Chief executive Larry Page hailed "another great quarter" for the tech giant, with revenue of USD 15.4 billion, up 19 per cent year on year.
"We got lots of product improvements done, especially on mobile. I'm also excited with progress on our emerging businesses," Page said in a statement yesterday.
But Google shares tumbled 5.7 per cent in after-hours trade to USD 556.64, suggesting that the growth was below investor forecasts.
Earnings per share amounted to USD 6.27 compared with analyst projections of USD 6.40. Analysts also expected a higher revenue figure of USD 15.5 billion.
The earnings report showed a 26 per cent rise in "paid clicks," a key figure for Google's advertising and revenues, growth slightly lower than the 29 per cent expected by analysts.
The price per click fell one per cent in the quarter and nine per cent over the past year. Analysts say this reflects a growing move to smartphones, where clicks produce lower revenues than on traditional PCs.