Analysts surveyed by Thomson Reuters expected earnings of 41 cents per share on revenue of $17.63 billion. Kroger reported second-quarter revenue of $18.1 billion, up nearly 12 percent.
The company says sales at stores open at least five quarters, considered a key indicator of a retailer's strength, rose 4.7 percent excluding fuel, and 9.7 percent including fuel sales for the quarter.
Kroger confirmed its fiscal year 2008 earnings guidance of $1.85 to $1.90 per share. Analysts are expecting $1.92 a share.