Best unlimited cloud backup services in 2024

Backblaze is our top pick for unlimited cloud backups, and for good reason. The service is undoubtedly one of the simplest to use; there's not much more to do than set it up and leave it running. The company's whole philosophy is not to over-complicate things for users, which is why they offer a single plan on a one, two or three-year deal. Customers don't really even have to (although you can) decide what gets backed up – Backblaze scans for permanently attached hard drives and just backs them up straight away.

If you're unconvinced by their unlimited storage claims, remember that last year Backblaze backed up around one exabyte of data (one million terabytes) for its customers. Despite gunning for simplicity, one setting you'll be glad they included is the ability to prohibit data being backed up on specific WiFi networks, which is ideal if you don't want your documents to be backed up over a public or 4G network. 

How quickly you can back files is largely dependent on your internet connection, but having said that, you won't find much quicker when it comes to sorting through and saving your files – you can even adjust how much bandwidth you'd like to use for the process. Backblaze is also by far the cheapest of the five we recommend here yet comes with all the necessary security features to keep your data safe, such as personal encryption keys and a geolocation tool that can help determine the last WiFi network a lost or stolen computer was connected to.

Remember, you can test out Backblaze even if you're undecided thanks to their 15-day free trial, which doesn't require you to hand over any credit card information. 

Livedrive is a great backup service with over one million customers and unlimited storage options. With Livedrive's basic Backup and premium Pro Suite plans, there are no restrictions on the volume of content you can upload to their cloud servers. Although it does not come with unlimited storage, you can sync and edit your files across multiple devices when you upgrade to the 'Briefcase' service, which is sandwiched in between the two previous options when it comes to price. Files can be ordered and then uploaded based on user preference, meaning your most important documents will be the first to be backed up, and there's a 30-day restoration period if you accidentally delete something. 

With this service, it's really easy to add another computer into your backup equation – you can keep adding devices for just $1.50 each if you please. The process is pretty straightforward thanks to the service's user-friendly interface, which is excellent regardless of what device you're using – even on phones, for which Livedrive has a particularly snazzy setup.

In terms of security, Livedrive might not offer end-to-end encryption, but it does use AES-256 bit encryption on its servers, which is more secure than some of the other cloud backups which only use AES-128. Overall, it's another solid choice. 

Carbonite is another service we know can do the backup job well. It has a three-tiered system of backup plans, all of which provide purchasers with unlimited storage space in the cloud and can be bought on one, two, or three-year contracts. Carbonite Safe Plus affords purchasers the option to back up external hard drives. Carbonite Safe Prime on the other hand, amongst other things, will deliver you a hard drive with all your data on if you experience a huge loss. As backup services go, Carbonite is no trouble to use – saving individual files is a simple and easy process that involves just a single click.

Once you start using this service, you'll realize Carbonite is all about attention to detail. Files that have been backed up are clearly marked as such in your documents folders, and it's really simple to identify and restore particular versions of different documents. It's important to note that Carbonite's basic plan does not automatically back up large files like videos, but this just means it just doesn't by default and users have to adjust it manually. As with all cloud backups, bandwidth causes speeds to vary, but overall, Carbonite is no slouch and will certainly leave you satisfied.

The service first launched over fifteen years ago and has helped maintained Carbonite's stellar reputation the whole time, so if you're looking for a track record you can trust this may be the service for you. 

OpenDrive is a cloud storage service that offers online syncing options, but it's also great for backing up all your files because the volume you can upload is totally unlimited, regardless of whether it's for personal or business purposes. The service is speedy and the 'Permanent' backup option ensures your work is backed-up every 30 seconds.

OpenDrive is one of the most well-regarded backup services on the market, and its 4.6 Trustpilot rating illustrates its user experience is consistently top-drawer. It's highly customizable and you can adjust the settings of things like bandwidth and the number of users who can access the storage space. Security-wise, OpenDrive has you covered – you can even set private encryption keys on specific folders using the AES-256 bit standard.

Although some settings can feel a little over-complicated at times, the service redeems itself with an excellent user interface and the fact it has native apps for iOS and Android. What's more, if you accidentally delete files, you have 90 days to restore them – plenty of time to realize. 

CrashPlan might not be as well known as the other names on the list, but it's one of the best data recovery programs out there. CrashPlan for Small Businesses (sometimes called CrashPlan Pro) is ideal for application at home and in the workplace.

This service provider simplifies the whole game by providing one $10/month plan with no restrictions on file volume, and what's more, you can add as many devices as you want. For this price, you can back up your data to the cloud as well as physical storage locations like hard drives if you feel the need. 

CrashPlan may not have the speedy upload speed to match the competition right out of the gate, but just like Carbonite, it's great for file versioning, affording you the ability to access older iterations of documents. In recent years, they've expanded their customer support team based in the US and you can even try the service for a month completely free of charge if you're unsure.