VeraCrypt and Bitlocker have already been mentioned, so in case they don't cover your use case, take a look at Cryptomator. You can have an encrypted folder, p

VeraCrypt and Bitlocker have already been mentioned, so in case they don't cover your use case, take a look at Cryptomator. You can have an encrypted folder, put it on Google Drive and then decrypt it from any of your devices. Even iOS will support it natively once you do the setup with the Cryptomator app.