$1US, US$1, $1.00USD, $USD1.00, etc. ??

What is the correct/official way to denote currency of the United States?

Either $1US or $1.00US is what I see most often used.

I frequently see it written with the country/denomination first, such as

USD1.00 or US$1.00
EUR0.98
JPY121
NZD1.97 or NZ$1.97
Basically, either way is pretty easy to understand, as long as your consistent.

Of course, you may want to think twice about taking grammar or style advice from someone who can’t get your/you’re straight. :rolleyes:

This is a matter of style, so there is no one official way of representing currency.

The Chicago Manual of Style suggests: U.S. $2.47.

For less formal writing I would condense it to: US$2.47.

If this is for a college paper, then Turabian’s Manual or the MLA Style Manual or some other style specific to schools would need to be checked.

A common usage down here (in finance circles at least) is “USD 1.00”. “$US 1.00” is also widely used.

“$USD” seems to be a tautology to me: I read it as “dollars US dollars”.

“USD” is a standard currency abbreviation (others include AUD, CAD, UKP, EUR, NOK, MXP, and DEM – the pattern should be obvious although EUR violates it, and I’ve seen EUE as an alternative). If you use USD, do not use the as it is redundant. US is used before the figure (as in US$1.00) when it is necessary to differentiate between US and Canadian (which can be abbreviated C$, CAN$, or CDN$) or Australian (A$, AU$, or AUS$) dollars (or any of a dozen other nations that also use a currency called the ‘dollar’).

Narrad, the word you are looking for is “redundancy”. A “tautology” is a statement which is a priori true (such as “Either the car is red, or the car is not red.”)

Where’s that smiley when I’m looking for it…?

Ahh, here it is – :smack:

There is (as always) an international standard, called (in this case) ISO-4217.

Basically it’s the two-letter country code (as assigned by ISO-3166) followed by a single character for the currency. This then precedes the amount.

For example the Canadian currency should be called CAD, if you want to be standards compliant. (But then you would also use A4 paper , recognize that today is 2003-05-07 and use metric units - what I do, but maybe too much to hope for for the average 'merkin ;))