howfastisnetFIND WHERE THE SPEED CHANGES
Wi-Fi Slow but Ethernet Fast? Find the Bottleneck
A good wired result suggests your internet connection can deliver more than you are getting over Wi-Fi at that moment. It points toward a wireless or device limitation, but does not prove which part is responsible.
Open the speed testThe test uses internet data.
Compare three checks on the same laptop
Use the same device, browser and Standard test depth, with other downloads and backups paused. Keep your VPN setting unchanged and run the checks close together. Stay out of video calls while testing.
- Your usual Wi-Fi spot: select Wi-Fi on the test page, press Start, and note download, upload and response time.
- Wi-Fi near the router: move closer, staying on the same Wi-Fi network. Repeat and record the result.
- Ethernet: connect the same laptop by cable to the router and turn Wi-Fi off so the test uses the cable. Select Ethernet, run again, and record the result. Re-enable Wi-Fi afterwards if needed.
Standard can use up to about 100 MB per test; three checks can use up to about 300 MB. Check your data allowance first. If your device has no Ethernet port or suitable adapter, compare the two Wi-Fi locations; a wired test on another device is a useful clue, but not a like-for-like comparison.
Read more than the download number
Download and upload · Mbps
How quickly data arrives and leaves. Compare both directions. Higher values mean more measured transfer capacity.
Response time · ms
The delay to the test server. Lower is generally preferable. Fast downloads can coexist with delayed calls or games.
Stability under load
Open Stability & loaded latency for jitter and delay during transfers. A dash means missing data, not a passing result.
Your comparison: what to try next
Wi-Fi improves near the router
Coverage or interference may contribute. Try a more open router location and retest in the problem room. Avoid buying a faster internet plan before checking whether a placement change helps.
Wi-Fi stays slow nearby, but Ethernet is fast
Compare another Wi-Fi device near the router. If only one device is slow, check its Wi-Fi adapter, supported wireless standard and manufacturer updates. If several are slow, inspect the router’s wireless settings and connected-device load using its official instructions.
Both Wi-Fi and Ethernet are now slow
The earlier wired result may no longer describe current conditions. Repeat at a quieter time, check background transfers and your provider’s outage page. Share repeated wired measurements and test times with support if it persists.
Speeds are good, but games or calls still lag
Compare jitter and loaded latency, pause competing uploads and repeat. Check the affected app’s own network statistics: its server and route differ from the browser test.
What about 2.4 GHz, 5 GHz and mesh?
If your router offers separate Wi-Fi bands, compare them near the router using its official instructions. 5 GHz may offer higher speeds nearby; distance, obstacles and the device still matter. Do not assume the browser can identify your Wi-Fi band or signal strength.
With mesh or an extender, note which access point serves the device if the router app shows it. Compare near the main router before deciding you need another unit. A slow link between mesh units can affect a device even when it is close to one of them.
Keep the comparison honest
A phone on Wi-Fi and a desktop on Ethernet differ in more than connection type. Avoid running tests simultaneously. Do not change the device, VPN, test depth and connection all at once, or treat one unusually fast result as typical.
For the two Wi-Fi locations, the test’s Did that change help? feature can compare saved results within 30 minutes: select Move closer to router, save the starting result, make the change, confirm the setup, then run the second check. For Wi-Fi versus Ethernet, record results separately: the guided comparison expects the same connection type.
Common questions
Should Wi-Fi match my Ethernet speed?
Not necessarily. The wireless link, device and environment can limit Wi-Fi. Compare what your device actually needs rather than assuming both connections must give identical numbers.
Will a faster internet plan fix slow Wi-Fi?
A faster plan will not remove a wireless limitation. If Ethernet repeatedly performs well while Wi-Fi does not, investigate the Wi-Fi path first.
Should I reset the router?
A normal restart may help a temporary problem; save a measurement first and follow the manufacturer’s instructions. A factory reset erases settings and is not part of this comparison.
Internet slows down mainly in the evening? Compare daytime and evening checks.
Measure the difference before changing your equipment.
Open the speed testRelated guides
Further reading
Record your own comparison
Record the three conditions below. These are your readings, not published research results. Repeat the comparison if results vary.