user5: I am aware that Satoshi Nakamoto is the author of the paper that originated Bitcoin and the creator of the original bitcoin client. However, I often hear the term Satoshi as if it was a monetary unit.
What is a Satoshi?

user67175: If you need formula
108 Satoshis == 1 BTC
or in Python
def btc2satoshi(btc: float) -> int:
  return int(btc * 10**8)

BTC = 1.0
print(btc2satoshi(BTC))


user73: A Satoshi is a one hundred millionth of a Bitcoin. 
Bitcoins are delimited to eight decimal places so even if Bitcoins are worth $1,000,000 each, you can still do penny transactions.

user12534: A Satoshi is 0.00000001 BTC and currently the smallest transaction unit.  
If a Satoshi was equivalent to one penny, a microBTC would be equivalent to one dollar, and one BTC would be equivalent to 1,000,000 dollars.
With one BTC on the order of $1,000 USD, a Satoshi is equivalent to .001 penny

user7222: 1 mBTC  = 0.001 BTC
1 mBTC  = 100,000 Satoshis

1 uBTC  = 0.000001 BTC
1 μBTC  = 100 Satoshis

1 Satoshi       = 0.00000001 BTC
100 Satoshis    = 0.000001 BTC
1,000 Satoshis  = 0.00001 BTC
10,000 Satoshis = 0.0001 BTC

1 BTC = 100,000,000 Satoshis
1 BTC = 1,000,000 μBTC
1 BTC = 1000 mBTC

user38: A Satoshi is the smallest fraction of a Bitcoin that can currently be sent: 0.00000001 BTC, that is, a hundredth of a millionth BTC. In the future, however, the protocol may be updated to allow further subdivisions, should they be needed.
Further examples of units

1 BTC = 1,000 mBTC (millibitcoin)
1 BTC = 1,000,000 μBTC (microbitcoin)
1 BTC = 100,000,000 Satoshis
1 mBTC = 100,000 Satoshis
1 μBTC (microbitcoin) = 100 Satoshis


5: <p>I am aware that Satoshi Nakamoto is the author of the paper that originated Bitcoin and the creator of the original bitcoin client. However, I often hear the term <em>Satoshi</em> as if it was a monetary unit.</p>

<p>What is a <em>Satoshi</em>?</p>
 67175: <p>If you need formula</p>
<p><strong>10<sup>8</sup> Satoshis == 1 BTC</strong></p>
<p>or in Python</p>
<pre><code>def btc2satoshi(btc: float) -&gt; int:
  return int(btc * 10**8)

BTC = 1.0
print(btc2satoshi(BTC))
</code></pre>
 73: <p>A Satoshi is a one hundred millionth of a Bitcoin. </p>

<p>Bitcoins are delimited to eight decimal places so even if Bitcoins are worth $1,000,000 each, you can still do penny transactions.</p>
 12534: <p>A Satoshi is 0.00000001 BTC and currently the smallest transaction unit.  </p>

<p>If a Satoshi was equivalent to one penny, a microBTC would be equivalent to one dollar, and one BTC would be equivalent to 1,000,000 dollars.</p>

<p>With one BTC on the order of $1,000 USD, a Satoshi is equivalent to .001 penny</p>
 7222: <p>1 mBTC  = 0.001 BTC</p>

<p>1 mBTC  = 100,000 Satoshis</p>

<hr>

<p>1 uBTC  = 0.000001 BTC</p>

<p>1 μBTC  = 100 Satoshis</p>

<hr>

<p>1 Satoshi       = 0.00000001 BTC</p>

<p>100 Satoshis    = 0.000001 BTC</p>

<p>1,000 Satoshis  = 0.00001 BTC</p>

<p>10,000 Satoshis = 0.0001 BTC</p>

<hr>

<p>1 BTC = 100,000,000 Satoshis</p>

<p>1 BTC = 1,000,000 μBTC</p>

<p>1 BTC = 1000 mBTC</p>
 38: <p>A <a href="https://en.bitcoin.it/wiki/FAQ#What_do_I_call_the_various_denominations_of_bitcoin.3F">Satoshi</a> is the smallest fraction of a Bitcoin that can currently be sent: 0.00000001 BTC, that is, a hundredth of a millionth BTC. In the future, however, the protocol may be updated to allow further subdivisions, should they be needed.</p>

<p><strong>Further examples of <a href="https://en.bitcoin.it/wiki/Units">units</a></strong></p>

<ul>
<li>1 BTC = 1,000 mBTC (millibitcoin)</li>
<li>1 BTC = 1,000,000 μBTC (microbitcoin)</li>
<li>1 BTC = 100,000,000 Satoshis</li>
<li>1 mBTC = 100,000 Satoshis</li>
<li>1 μBTC (microbitcoin) = 100 Satoshis</li>
</ul>
