Weight & Mass Converters
These tools cover everyday mass conversions between SI units and international avoirdupois pounds and ounces. The underlying factors are shown so the result can be independently checked. The international pound is defined as exactly 0.45359237 kilograms, and the everyday avoirdupois system uses exactly 16 ounces per pound. Mass ounces are not fluid ounces: one measures mass, while the other measures volume, so Solveberry keeps those families on separate calculator and reference pages.
Key reference points
| Reference | Equivalent / method |
|---|---|
| 1 lb | 0.45359237 kg exactly |
| 1 lb | 16 oz exactly |
| 1 oz | 28.349523125 g exactly |
Mass Unit Standards
Reference international pound, avoirdupois ounce, kilogram and gram definitions, including the distinction between mass ounces and fluid ounces.
Read the reference guideTools in this topic
Ounces to Pounds Converter (oz to lb)
Convert ounces (oz) to pounds (lb) or pounds to ounces instantly. 16 oz = 1 lb exactly; 32 oz = 2 lb. Includes a conversion table and reverse conversion.
WeightKilograms to Pounds Converter (kg to lbs)
Convert kilograms to pounds (kg to lbs) or pounds to kilograms (lbs to kg) using the exact international avoirdupois pound definition.
WeightGrams to Ounces Converter (g to oz)
Convert grams and avoirdupois ounces using the exact international avoirdupois ounce definition.
How Solveberry handles this topic
Each calculator keeps its formula visible, links to related calculations, and avoids separate reverse-direction pages. When regional definitions can change a result, the relevant standard is selected explicitly.