Apple has announced the financial results for its fiscal 2012 second quarter that ended March 31, 2012. The company posted quarterly revenue of US$39.2 billion and quarterly net profit of $11.6 billion, or $12.30 per diluted share.

These results compare to revenue of $24.7 billion and net profit of $6.0 billion, or $6.40 per diluted share, in the year-ago quarter. Gross margin was 47.4% compared to 41.4% in the year-ago quarter. International sales accounted for 64% of the quarter’s revenue.

Apple sold 35.1 million iPhones in the quarter, representing 88% unit growth over the year-ago quarter. The company sold 11.8 million iPads during the quarter, a 151% unit increase over the year-ago quarter. Apple sold four million Macs during the quarter, a 7% unit increase over the year-ago quarter. Apple sold 7.7 million iPods, a 15% unit decline from the year-ago quarter.

“Our record March quarter results drove $14 billion in cash flow from operations,” says Apple Chief Financial Officer Peter Oppenheimer. “Looking ahead to the third fiscal quarter, we expect revenue of about $34 billion and diluted earnings per share of about $8.68.”