I am buying the BTC in Australian Dollars (AUD):
I want to convert this rate (
BTC/AUD) to American Dollars (USD).
So, I have the following rate:
(BTC/AUD) / BUSD
What's the name for rates like this? Maybe, cross rate?
There is no name for it because there's no such thing.
sell USD and get AUD
sell USD and get BTC
sell BTC and get AUD
sell X and get Y
In each case, depending on your volume, you will get a certain price.
What you are describing doesn't exist.
Also, you cannot "convert" a price. What does that mean? Say I told you I sold a house in Smith St for $Y. And you said "oh I want to
convert that to a price for a house in Jones St." What does it mean? It has no meaning.
(Also to be clear. When you say you want to convert "a rate"... "rate" is literally another word for "price". If you buy 200 units of BTC and you paid 333 units of CHF, the price you paid was "333". Rate is just the same: 333/200. You can't "convert" a rate, it's meaningless.)