The fastest way depends on what you're moving and what devices you have

You have three main routes: use a built-in transfer tool (Windows straightforward Transfer or Migration Assistant on Mac), move files manually through cloud storage or an external drive, or use a cable that connects both computers directly. Which one works best depends on whether you're keeping your old computer, how much data you have, and whether you want to copy everything or just specific files.

Built-in transfer tools are fastest if you're moving to a new computer of the same type — Windows to Windows, or Mac to Mac. Manual methods take longer but give you control over what moves and work between different computer types. Direct cable transfer is the quickest for large amounts of data, but requires the right hardware.

Key Takeaways

  • Windows straightforward Transfer (Windows 7 and earlier) and Windows Migration Assistant (Windows 10 and 11) can move your entire user account, files, and settings in one operation.
  • Mac users should use Migration Assistant, which comes built into macOS and can transfer from another Mac, a Time Machine backup, or a startup disk.
  • External hard drives and cloud storage (OneDrive, Google Drive, iCloud) work for any combination of computers and let you choose exactly what transfers.
  • A USB-C or Thunderbolt cable can connect two computers directly for faster transfer of large files, though setup varies by model.
  • After transfer, verify that important programs still work and check that all your files arrived before erasing your old computer.

Using Windows straightforward Transfer or Migration Assistant

Windows straightforward Transfer is built into Windows 7 and earlier versions. On Windows 10 and 11, Microsoft replaced it with Windows Migration Assistant, which works differently — it transfers your Microsoft account, apps from the Microsoft Store, and settings, but not all third-party programs or files. If you're moving from Windows 7 to Windows 10 or 11, straightforward Transfer won't run on the new computer, so you'll need to use a different method for files and programs.

To use Windows straightforward Transfer on an older system: connect both computers to the same network, run the tool on both machines, choose what to transfer (user accounts, files, program settings), and let it run. The process can take several hours depending on how much data you have. On Windows 10 and 11, open Settings, go to System, then "About", and look for "Transfer your data" or use the built-in backup and restore features instead.

Mac Migration Assistant comes pre-installed on every Mac. Open it (search for "Migration Assistant" in Spotlight), choose "To a Mac" on the new computer, then select the old Mac or a Time Machine backup as the source. You can transfer your entire user account, applications, files, and settings. The old Mac must be on the same network and running OS X 10.4 or later. Migration can take anywhere from 30 minutes to several hours depending on your data size and network speed.

Moving files through cloud storage

Cloud storage works between any two computers, regardless of operating system. Upload your files to OneDrive (Windows), Google Drive (any system), iCloud (Mac or iPad to Mac), or Dropbox (any system), then read them on your new computer. This method is slower than direct transfer for large amounts of data, but it's reliable and you can choose exactly which folders and files to move.

Set up the cloud storage app on your old computer first, upload the folders you need (Documents, Pictures, Desktop, and any custom folders), then install the same app on your new computer and read them. Most services let you sync automatically, so files appear on both computers without manual downloading. If you have gigabytes of data, this can take hours or even days depending on your internet speed.

One advantage: you can keep the cloud storage active on both computers afterward, so they stay in sync. One disadvantage: cloud storage doesn't transfer program settings or installed applications — only your files.

Using an external hard drive or USB drive

Plug an external drive into your old computer, copy your files and folders to it, then plug it into the new computer and copy them back. This works between any two computers and is faster than cloud storage for large files because it doesn't depend on internet speed. You'll need an external drive with enough space — if you have 500 GB of files, you need at least a 500 GB drive, though 1 TB is safer to avoid running out of space mid-transfer.

On Windows, right-click the folders you want (Documents, Pictures, Desktop, Downloads) and select "Copy", then open the external drive and paste them. On Mac, drag the folders to the external drive icon on the desktop. The time it takes depends on the drive speed and file size — copying 100 GB might take 30 minutes to an hour on a modern USB 3.0 drive, but much longer on an older USB 2.0 drive.

After copying to the external drive, safely eject it (right-click and select "Eject" on Windows, or drag the icon to Trash on Mac), then plug it into the new computer and copy the files to the location you want. Don't erase the external drive until you've verified all files arrived on the new computer.

