Employees' dogs - which the company insists on calling "Dooglers" - will also be welcomed back. The move comes after Ruth Porat, Google's finance chief, said in November that the company had no plans to open its offices sooner than June because "working from home is working".
Google is advising employees to get vaccinated but said this will not be mandatory.
It comes amid growing debate in big business about whether the traditional office is still needed after millions of people worked from their spare rooms without major disruption.
Earlier this week, PwC told its staff they would be free to split their time between the workplace and home in future and major banks such as Lloyds and HSBC have slashed office space.
By contrast, David Solomon, the Goldman Sachs boss, dismissed home-working as an "aberration" and said he wanted his staff back in.
Amazon, another of the world's largest employers, told its white-collar workers this week that they would be back at their desks after the summer, having said they could work from home until July.
- The Daily Telegraph