Style Guide > 1 Formatting > [1.69] Currency

[1.69] Currency1.70 Rounding currencyWhen quoting numbers from another source, do not round unless the number is intended to be generalized. Otherwise, if the exact number is not material, round to two or fewer significant figures after the decimal point. Always round numbers to the same precision within the same category.If more than one currency is used in a document and any one needs to be defined by its three-letter currency code (because its symbol is not well-known), then use codes instead of symbols with all currencies—that is, AUD2,000 instead of A$2,000). A full list of currency codes can be found at http://www.xe.com. The standard symbols and codes for some frequently used currencies are given in the following table.

1.75 Exchange ratesIn general, show the conversion rate to three significant figures. If the conversion rate is less than 0.01, multiply the unit reference by 100, 1000, or as required to give a rate above 0.01. Also see Currency abbreviations.

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