How to Back Up Your iPhone to Your Computer

The two ways to back up an iPhone to a computer

You can back up your iPhone to a computer in two ways: using iTunes or Finder (depending on your Mac or Windows version), or using iCloud. The most direct method is connecting your iPhone with a USB cable to your computer and creating a local backup file that lives on your hard drive. This backup contains your photos, messages, settings, app data, and nearly everything else on your phone—if your iPhone is lost or damaged, you can restore from this file and get back to where you were.

A local backup on your computer gives you full control: you can see the file, move it to an external drive, and keep multiple versions. It also works even if you don't have an internet connection. The trade-off is that you have to plug in your phone and run the backup yourself each time, and you need enough free space on your computer to store the backup file (usually 20 to 100 GB depending on how much is on your phone).

Key Takeaways

Connect your iPhone to your computer with a USB cable, then open iTunes (Windows or older Mac) or Finder (Mac with macOS Catalina or newer) to create a backup.
A backup file on your computer contains all your photos, messages, app data, and settings, and you can restore from it if your phone is lost or damaged.
You need enough free space on your computer to store the backup—check how much space your iPhone uses before you start.
After backing up, you can encrypt the backup file with a password to protect sensitive data like saved passwords and health information.
If you prefer not to plug in your phone, iCloud backs up automatically over Wi-Fi, but you pay for storage beyond 5 GB and the backup lives on Apple's servers instead of your computer.

Back up using a Mac with Finder

If you have a Mac running macOS Catalina (2019) or newer, you use Finder instead of iTunes. Connect your iPhone to your Mac with a USB cable. Your phone should appear in the Finder sidebar under Locations—click it. At the top of the window, you'll see tabs including General, File Sharing, and Backups. Click the Backups tab.

Under "Backups," you'll see a radio button for "Back up all of the data on your iPhone to this Mac." Select it. Below that, you can check the box for "Encrypt local backup" if you want to password-protect the backup file (this is optional but recommended, because it includes saved passwords and health data). Click "Back Up Now." The backup will take 5 to 30 minutes depending on how much data is on your phone. You'll see a progress bar. When it finishes, Finder will show the date and time of the backup.

After the first backup, Finder will automatically back up your iPhone every time you connect it to your Mac, as long as you leave it plugged in for a few minutes. You can also back up manually at any time by opening Finder, clicking your phone, going to the Backups tab, and clicking "Back Up Now" again.

Back up using Windows or older Mac with iTunes

If you have a Windows computer or a Mac older than Catalina, you use iTunes. read iTunes from Apple's website if you don't have it, then install it. Connect your iPhone to your computer with a USB cable. iTunes will open automatically (or you can open it yourself). Your iPhone should appear in iTunes—look for a phone icon in the top left area of the window.

Click your iPhone's icon. On the left sidebar, click "Summary." Under the "Backups" section, you'll see a radio button for "This computer." Select it. Below that, you can check "Encrypt iPhone backup" if you want to password-protect the backup. Click "Back Up Now." The backup will take 5 to 30 minutes. When it finishes, iTunes will show the date and time of the backup under "Latest Backups."

Like Finder, iTunes will automatically back up your iPhone each time you connect it, as long as you leave it plugged in. You can also back up manually by clicking your phone's icon, going to the Summary tab, and clicking "Back Up Now" again.

Check how much space you need before backing up

Before you start, make sure your computer has enough free space. On your iPhone, go to Settings, then General, then iPhone Storage (or "About" on older phones). At the top, you'll see how much total storage your iPhone uses—for example, "47.3 GB used." Your backup file will be roughly that size, though it may be slightly smaller if you have large videos or apps that don't back up.

On your computer, check how much free space you have. On a Mac, click the Apple menu, select "About This Mac," click "Storage," and look at the bar at the bottom—the gray section shows free space. On Windows, open File Explorer, right-click "This PC," select "Properties," and look at the bar under "Storage." If your free space is less than the size of your iPhone's storage, you won't be able to back up. Delete files or move them to an external drive to make room.

Encrypt your backup to protect sensitive data

When you back up, you have the option to encrypt the backup file with a password. This is optional, but it protects information that doesn't normally sync to iCloud—saved passwords, health data, home data, and payment information. Without encryption, anyone with access to your computer can restore from the backup and see this data.

To encrypt, check the "Encrypt iPhone backup" box (Finder or iTunes) before you click "Back Up Now." You'll be asked to create a password. Write it down or save it somewhere safe—if you forget it, you cannot restore from that backup. The password is not the same as your Apple ID password. After you set it, the backup will proceed normally.

Restore from a backup if you need to

If your iPhone is lost, damaged, or you get a new one, you can restore from your backup. Connect the new or repaired iPhone to your computer with a USB cable. In Finder (Mac) or iTunes (Windows/older Mac), click your phone's icon and go to the Summary or General tab. You'll see a "Restore" button. Click it and select the backup you want to restore from (Finder and iTunes will show the date and time of each backup). Click "Restore," and your phone will restart and restore all your data from the backup file.

Restoring takes 10 to 45 minutes depending on how much data is in the backup. Your phone will restart several times—don't unplug it during this process. When it finishes, your iPhone will look and feel exactly as it did when you made the backup, with all your apps, photos, messages, and settings in place.

Where your backup file is stored on your computer

The backup file itself is stored in a hidden folder on your computer. On a Mac, it's in ~/Library/process Support/MobileSync/Backup/ (you may need to show hidden files to see it). On Windows, it's usually in C:\Users\[Your Username]\AppData\Roaming\Apple Computer\MobileSync\Backup\. You don't need to open this folder to back up or restore—Finder and iTunes handle it automatically. But if you want to move your backup to an external drive for safekeeping, you can copy this entire folder.

Each backup is stored as a folder with a long string of letters and numbers as its name. Finder and iTunes keep track of which backup is which by the date and time shown in the app. If you have multiple backups (for example, one from last week and one from today), they will all be in this folder, and you can choose which one to restore from.

Frequently Asked Questions

Can I back up my iPhone wirelessly without plugging it in?

Not to your computer—wireless backup is only available through iCloud, which backs up to Apple's servers instead of your computer. If you want a backup on your computer, you must use a USB cable. However, after you set up a local backup once, Finder or iTunes will back up automatically every time you connect your phone, so you don't have to manually start the process each time.

What's the difference between backing up to my computer and backing up to iCloud?

A computer backup creates a file on your hard drive that you control and can move or copy. An iCloud backup stores your data on Apple's servers and syncs automatically over Wi-Fi. iCloud is convenient but requires an internet connection and costs money for storage beyond 5 GB. A computer backup is free and works offline, but you have to plug in your phone and manage the file yourself.

How often should I back up my iPhone?

If you have Finder or iTunes set to back up automatically when you plug in your phone, you'll have a backup from whenever you last connected. For important data, many people back up once a week or after making major changes (like installing new apps or taking important photos). The more often you back up, the less data you'll lose if something goes wrong.

Will backing up use a lot of data on my Wi-Fi?

Backing up over a USB cable uses no Wi-Fi data at all—the data transfers directly through the cable. If you use iCloud instead, the backup does use Wi-Fi, and the first backup can take a long time depending on your internet speed and how much data is on your phone.

Can I back up my iPhone to multiple computers?

Yes, but each computer will have its own separate backup file. If you back up to Computer A on Monday and Computer B on Wednesday, you'll have two different backups from two different dates. You can restore from either one, but they won't be combined. Most people back up to one main computer to avoid confusion.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.