: How many ounces is 5 lb — a small bag of flour in US stores?
Steps: Take the value in pounds: 5 lb. Apply the formula: Ounces = pounds × 16. That gives 5 → 80 oz (rounded to four decimal places).
Result: 5 lb = 80 oz.
| Pounds (lb) | Ounces (oz) |
| 0.5 lb | 8 oz |
| 1 lb | 16 oz |
| 2 lb | 32 oz |
| 3 lb | 48 oz |
| 5 lb | 80 oz |
| 10 lb | 160 oz |
| 20 lb | 320 oz |
| 50 lb | 800 oz |
| 100 lb | 1600 oz |
| 200 lb | 3200 oz |
Need a value that is not in the table — or the reverse direction? Use the converter at the top of this page, or the full Unit Converter for every unit in one place.
Multiply the value in pounds by 16: lb × 16 = oz. For example, 10 lb × 16 = 160 oz. The converter above does this instantly.
Exactly 16 oz (to four decimal places). The full relationship: Ounces = pounds × 16.
2.5 pounds = 40 ounces.
Reverse the formula above. For a quick check, divide by the same factor instead of multiplying.
No — this is the avoirdupois ounce of weight. A fluid ounce of water happens to weigh about 1.04 ounces, but the two units measure different things.
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