Pounds, kilograms, ounces, stones: every weight conversion, without doing the math.
Luggage limits, recipes, gym plates, medical doses: weight switches units at the worst possible moments. Your airline allows 23 kg, your American scale shows pounds, your British friend talks in stones — and 1 lb is 453.592 grams, a number nobody memorizes. That gap is exactly where expensive mistakes happen: overweight baggage fees, ruined baking, misread nutrition labels.
Every converter below gives you the exact figure, the formula behind it, and the quick mental tricks — like "divide by two, subtract ten percent" for pounds to kilograms — tested against real-world cases.
The conversions below cover the moments that actually cost money: airline luggage limits in kilograms, American recipes in ounces, British friends in stones. Each page shows the exact factor — 1 lb = 453.59237 g, no rounding — plus a table scaled to real quantities and the mental trick that saves you when your phone battery dies.
Are these converters really free? Yes — unlimited, no account, no paywall. CalculUnits is funded by non-intrusive ads only.
How accurate are the results? Every conversion uses the exact official factor from SI and NIST references, shown on each page so you can verify the math yourself.
Do my values leave my device? No — all calculations run in your browser. Nothing you type is ever sent anywhere.