Bit

A bit is a unit of bitcoin equal to one millionth of a coin, or 100 satoshis. One bitcoin contains exactly 1,000,000 bits. The unit was proposed in the mid 2010s as a friendlier denomination for everyday pricing, since quoting small purchases in whole bitcoin produced awkward strings of leading zeros.

Why it matters

Denominations shape how people perceive money. Research on unit bias suggests buyers prefer owning whole units of a thing, and a currency whose common transactions read as 0.00042 units feels unusable to newcomers. Bits were an attempt to fix that: a coffee priced in bits is a small whole number, and the term maps neatly onto metric prefixes, with one bit equal to one microbitcoin. In practice the unit never achieved broad adoption. The community largely settled on the satoshi, the smallest indivisible unit at one hundred millionth of a bitcoin, as the standard small denomination.

In the gold vs bitcoin debate

Divisibility is one of bitcoin's clearest advantages over physical gold. Gold can be measured in troy ounces, grams, or grains, but physically dividing it for small payments is impractical, which historically pushed gold economies toward paper claims and token coinage. Bitcoin divides natively into 100 million satoshis per coin, so units like the bit are purely a display choice, requiring no assayer, mint, or custodian to make small value transferable.