user1409: If I have 36,235.97 BTC, would I shorten that by writing that I have 36.2k BTC or would I write 36.2 kBTC?
It seems that latter is proper for SI units, while the former is used more often for money, at least in the U.S.

user196: Definitely 36.2k BTC.
As you noticed, it's what is most used for money anyway.
And, for the record, I'd never short lesser units as @Meni suggested, because it would only cause confusion: it's not a SI unit we are talking about, it's money, and money uses different conventions.

user575: I would write 36.2K BTC.
On the other hand, if I had 0.0362 BTC, I would write 36.2 mBTC.

1409: <p>If I have 36,235.97 BTC, would I shorten that by writing that I have <em>36.2k BTC</em> or would I write <em>36.2 kBTC</em>?</p>

<p>It seems that latter is proper for SI units, while the former is used more often for money, at least in the U.S.</p>
 196: <p>Definitely 36.2k BTC.</p>

<p>As you noticed, it's what is most used for money anyway.</p>

<p>And, for the record, I'd never short lesser units as @Meni suggested, because it would only cause confusion: it's not a SI unit we are talking about, it's money, and money uses different conventions.</p>
 575: <p>I would write 36.2K BTC.</p>

<p>On the other hand, if I had 0.0362 BTC, I would write 36.2 mBTC.</p>
