The Times and The Sunday Times will start charging for their websites from June. Readers will be offered a day's use for £1, or £2 for a week's subscription. Readers who have a seven-day subscription to the print editions will not be charged extra for access to the websites.
The two titles will launch new websites in early May, separating their digital presence for the first time and replacing the existing site. There will be a free trial period and payment will allow access to both websites.
Rebekah Brooks, chief executive of News International, said: "At a defining moment for journalism, this is a crucial step towards making the business of news an economically exciting proposition. We are proud of our journalism and unashamed to say that we believe it has value."