The dollar has gained against other major currencies on the view that expected Fed interest rate increases will boost the greenback by driving investment flows into the United States.
The dollar slipped against the rouble, meanwhile, and was last down 4.35 percent against the Russian currency to trade at 59.28 roubles. The rouble has seen intense selling pressure this week, and at one point was down about 20 percent against the dollar.
Analysts attributed the dollar's decline against the rouble to a rebound in oil prices and Russian Finance Minister Anton Siluanov confirming his ministry had sold foreign currency.
Expectations that exporters will increase dollar sales also helped the rouble.
Sales of oil and gas are Russia's chief source of export revenue.
The dollar was last up 0.12 percent against the Swiss franc at 0.9810 franc, off a 28-month high of 0.9847 touched Thursday. The dollar was last up 0.48 percent against the yen at 119.38 yen after hitting a more than one-week high of 119.50.
The U.S. dollar index, which measures the greenback against a basket of six major currencies, was last up 0.18 percent at 89.394, its highest level since March of 2009.
More on foreign exchange.