You can convert a Number field to a Currency field but you cannot convert a Currency field to a Number field.

Name: You can convert a Number field to a Currency field but you cannot convert a Currency field to a Number field.
Brand: Quizplus
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Question

Quizplus · Accepted Answer

In many database and spreadsheet systems, you can convert data between Number and Currency fields, although the process and capabilities may vary. Converting from Currency to Number is typically possible, but you might lose currency-specific formatting or information.

You Can Convert a Number Field to a Currency Field