Bitcoin unit converter
Convert amounts between satoshis, bits, millibitcoin and whole bitcoin, the way wallets and the Lightning network count them.
That's 100× as much as a small Lightning tip, while the block reward since 2024 is 3,125× more.
What it means
How much bitcoin is that?
Units only, not money: the price of bitcoin changes by the minute, so check a live exchange rate for its value.
Every unit
That amount in every unit
Learn
Three things worth knowing
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Move the point eight places
1 BTC = 100,000,000 sats. 0.001 BTC is 100,000 sats; 21,000 sats is 0.00021 BTC.
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Named after the creator
The name “satoshi” for the smallest unit was proposed on a forum in 2010, after Satoshi Nakamoto, who published the bitcoin paper in 2008.
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mBTC is not µBTC
A millibitcoin is a thousandth of a bitcoin, 100,000 sats; a bit (µBTC) is a millionth, 100 sats.
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Background
About bitcoin units
Bitcoin is divisible to eight decimal places. The smallest step, 0.00000001 BTC, is called a satoshi after the system’s pseudonymous creator. Wallets often show amounts in sats, because they are easier to read than long decimals.
A bit is a millionth of a bitcoin (100 sats), and the Lightning network settles in millisatoshis, a thousandth of a sat.