The first currency in a Currency Pair. It shows how much the base currency is worth as measured against the second currency. For example, if the USD/CHF rate equals 1.6215 then one USD is worth CHF 1.6215 In the FX markets, the US Dollar is normally considered the ‘base’ currency for quotes, meaning that quotes are expressed as a unit of 1 USD per the other currency quoted in the pair. The primary exceptions to this rule are the British Pound, the Euro and the Australian Dollar.