Speed seems low?

Check the number you are comparing

1. Find the expected wired download and upload rates in your provider's plan documentation. Do not compare upload with the download headline.
2. Check the units in the file-transfer app. Mbps means megabits per second. MB/s means megabytes per second. Eight bits make one byte.
3. Convert the units before judging the gap. For example, 80 Mbps equals 10 MB/s before overhead and other limits.
4. Check the scan profile. Lower data uses smaller transfers and skips upload. It cannot establish sending capacity.

Our browser check estimates transfer speed to Cloudflare. The result depends on your device, Wi-Fi, destination, and how long the test runs. This check cannot tell you your line's maximum speed.

Read the wired adapter's link speed

Use this when: a wired scan remains unexpectedly low, or a cable/adapter was part of your comparison. Link speed is the negotiated local connection rate, not the internet service rate.

Windows 11: open PowerShell

1. Open Start, type PowerShell, and open a normal Windows PowerShell window. This read-only query does not require changing adapter settings.
2. Run the command below. Find the physical Ethernet adapter with Status: Up.
3. Read its LinkSpeed. Ignore disconnected and virtual/VPN adapters when inspecting the wired cable.

Get-NetAdapter | Select-Object Name, Status, LinkSpeed

Name       Status   LinkSpeed
Ethernet   Up       100 Mbps
Wi-Fi      Disconnected   0 bps

A 100 Mbps local link limits transfers across that link. It does not prove why it negotiated that rate. A gigabit label does not guarantee gigabit internet throughput.

Mac: inspect the Ethernet service

Inspect the available Hardware information and adapter specification. Leave configuration automatic unless your administrator provides settings. Compare a suitable cable or port, then repeat. Available fields vary by adapter.

Repeat with one condition changed

1. Save the usual scan with its date, profile, device, and connection method noted separately.
2. Look for a known active transfer using Resource Monitor or Activity Monitor. Pause it through its app, then repeat the same profile.
3. If you use Wi-Fi, make the wired comparison before interpreting the plan-speed gap.
4. If a wired estimate remains low, compare another device at a similar time. Then compare the original device at another time.
5. Use your provider's documented test method when evaluating its expected service rate.

If only one device is consistently slower, investigate its adapter or software conditions. If several wired devices show the same repeated pattern, give that evidence to support. The scan cannot establish a contractual shortfall by itself.

Estimate a file-transfer time

In decimal units, a 1 GB file is about 8,000 megabits. Divide by the estimated Mbps to get a rough time before additional overhead.

Use upload for sending a backup and download for receiving a file. Treat this as a rough planning number. Transfers speed up and slow down, services set limits, and other traffic uses some of the same capacity.

Prepare evidence for your provider

• Expected wired rates and the provider's own test results, if available.
• Dates, times, device, connection method, and scan profile.
• Whether other transfers were paused and whether the pattern repeats on another wired device.
• Capacity estimates plus idle response and added delay. Report relay loss only when observed.

"Two wired devices show lower estimates in the evening with transfers paused. Morning readings are higher. Here are the dates and comparisons. Can you investigate this pattern?"

If downloads are quick but calls or games lag, follow the responsiveness guide instead of assuming a faster plan will help.