Weight Converter
Articles, guides, and in-depth tips for the Weight Converter — everything you need to get the most out of it.
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A Bathroom Scale Measures Force, Not Mass — Why Your "Weight" Changes in Elevators, on the Moon, and in Space
You Don't Weigh Kilograms — You Have a Mass of Kilograms: And Other Weight Unit Confusions That Have Real Consequences
A kilogram is a unit of mass, but when you "weigh" yourself on a bathroom scale, you're measuring gravitational force being converted to mass units using Earth's g. Here's why mass vs weight conflation doesn't matter in everyday life but caused real aerospace disasters, why "stone" is used almost exclusively for human body weight in the UK, the tola's 11.6638g value (not the 10g approximation that causes gold pricing errors), and why "metric tonne vs short ton vs long ton" is a persistent international trade ambiguity.
Combat Sport Weight Classes, Weight Cutting, and Why Losing 10kg Overnight Is Dangerous
MMA fighters sometimes lose 10+ kg between weigh-in and competition through dehydration — competing at weights 10–15% above their weight class. Here's how combat sport weight classes work, the physiology and risks of extreme weight cutting, regulatory responses, and how powerlifting handles weight classes differently.
Troy Ounces, Gold Pricing, and Why Precious Metals Use a Different Weight System
A troy ounce (31.1g) is 9.7% heavier than an everyday ounce (28.35g) — and all precious metal pricing uses the troy system. Here's how gold prices work per gram and per tola, the three weight systems compared, and why karat means two completely different things.
Weight Converter — kg, lb, Stone, Metric Tonnes & Troy Ounces Explained
Learn weight unit conversions including the troy ounce vs regular ounce difference, the UK stone unit, US vs UK vs metric tonnes, and how to convert body weight, luggage limits, and precious metals accurately.
Weight Converter — kg, Pounds, Ounces, Tola & More Explained
Learn how weight units from milligrams to maunds relate to each other — including troy ounces, tolas, and stones — with real examples for gold, cooking, shipping, and body weight.
