Scales often show decimal pounds, but birth weights, recipes and fishing records use pounds and ounces. Because a pound has 16 ounces, 0.5 lb is 8 oz, not 5.
How to use the Pounds and Ounces Calculator
- Weight in decimal pounds
- Or: pounds
- and ounces
- Every result field is editable: type into Total ounces or any other result and Weight in decimal pounds plus every other field update to match.
Results update as you type, and every field accepts the units shown in its menu.
How it works
The whole-number part stays as pounds; the decimal part is multiplied by 16 to give ounces. The second section does the reverse.
Inputs explained
| Field | What to enter |
|---|---|
| Weight in decimal pounds | A number |
| Or: pounds | A number |
| and ounces | A number |
What each result means
- Whole pounds = floor([Weight in decimal pounds])
- and ounces = ([Weight in decimal pounds] – floor([Weight in decimal pounds])) × 16
- Total ounces = [Weight in decimal pounds] × 16
- In kilograms = [Weight in decimal pounds] × 0.45359237
- Pounds + ounces as decimal pounds = [Or: pounds] + [and ounces] ÷ 16
- Pounds + ounces in grams = ([Or: pounds] + [and ounces] ÷ 16) × 453.59237
Formula
ounces = (decimal pounds − whole pounds) × 16decimal pounds = pounds + ounces ÷ 16Worked example
Inputs — Weight in decimal pounds: 7.4; Or: pounds: 7; and ounces: 6.
Results — Whole pounds = 7; and ounces = 6.4 oz; Total ounces = 118.4 oz; In kilograms = 3.3566 kg; Pounds + ounces as decimal pounds = 7.375 lb; Pounds + ounces in grams = 3,345.2 g.
Frequently asked questions
How many ounces is 0.4 lb?
6.4 oz.
What is 8 lb 4 oz in decimal pounds?
8.25 lb.
What formula does the Pounds and Ounces Calculator use?
ounces = (decimal pounds − whole pounds) × 16.