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Weight
Convert a weight in pounds and ounces to kilograms, grams, and total ounces, or convert kilograms back into pounds and ounces. Great for baby weights and parcels.
In metric
3.4 kg
Pounds and ounces combine into a single weight by converting the pounds to ounces (×16) and adding the ounces. One pound is 0.453592 kg, so the metric conversion follows directly.
7 lb 8 oz is (7 × 16 + 8) = 120 oz, which is 120 × 0.0283495 = 3.40 kg.
There are 16 ounces in a pound and 1 lb = 0.45359237 kg exactly. To convert, turn everything into ounces (pounds × 16 + ounces), then multiply by 28.3495 for grams. Hospitals in the US record newborn weights in pounds and ounces, while UK, Canadian and Australian hospitals use grams.
| Weight | Metric |
|---|---|
| 5 lb 8 oz | 2.49 kg (2,495 g) |
| 6 lb 0 oz | 2.72 kg (2,722 g) |
| 6 lb 12 oz | 3.06 kg (3,062 g) |
| 7 lb 0 oz | 3.18 kg (3,175 g) |
| 7 lb 8 oz | 3.4 kg (3,402 g) |
| 8 lb 0 oz | 3.63 kg (3,629 g) |
| 8 lb 13 oz | 4 kg (3,997 g) |
| 9 lb 4 oz | 4.2 kg (4,196 g) |
| Ounces | Decimal pounds | Ounces | Decimal pounds |
|---|---|---|---|
| 1 oz | 0.0625 lb | 9 oz | 0.5625 lb |
| 2 oz | 0.125 lb | 10 oz | 0.625 lb |
| 3 oz | 0.1875 lb | 12 oz | 0.75 lb |
| 4 oz | 0.25 lb | 14 oz | 0.875 lb |
| 6 oz | 0.375 lb | 15 oz | 0.9375 lb |
| 8 oz | 0.5 lb | 16 oz | 1 lb |
Multiply the decimal part by 16. For example, 2.3 lb = 2 lb + 0.3 × 16 = 2 lb 4.8 oz. Shipping scales and deli counters often show decimal pounds, while baby scales and recipes use pounds and ounces.
Add the pounds and ounces separately, then turn every 16 ounces into a pound: 3 lb 10 oz + 2 lb 9 oz = 5 lb 19 oz = 6 lb 3 oz.
Total ounces × 0.0283495. 7 lb 8 oz = 120 oz = 3.4 kg.
16 ounces.
3.4 kg (3,402 g).
Multiply the decimal part by 16. 0.75 lb is 12 oz, so 3.75 lb is 3 lb 12 oz.
About 3,289 grams (116 oz × 28.35).