Units

Most commonly, units of bitcoin are expressed in decimal exponents such as BTC ("bitcoins"), mBTC ("millibitcoins") and μBTC ("bits").

Decimal metric units

The BTC unit was chosen to represent a value of 10⁸ so as to give sub-unit precision rather than large whole numbers. Mirroring the standard Le Système International d'Unités, this allows for divisions of 1/10th (deci-bitcoins, dBTC), 1/100th (centi-bitcoins, cBTC), 1/1 000th (milli-bitcoins, mBTC), and 1/1 000 000 (micro-bitcoins, μBTC).

Bits

Many have adopted the practice of referring to the micro-bitcoin metric sub-unit as "bits".

Table of all units

This table is intended to include all well-defined units of bitcoin value, including less common and niche units.

Unit	Abbreviation	Decimal (BTC)	Alternate names	Info
Algorithmic maximum		20,999,999.9769		Calculation
tam-bitcoin		2,814,749.76710656		1,0000,0000 tonal
mega-bitcoin	MBTC	1,000,000		Rare in context
kilo-bitcoin	kBTC	1,000		Rare in context
hecto-bitcoin	hBTC	100		Rare
Initial block subsidy		50		Until block 210000
bong-bitcoin	ᵇTBC	42.94967296		1,0000 tonal
Current block subsidy		25	block	As of block 210000
deca-bitcoin	daBTC	10		Rare
mill-bitcoin	ᵐTBC	2.68435456		1000 tonal
bitcoin	BTC	1	coin	SI base unit
san-bitcoin	ˢTBC	0.16777216		100 tonal
deci-bitcoin	dBTC	0.1		Rare
ton-bitcoin	ᵗTBC	0.01048576		10 tonal
centi-bitcoin	cBTC	0.01	bitcent	Formerly frequent
milli-bitcoin	mBTC	0.001	millibit, millie	Occasional
bitcoin	TBC	0.00065536		Tonal base unit
bitcoin-ton	TBCᵗ	0.00004096		0.1 tonal
bitcoin-san	TBCˢ	0.00000256		0.01 tonal
micro-bitcoin	μBTC	0.000001	bit	Frequent
bitcoin-mill	TBCᵐ	0.00000016		0.001 tonal
		0.0000001	finney
bitcoin-bong	TBCᵇ	0.00000001		0.0001 tonal
		0.00000001	satoshi	Blockchain value

See also

• Tonal Bitcoin
• Satoshi (unit)