How to Test Your Internet Speed (Accurate Results)

Quick Start: 30-Second Speed Test

If you just want to know your speed right now: click here to run our speed test. The test runs in your browser, takes about 30 seconds, and reports four numbers — download, upload, ping, and jitter. No app to install, no email required.

Before You Test: 5 Things That Affect Results

For an accurate measurement, the steps you take before hitting Start matter more than which speed test you use:

1. Use Ethernet if you can. Wireless tests routinely show 40–70% of your line speed on plans above 300 Mbps because of WiFi limitations, not ISP problems. Plug into the router with an Ethernet cable for the truest measurement.
2. Close other apps and tabs. Cloud backups (iCloud, Dropbox, OneDrive), streaming apps, and even background browser tabs consume bandwidth that gets subtracted from your test result.
3. Pause other devices. If the kids are streaming Netflix on the TV while you test, your result reflects shared bandwidth, not your line capacity.
4. Test from the same location each time. Comparing results across tests only makes sense if conditions are consistent — same device, same room, same time of day.
5. Test multiple times. A single test catches a snapshot. Run 3 tests and use the median — it filters out one-off network blips.

How to Run the Test

Step 1: Open the speed test

Go to speedtesthq.com in any modern browser — Chrome, Safari, Firefox, or Edge. The test loads instantly with no install or sign-up.

Step 2: Click Start

The test will measure download speed first (about 10 seconds), then upload speed (10 seconds), then ping and jitter (5 seconds). Don't switch tabs or click anywhere — let it run uninterrupted.

Step 3: Read your results

You'll see four numbers when the test finishes. Here's what each one means and what's considered good:

Wired vs WiFi Speed Test

This is the single biggest source of confusion. A WiFi speed test measures your wireless connection, which has its own ceiling — it does not directly measure what your ISP is delivering. To isolate the ISP from your home network, run the test twice:

• Wired test: Plug a laptop directly into the router's LAN port. This shows what your ISP is actually delivering.
• WiFi test from the same spot: Disconnect the cable, reconnect over WiFi, run again. The gap between the two is your home WiFi overhead.

If wired matches your plan but WiFi is much slower, the problem is your router or WiFi signal — not your ISP. See our WiFi speed guide and router placement guide to fix it.

Phone vs Laptop Speed Test

Phones often appear slower than laptops on the same WiFi because of older WiFi chipsets, single-antenna designs, and CPU limits in the JavaScript engine. A 2020-era phone may cap out around 400 Mbps on WiFi, even on a gigabit plan with a great router. To benchmark your line, test from your fastest device — usually a recent laptop on Ethernet.

Common Speed Test Mistakes

• Testing during peak hours only. 7–11 PM is the worst-case scenario; running at 3 AM gives a much rosier number. Test at multiple times to know your real range.
• Testing on a VPN. VPNs add 5–25% overhead. Disconnect the VPN for an accurate baseline. See our VPN speed impact guide.
• Trusting a single test. Results vary by 5–15% test-to-test for normal reasons. Run 3 tests, take the median.
• Using an outdated speed test app. Older apps cap throughput artificially below 1 Gbps. Modern HTML5 tests (ours included) handle multi-gigabit connections.

What to Do With Your Results

If you're hitting your plan speed

You're getting what you pay for. If specific things still feel slow (video calls, streaming, gaming), the issue is usually latency, jitter, or per-device throughput — not raw speed. Check our jitter fix guide and packet loss guide.

If you're getting much less than your plan

First confirm with a wired test (rules out WiFi issues). If wired is also slow, restart your modem and router, then re-test. If still slow, contact your ISP — most are obligated to deliver 80%+ of advertised speed on a wired connection. See our slow internet fix guide.

If your speeds vary wildly

Inconsistent speeds usually mean peak-hour congestion (cable ISPs especially) or interference (WiFi). See our why speeds vary by time of day guide.

Frequently Asked Questions

How do I test my internet speed?

Open speedtesthq.com in a browser, close other apps and tabs that use bandwidth, and click Start. Test on a wired Ethernet connection if possible. The test takes about 30 seconds and reports download speed, upload speed, ping (latency), and jitter.

Why is my speed test slower than my plan?

The most common reasons are testing over WiFi instead of Ethernet, browser overhead (close other tabs), background apps using bandwidth (cloud sync, streaming on another device), an aging router, or peak-hour congestion. On any plan above 500 Mbps, WiFi and the router itself often become the bottleneck before the ISP does.

What is a good internet speed?

For a typical household: 100 Mbps download covers streaming, video calls, and gaming for 2–3 people. 300 Mbps handles 4K streaming on multiple TVs simultaneously. Above 500 Mbps the diminishing returns start unless you regularly transfer large files. Upload should be at least 10 Mbps for video calls; symmetric fiber is ideal for remote work.

How often should I test my internet speed?

Test once when you first sign up to verify you're getting what you paid for. After that, test only when something feels wrong — slow streaming, choppy calls, gaming lag. Routine daily testing tells you very little because numbers naturally fluctuate throughout the day with network load.

Are speed test results reliable?

Modern HTML5 speed tests (including ours) are reliable to within 5–10% of actual line speed when run correctly: wired connection, browser closed except for the test, no background downloads. Single-stream results understate gigabit connections by 20–40% — multi-stream tests are required for accurate measurement above 500 Mbps.