Hi Amplitude Community, 

Amplitude currently does not support currency conversion. If you receive revenue in different currencies, then we recommend normalizing to a single currency before you send us revenue data. Amplitude logs the exact revenue value sent to us and treats it as a numerical value (not a currency value). By default, the currency sign we display in the dashboard is the dollar sign, "$".

You can change this display under Organizational settings > Projects > Currency Display. Please check this doc for more information: https://help.amplitude.com/hc/en-us/articles/15581410157339. 

NOTE: Changing the currency display does not modify nor convert the underlying data. 

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Amplitude Team