Direct computer-to-computer transfer with a cable

Some computers can connect directly with a USB-C, Thunderbolt, or FireWire cable, which is faster than any other method for large files. On newer Macs, you can use a Thunderbolt or USB-C cable to connect two computers, then use Migration Assistant — it will detect the direct connection and transfer much faster than over a network. On Windows, direct cable transfer is less common and usually requires third-party software.

To use this method on Mac: shut down the new Mac, connect it to the old Mac with a Thunderbolt or USB-C cable, then start up the new Mac while holding the T key (or Command-T on newer models). The new Mac will appear as an external drive on the old Mac. Open Migration Assistant on the old Mac, select the new Mac as the destination, and choose what to transfer. This bypasses your network entirely and is significantly faster than wireless transfer.

Check your computer's manual or manufacturer's website to see if your model supports this. Not all Windows computers have this feature, and you may need a specific cable type.

What doesn't transfer automatically and what you need to do manually

Most transfer methods move your files and basic settings, but not everything. Installed programs usually don't transfer — you'll need to reinstall them on the new computer. Some programs (like Microsoft Office or Adobe Creative Suite) require you to deactivate the license on the old computer before activating it on the new one, or you'll lose access. Check the software's website or your license documentation for the deactivation process.

Email accounts may not transfer automatically. If you use Outlook, Gmail, Apple Mail, or another email client, you'll need to add your account to the new computer manually. Go to Settings or Preferences, add your email address and password, and let the client read your messages. Some clients can export your email folders before transfer — check the File menu for an export option.

Passwords and browser data sometimes transfer, sometimes don't, depending on the method you use. If they don't, you'll need to sign back into websites and re-save passwords. Consider using a password manager like Bitwarden or 1Password, which stores passwords in the cloud and works on any computer — you only need to log in once.

Verifying the transfer and what to do next

After files arrive on the new computer, open a few folders and check that the files are there and readable. Open a program or two to make sure they still work. Check that your user account and settings transferred correctly — on Windows, go to Settings and confirm your username and preferences; on Mac, open System Settings and check your user account.

If everything looks good, you can erase the old computer if you're selling or recycling it. On Windows, go to Settings > System > Recovery and choose "Reset this PC" with the option to remove files. On Mac, restart while holding Command-R to enter Recovery Mode, open Disk Utility, select your drive, and click "Erase". Both processes take 30 minutes to an hour and are permanent — make sure your transfer is complete first.

If you're keeping the old computer, you can leave it as is or erase it to free up space. Just make sure you have a backup of anything important before erasing.

Frequently Asked Questions

Can I transfer programs and games, or just files?

Most transfer methods move files only, not installed programs. You'll need to reinstall programs on the new computer using the original installer or read link. Some programs let you transfer the license by deactivating it on the old computer first — check the software's website. Games usually need to be reinstalled, though your save files may transfer if they're stored in your Documents or cloud storage.

What if my old computer is broken or won't turn on?

If you have a backup (Time Machine on Mac, or a Windows backup), you can restore from that on the new computer. If not, and the old computer won't start, you may not be able to recover the files. Some data recovery services can extract files from a broken drive, but they're expensive. This is why regular backups matter — set up automatic backups on your new computer so you don't lose data again.

How long does the transfer usually take?

It depends on how much data you have and which method you use. Built-in transfer tools (straightforward Transfer or Migration Assistant) can take 1 to 4 hours for a typical user account with files and settings. Cloud storage and external drives take longer for large amounts of data — 100 GB might take 2 to 4 hours on a fast connection. Direct cable transfer is fastest, usually 30 minutes to an hour for the same amount of data.

Do I need to keep my old computer on during the transfer?

Yes, if you're transferring over a network or using a direct cable connection. The old computer must be running and connected for the transfer tool to read your files. If you're using an external drive or cloud storage, you can turn off the old computer after copying files to the drive or uploading to the cloud — the new computer doesn't need the old one to be on to read the files.

What if the transfer fails halfway through?

Most transfer tools can resume from where they stopped. Restart the transfer tool and it should pick up where it left off. If it doesn't, try the transfer again from the beginning. If it keeps failing, try a different method — for example, if Migration Assistant keeps crashing, use an external drive instead. Check that both computers have enough free space (at least 10% of the drive should be empty) and that they're not running other large tasks during transfer.