> ## Documentation Index
> Fetch the complete documentation index at: https://docs.x.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Currency

> The type of a currency is identified using ISO-4217. This is a three-letter string like USD or EUR. The value of a currency is represented in micros.

The type of a currency is identified using [ISO-4217](http://en.wikipedia.org/wiki/ISO_4217). This is a three-letter string like `USD` or `EUR`. The value of a currency is represented in micros. For USD, \$5.50 is encoded as 5.50\*1e6, or 5,500,000. To represent a “whole value”, you need to multiply the local micro by 1e6 (1\_000\_000) for all currencies.

The Ads API recognizes official currencies of all countries where the X SMB Ads product is available. For a complete list of these countries, please click [here](https://business.x.com/en/help/overview/about-eligibility-for-twitter-ads.html).

Most currencies have a “precision” of two (like USD: \$1.23).

* `AED`, `VEF`, `PKR`, `IDR`, `HKD`, `QAR`, `PHP`, `NZD`, `INR`, `EUR`, `ARS`, `THB`, `MXN`, `EGP`, `DZD`, `SAR`, `LBP`, `COP`, `TRY`, `SGD`, `MAD`, `AUD`, `USD`, `MYR`, `CAD`, `BRL`, `GBP`.

The following currencies don’t use a decimal:

* `VND`, `KRW`, `CLP`, `JPY`

And these use three decimal places:

* `KWD`, `IQD`, `BHD`, `TND`

The usage of currency is accomplished through [funding instruments](/x-ads-api/introduction).