The euro rose above $1.12 for the first time in more than a month, while the yen hit its strongest in three weeks.
The dollar recovered after its poorest weekly performance in three months, while the yen weakened after surging more than 3 percent.
The yen soared against the dollar after a round of modest monetary policy easing from the Bank of Japan disappointed investors.
The dollar fell against the yen as expectations faded of the Bank of Japan delivering a radical stimulus package this week.
The U.S. dollar gained against the euro and the yen after the Federal Reserve left the federal funds rates unchanged on Wednesday.
The yen hit a high against the euro and rose against the dollar as traders lower expectations of a Japanese stimulus injection.
The pound is expected to push even lower, according to currency analysts, as the first signs emerged of the impact it's giving to the business sector.
The dollar inched up against the yen ahead of meetings at the Bank of Japan and the Fed which investors expect to be dollar-positive.
The dollar index also hit its highest level since March.
The dollar fell after a six-week high against the yen, while the Euro showed little change after ECB keeps policy unchanged.
UBS WM's Wayne Gordon says the Fed might hike rates as soon as December because of improving U.S. data, which might lead to an unwinding of carry trades.
The dollar hit a four-month high against a basket of currencies, bolstered by strong U.S. data and expectations of Fed rate rises.
The dollar rose against a basket of major currencies after U.S. housing starts rose by more than expected in June.
The Yen slips broadly as Turkey quells an attempted military coup, while calm in UK prompts sterling bump.
The British pound could be showing signs of a false dawn, according to currency analysts, who suggest that a recent rally could soon give way to more bouts of heavy selling.
The dollar spiked against the Turkish lira after gunfire was heard in the capital of Ankara on Friday.
The Bank of England surprised market by holding fire on post-referendum rate cut.
The dollar falls while the Bank of Canada announced that it will hold interest rates.
The dollar eased slightly against the yen on Wednesday, but remained close to 2-1/2-week highs.
The yen fell against the dollar after the Japanese ruling coalition's victory boosted hopes for more monetary stimulus.