The dollar rose to a one-week high against a basket of major currencies on Wednesday, boosted by hawkish comments from U.S. Federal Reserve officials.
The dollar index, which tracks the U.S. currency against six major rivals, rose about 0.4 percent to 96.05, the highest since March 16.
Several members of the U.S. central bank in recent days have suggested the Fed should move to raise rates. Higher rates make U.S. investments more attractive against other currencies and would be expected to support the dollar.
The dollar rose against the yen, moving near a one-week high against the Japanese currency and turning positive for the month. It was last up 0.1 percent at 112.41 yen. It also hit one-week highs against the euro and sterling.