- Login to your vault via the web interface -> https://bitwarden.com

- To export your password from Chrome, go to top right menu icon and down the bottom on the menu click Settings.

- Click “Autofill and passwords” on the left and then click “Google Password Manager”

- Click “Settings” on the left and then look for “Export passwords” and click “Download file” and save your file to your machine.

- Go back to Bitwarden web interface, click “Tools” on the left and then “Import data”

- Choose the file format your are going to use. Chrome (csv)

- Click “Choose file” and choose the file you export on step 4, and click Import data to load all your password into Bitwarden vault.

Note:
After all your data been imported, remember to delete the file export on step 4.