You can download all of your mail and calendars or choose a subset of labels and calendars. You can also download a single archive file for multiple products with a copy of your Gmail, Calendar, Google+, YouTube, Drive, and other Google data. If you want to create a local copy of all your data presents in Gmail, Contacts, Calender’s, googleNotes everything in your account then here is a simple step to do the same.
1. Login to Google account.
2. Open My account setting.You will see create archive link, click on that.
3. Now you will see Google products that you are using and how much data you used all statistic are showing there.
4. Select which data you want to download and click on the next button.
5. Once you have selected the product data, you need to select the file type which you want.