How to Share Files Between Computers at Home (Australia)

Still emailing files to yourself or carrying a USB drive between rooms? Here are the four ways to share files across all your home devices. And how to choose the right one for your situation.

If you've ever emailed a file to yourself just to open it on another computer, or carried a USB drive between rooms, there's a better way. Most Australian households now have three to five devices. A desktop, a laptop, a phone, maybe a tablet. And moving files between them shouldn't require workarounds. Here's what actually works, what the tradeoffs are, and how to pick the right approach for your home.

In short: Cloud folders (Google Drive, OneDrive) work well for documents and photos if your files are small and you're happy paying ongoing subscription costs. For a household with large files or multiple devices, a NAS. A small always-on storage box on your home network. Eliminates monthly fees and is accessible from every device including your phone.

Why File Sharing at Home Is More Complicated Than It Should Be

Australian households are increasingly multi-device. Research shows more than 90% of Australian households with internet access have multiple connected devices, yet most people still share files the same way they did in 2010. USB drives, email attachments, or hoping their cloud sync catches up in time.

There's also a distinctly Australian wrinkle: NBN upload speeds. A typical NBN 100 plan offers around 20Mbps upload. That's fine for syncing a document, but upload a 4GB video and you're waiting 30 minutes before it's available on another device via cloud. iCloud and Google One are also priced in USD and converted to AUD at rates that fluctuate. Australians pay a built-in exchange rate premium on storage that US users don't.

Your Four Options. Plain English

Option 1: Cloud Shared Folder (Google Drive, OneDrive, iCloud)

Put a file in your Google Drive or OneDrive folder, and it appears on every other device signed into the same account. This works well for documents and photos, and if you already subscribe to Microsoft 365 or Google One, you probably have more cloud storage than you're using.

Works well when: Files are modest in size (documents, spreadsheets, PDFs), you're comfortable paying ongoing storage costs, and you need access from outside home regularly.

The catch: Storage costs in AUD after free tiers. Uploading large files (videos, raw photos) is slow on NBN upload speeds. You're dependent on internet connectivity. No internet means no files.

Option 2: USB Drive or External Hard Drive

An external drive plugged into one computer and carried to another. Simple, cheap (~AU$80-150 for 2TB), and works without internet.

Works well when: You only occasionally need to transfer files and they're large (video footage, game backups).

The catch: It's manual. There's no automatic sync. You need the physical drive in hand. A single drive is not a backup: if it fails or gets lost, your files are gone.

Option 3: Built-in Windows or Mac File Sharing

Both Windows and macOS have built-in file sharing that lets one computer share a folder over your home network. No monthly cost, no cloud required.

Works well when: All your computers run the same operating system (all Windows or all Mac), the sharing computer is usually on, and you only need access from inside your home.

The catch: Cross-platform sharing (Windows sharing to a Mac, or vice versa) is fiddly to set up and occasionally breaks after system updates. The shared computer must be running. Shut it down and nothing is accessible. Not accessible from outside your home network without extra configuration.

Option 4: A NAS (Network Attached Storage)

A NAS is a small, always-on box that connects to your home router. It holds one or more hard drives and appears as a shared network drive on every computer and phone in your home. Windows, Mac, iPhone, Android, all at once, without any of them needing to be on or logged in.

Unlike cloud storage, your files never leave your home. Unlike built-in file sharing, it doesn't depend on a specific computer being awake. Unlike a USB drive, it's accessible from anywhere via an app. You can pull up a file on your phone while you're at work.

Works well when: You have multiple devices across different operating systems, you want files accessible from anywhere, you store large files (videos, photos, backups), or you're tired of paying monthly cloud fees.

The catch: It's a one-time hardware purchase (~AU$350-700 for the NAS unit, plus ~AU$80-150 per hard drive). There's a modest setup process. What a NAS actually is. And whether it suits your situation. Is explained in detail here.

Which Option Is Right for Your Home?

If you only share documents and you're already paying for Google One or Microsoft 365, you probably already have what you need. Use it. If you're trying to share large files (video, raw photos, game backups) across multiple devices without upload delays, or if you're paying monthly for cloud storage and want to stop, a NAS is worth looking at seriously. The upfront cost typically pays for itself within 2-3 years compared to cloud subscriptions.

A middle ground many households settle on: free-tier cloud for easy sharing with others, and a NAS as primary home storage. That approach gives you the convenience of both without the ongoing cost of large cloud tiers.

For more on comparing cloud vs home storage costs, see NAS vs Cloud Storage Australia. If iCloud costs are the specific frustration, cheaper iCloud alternatives for Australians covers the options in detail.

Use our free NAS Sizing Wizard to get a personalised NAS recommendation.

Can I share files between a Windows PC and a Mac at home?

Yes. Cloud services (Google Drive, OneDrive) work seamlessly across both. A NAS also works with both Windows and Mac simultaneously. It appears as a mapped network drive on Windows and a mounted volume in Finder on Mac. Built-in Windows/Mac file sharing can work cross-platform but requires more configuration and is less reliable.

Do I need the internet to share files at home?

No. If you use built-in file sharing or a NAS, files are shared over your home Wi-Fi or network cable. No internet connection required for access within your home. Cloud services (Google Drive, iCloud, OneDrive) do require an internet connection for syncing and access.

Is it safe to share files over my home network?

Yes, sharing files over your home Wi-Fi is no less secure than the devices themselves. Your home router's Wi-Fi password protects the network. A NAS adds user account controls. You can restrict which folders each person can access. The main risk is making sure your NAS isn't inadvertently exposed to the public internet. Most consumer NAS units have this turned off by default.

How much does a home NAS cost in Australia?

Entry-level 2-bay NAS units from Synology or QNAP start around AU$350-450. You'll also need hard drives. 2TB NAS drives cost roughly AU$80-110 each. A basic 2-bay setup with 2×2TB drives runs around AU$550-650 all up. That compares to roughly AU$107/year for iCloud 2TB. So it typically pays for itself within 5-6 years, with no ongoing fee after that.

Can I access files on a NAS from outside my home?

Yes. Most consumer NAS units include a mobile app (Synology's DS file, QNAP's Qfile) that lets you access your files from anywhere with an internet connection. Similar to how you'd use a cloud storage app. Remote access depends on your home NBN upload speed. For browsing documents and photos it's fine on most connections; streaming large video files remotely works better on NBN 250 or faster plans.

Not sure if a NAS is right for your home? The Best NAS Australia guide covers every major option with Australian pricing and honest tradeoffs.

See Best NAS Australia →