Pounds and Ounces Calculator — lb oz to kg, g, Stones
Enter a weight in pounds and ounces together — for example, a baby weighing 7 lb 11 oz — and instantly convert to kilograms, grams, stones and total ounces.
lb
oz
Combined weight in ounces
- 1
Pounds → ounces
10 × 16 = 1601 pound = 16 avoirdupois ounces. - 2
Add extra ounces
160 + 8 = 168
Hoe werkt deze rekenmachine?
Total oz = lb × 16 + oz. To convert to kg: total oz × 0.02835. 1 stone = 14 lb. Enter your pounds and ounces to get kilograms, grams and stones all at once — useful for baby weights, body weight and cooking conversions.
Formule
How this is calculated
The international avoirdupois pound is defined as exactly 453.592 37 grams, giving 1 ounce = 453.592 37 ÷ 16 = 28.349 523 125 g. All conversions in this calculator use those exact values, so results are accurate to full floating-point precision.
The compound format "X lb Y oz" is common for body weight in the US and UK (especially for newborn babies), and for cooking weights in recipes. The calculator first converts the two-part input to a single total-ounce figure, then converts that to decimal pounds, kilograms, grams and the stones-pounds-ounces triple (1 stone = 14 lb).
The stone unit is still widely used for adult body weight in the UK and Ireland; it is not used in the US. There are exactly 14 pounds to a stone, so 10 stone 6 lb = 146 lb = 66.224 kg.
Veelgestelde vragen
There are exactly 16 avoirdupois ounces in one pound. This is the standard used in the US and UK for everyday weight. (The troy system, used for precious metals, uses 12 troy ounces per troy pound — a different unit entirely.)
Total ounces = 7 × 16 + 11 = 123 oz. Kilograms = 123 × 0.0283495 = 3.487 kg (approximately). Enter 7 lb and 11 oz above to see the exact result.
A stone equals exactly 14 pounds (224 ounces, ≈ 6.35 kg). It is used for human body weight in the United Kingdom and Ireland but is not commonly used in the US or metric countries. The calculator automatically expresses your weight in stones, remaining pounds and remaining ounces.
Ook bekend als
TG we-Calculate Editorial Team. (2026). Pounds and Ounces Calculator — lb oz to kg, g, Stones [Online calculator]. TG we-Calculate. https://we-calculate.com/nl/calculator/pounds-ounces-calculator
TG we-Calculate Editorial Team. "Pounds and Ounces Calculator — lb oz to kg, g, Stones." TG we-Calculate. 2026. https://we-calculate.com/nl/calculator/pounds-ounces-calculator.
TG we-Calculate Editorial Team, "Pounds and Ounces Calculator — lb oz to kg, g, Stones," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/nl/calculator/pounds-ounces-calculator
@misc{wecalculate_pounds_ounces_calculator, title = {Pounds and Ounces Calculator — lb oz to kg, g, Stones}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/nl/calculator/pounds-ounces-calculator}}, year = {2026}, note = {TG we-Calculate} }
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