Google has unveiled a new form of search that offers real-time results to likely queries.
Marissa Mayer, vice-president of search products and user experience, said Google Instant "is search-before-you-type".
In a development that could have implications for optimisation and online marketing services, it takes the start of a query, predicts the most likely complete phrase and streams results in real time.
It also offers alternative searches that people can scroll through and get pages displayed instantly.
Ms Mayer said the new system should cut the length of an individual search by two to five seconds.
"With Google Instant, we estimate that we'll save our users 11 hours with each passing second," she added.
The current rollout will see Instant become the "core search experience" on Google.com running on the Chrome, Internet Explorer 8, Safari and Mozilla Firefox browsers.
It will also be available to people in the UK, Spain, Russia, France and Germany.
Ms Mayer said the Google Instant will be rolled out to all other territories over the next few months.
According to comScore, Google sites handled 10.2 billion searches in the US alone during July.
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