WiFi vs Ethernet: Real Speed Difference & When It Matters
Should you bother running an Ethernet cable? We measured real-world speed, ping, and stability differences between WiFi and wired connections β and the gap is larger than most people expect.
Quick Comparison
πΆ WiFi
- Convenient, no cables
- 5β30ms added latency
- Speed varies by distance
- Susceptible to interference
- Higher jitter (inconsistent)
π Ethernet
- Requires a cable
- 1β3ms added latency
- Full router speed always
- No wireless interference
- Extremely consistent
Real-World Speed Numbers
These are typical results from the same 500 Mbps plan β measured on the same device, same router:
| Connection | Download | Upload | Ping | Jitter |
|---|---|---|---|---|
| Ethernet (direct) | 487 Mbps | 492 Mbps | 2ms | 0.3ms |
| WiFi 5GHz (same room) | 340 Mbps | 310 Mbps | 8ms | 3ms |
| WiFi 5GHz (next room) | 180 Mbps | 160 Mbps | 15ms | 8ms |
| WiFi 2.4GHz (same room) | 95 Mbps | 80 Mbps | 22ms | 15ms |
| WiFi (through 2 walls) | 55 Mbps | 40 Mbps | 35ms | 30ms |
π Compare your WiFi vs wired speed right now Run the test twice to see the difference
Speed Testπ‘ Key Takeaway
Even in the same room, WiFi delivers only ~70% of the wired speed. Through walls, you may get only 10β20% of your plan's speed. Ethernet always delivers nearly 100%.
When Does It Actually Matter?
Always Use Ethernet For:
- Competitive gaming β Every millisecond counts. Ethernet gives you 10β30ms less ping and near-zero jitter.
- Video calls / WFH β Prevents freezing and dropped connections during important meetings.
- 4K streaming on a smart TV β Especially if the TV is in a different room from the router.
- Large file downloads / uploads β Cloud backup, uploading videos, downloading games significantly faster.
- Desktop PCs β No mobility needed. There's no reason not to use Ethernet.
WiFi Is Fine For:
- Smartphones and tablets β Moving around makes cables impractical.
- Laptops (casual use) β Browsing, email, and HD video don't require Ethernet-level performance.
- Smart home devices β Smart bulbs, thermostats, and cameras need very little bandwidth.
π Curious about your actual connection speed? Test it free right now
Test NowHow to Switch to Ethernet
If your device doesn't have an Ethernet port (common on modern laptops and some smart TVs), you have two options:
- USB-C to Ethernet adapter β ~$15β30, works with most modern laptops and some TVs. Plug in, no setup required.
- Powerline adapter β Sends network signal through your home's electrical wiring. Good option when running a cable isn't practical. Slower than direct Ethernet but far better than WiFi through walls.
π Compare Your WiFi vs Wired Speed
Run the speed test on your WiFi device, then again after connecting via Ethernet. See the real difference.
Start Speed TestFAQ
Is Ethernet always faster than WiFi?
In practice, yes β Ethernet is faster, lower latency, more stable, and less subject to interference than WiFi. The only scenario where WiFi might technically match Ethernet is if you're on WiFi 6E in the same room as the router with no interference, but Ethernet will still have lower ping and jitter.
Does WiFi 6 close the gap with Ethernet?
WiFi 6 and 6E significantly improve speeds and reduce interference in dense environments. For download/upload speeds, WiFi 6 can come close to Ethernet in ideal conditions. However, Ethernet still wins on latency and consistency β which matters most for gaming and video calls.
I can't run a cable. What's the next best option?
In order of effectiveness: (1) Move closer to the router and use 5GHz WiFi. (2) Use a powerline Ethernet adapter (sends network through electrical wiring). (3) Use a MoCA adapter (sends network through coaxial cable). (4) Use a WiFi mesh system to extend coverage.