OAK BROOK, ILL. — McDonald’s Corp. said global comparable sales increased 6% in April and 4.7 percent year-to-date. System-wide sales for restaurants worldwide increased 12.7 percent, or 7.5 percent in constant currencies during April.

“Our sales momentum continues as we focus on optimizing the menu with the right food and beverage offerings, modernizing the restaurant experience by upgrading our customer service and restaurant designs and broadening our accessibility through convenience and everyday value,” said Jim Skinner, chief executive officer. “The demand for McDonald’s continues to grow, reflecting the success of our efforts to provide an enjoyable experience for customers around the world.”

U.S. comparable sales rose 4 percent on the popularity of McCafe beverages, the breakfast menu and core products, including the Big Mac and Quarter Pounder, the company said.

European comparable sales were up 6.5 percent on performance in the United Kingdom, France and Russia. Premium beef and chicken options, dessert offerings and the benefit of restaurant reimaging also helped boost European results. Also in April, McDonald’s said comparable sales increased 6.5 percent in Asia/Pacific, Middle East and Africa with sales boosted by performance in China, Japan and Australia.