More than three quarters of people in the UK now do at least some online grocery shopping, according to supermarket chain Waitrose.
It said the growth in online supermarket shopping due to coronavirus was “reminiscent of scaling Everest”.
Separate research suggests almost half of consumers feel their shopping habits will change permanently due to the crisis.
Retail Economics said many retailers were “scrambling” to adapt.
The coronavirus lockdown which began in March saw a massive jump in demand for online grocery deliveries as people sought to minimise trips to supermarkets.
Waitrose polled 2,000 people across the UK and found that 77% now do at least some of their grocery shopping online, compared with 61% the year before.
The biggest shift towards online supermarket shopping was in the over-55 age group, where regular online shopping nearly trebled.
However, there was also a big rise among 35 to