Weight Converter & Mass Calculator

Technically, mass is the amount of matter in an object (constant), while weight is the force of gravity on that object (changes on the moon). However, in daily life, we use them interchangeably.

There are approximately 2.20462 pounds in 1 kilogram. A quick mental math trick is to multiply kg by 2, then add 10% (e.g., 50kg * 2 = 100 + 10 = 110 lbs approx).

A Stone (st) is an imperial unit used mainly in the UK and Ireland for body weight. 1 Stone equals 14 Pounds or approximately 6.35 Kilograms.

The US retained the British Imperial system (Customary Units) when other countries switched to Metric in the 19th/20th centuries due to industrial tooling costs and tradition.

There are 28.3495 grams in an imperial ounce. This is crucial for converting US recipes to Metric standards.

A Metric Ton (tonne) is exactly 1,000 Kilograms. It is slightly smaller than an Imperial "Long Ton" (1,016 kg) and larger than a US "Short Ton" (907 kg).

Yes. 1 kg is roughly 2.2 lbs. So 1 kg is heavier than 2 lbs by about 0.2 lbs (roughly 90 grams).

This tool uses high-precision floating-point math with conversion factors up to 9 decimal places, ensuring accuracy suitable for scientific and industrial use.

Divide by 1,000. 1,000 milligrams = 1 gram. For example, 500mg is 0.5g.

The abbreviation is "lb", which comes from the Latin word "libra" (scales/balance). The symbol "#" is also sometimes used in the US (e.g., 5# bag of sugar).