how do you calculate the usdx index price 
the usdx is based on a basket of six currencies with different weightings see above the index calculation is simply the weighted average of the u s dollar exchange rates against these currencies normalized by an indexing factor which is 50 1435 5usdx 50 14348112 eurusd 0 576 usdjpy 0 136 gbpusd 0 119 usdcad 0 091 usdsek 0 042 usdchf 0 036the bottom linethe u s dollar index usdx is a relative measure of the u s dollars usd strength against a basket of six influential currencies including the euro pound yen canadian dollar swedish korner and swiss franc the index was created in 1973 but remains useful to this day the usdx can be used as a proxy for the health of the u s economy and traders can use it to speculate on the dollar s change in value or as a hedge against currency exposure elsewhere 