Most companies offer free online backup account for you to try out their online backup service. Companies such as MyPC Backup, JustCloud, or Carbonite allows you to sign up for a free account without a credit card. Some of these accounts are on limited time trial meaning you have 15 or 30 days to try out their online backup service to see if it fits your needs.
When you're considering an online backup provider, we recommend you check out our online backup reviews to see all the different online backup features and sign up free backup accounts that don't require credit card. Take your time to evaluate 2 to 3 leading online backup providers before you make a long-term commitment.