Cramer: Give us a Greece decision within 48 hours

Cramer on Germany and Greece

CNBC's Jim Cramer is worried about Greece and the U.S. dollar.

On Tuesday, he said a decision on whether the country will stay in the euro zone needs to be made as soon as possible to prevent further uncertainty.

"If they stay or leave, what we want is a decision in the next 48 hours," he said in an interview on CNBC's "Squawk on the Street." "In 48 hours, the euro would go back up and we would not be faced with this tremendous number-cutting thing when we come to earnings."

Read MoreChances of Grexit 40%: Billionaire Wilbur Ross

The unofficial start to earnings season begins Wednesday when Alcoa reports after the bell. Cramer is worried the strong dollar will weigh heavily on earnings results from multinationals.

"You're going to have to cut numbers for every international company," he said.

Louisa Gouliamaki | AFP | Getty Images

Cramer also spoke about Germany's role in the Greek debt crisis and how it "fears radical left-wing governments being elected in these other countries."

"Germans are the big winners if the euro goes down. The Germans win no matter what," he said.