Units
Bitcoin sub-units
| 1.00 | One bitcoin (abbreviation BTC) |
| 0.01 | One bitcent |
| 0.001 | One millibitcoin (nickname "Millie") |
| 0.000001 | One microbitcoin (nickname "Mike") |
| 0.00000001 | One satoshi (the minimum Bitcoin base unit) |
This terminology is unofficial, but the terms "bitcent" and "satoshi" seem to have been accepted into common usage.
Tonal sub-units
Tonal sub-units are a hexadecimal system and are not widely used.
| Abbreviation | Pronunciation | Decimal (BTC) | Tonal (TBC) | Tonal, as Hexadecimal |
|---|---|---|---|---|
| Maximum BitCoins ever[1] | 20,999,999.9769 | 7,750,54.00 | 7,75f0,59e4.009 | |
| Tam-BitCoin | 2,814,749.76710656 | 1,0000,0000 | 1,0000,0000 | |
| MBTC | Mega-BitCoin | 1,000,000 | 593,1079.4 | 5af3,107a.4 |
| kBTC | Kilo-BitCoin | 1,000 | 17,4876.8 | 17,4876.e8 |
| hBTC | Hecto-BitCoin | 100 | 2,540.4 | 2,540b.e4 |
| Initial block reward | 50 | 1,2905.2 | 1,2a05.f2 | |
| ᵇTBC | Bong-BitCoin | 42.94967296 | 1,0000 | 1,0000 |
| daBTC | Deca-BitCoin | 10 | 39.9 | 3b9a.ca |
| ᵐTBC | Mill-BitCoin | 2.68435456 | 1000 | 1000 |
| BTC | *BitCoin | 1 | 55.1 | 5f5.e1 |
| ˢTBC | San-Bitcoin | 0.16777216 | 100 | 100 |
| dBTC | Deci-BitCoin | 0.1 | 8.68 | 98.968 |
| ᵗTBC | Ton-BitCoin | 0.01048576 | 10 | 10 |
| cBTC | Centi-BitCoin | 0.01 | .424 | f.424 |
| mBTC | Milli-BitCoin | 0.001 | 1.869 | 1.86a |
| TBC | *BitCoin | 0.00065536 | 1 | 1 |
| TBCᵗ | BitCoin-ton | 0.00004096 | 0.1 | 0.1 |
| TBCˢ | BitCoin-san | 0.00000256 | 0.01 | 0.01 |
| μBTC | Micro-BitCoin | 0.000001 | 0.0064 | 0.0064 |
| TBCᵐ | BitCoin-mill | 0.00000016 | 0.001 | 0.001 |
| TBCᵇ | BitCoin-bong | 0.00000001 | 0.0001 | 0.0001 |
* Tonal BitCoin and Decimal BitCoin can be differentiated by the pronunciation of the numbers. "One bitcoin", "two bitcoin", etc is decimal, but "an bitcoin", "de bitcoin" is tonal.
