Stones to Milligrams

Stone

A stone (st) is a unit of weight used primarily in the United Kingdom and Ireland, especially for measuring body weight. One stone equals 14 pounds, or roughly 6.35 kilograms. Because it provides a convenient number for typical human weights, stones remain popular in health, sports, and everyday conversations.

Although stones are not used in the metric system or the United States, conversions are often needed for travel, fitness tracking apps, or international communication. A converter helps provide a quick translation to pounds or kilograms.

Milligram

A milligram (mg) is a very small metric unit of mass equal to one-thousandth of a gram. It is commonly used in medicine, nutrition, and science to measure tiny quantities where precision is crucial. Vitamins, pharmaceuticals, and food additives often list dosage amounts in milligrams because even a small difference can matter.

Milligrams help prevent rounding errors when grams would be too large of a unit. While metric conversions are simple — 1,000 milligrams in a gram — switching to ounces or pounds requires careful calculation, making a converter especially useful.