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[1] bong-bitcoin ᵇTBC 42.94967296 1,0000 tonal Current block subsidy 6.25 block As of halving day 2020, block 630000 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[2] 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[3] bitcoin-bong TBCᵇ 0.00000001 0.0001 tonal sat 0.00000001 satoshi Blockchain value msat 0.00000000001 millisatoshi[4] Payment channel value

See also