How to Check Your Internet Speed

Complete guide to speed testing, understanding results and practical tips for better speed.

Introduction

Does your internet feel slow? Is Netflix loading in low quality? Are video calls choppy? Before you call your internet provider, it's wise to measure your speed with a reliable speed test. This guide explains what you're measuring, how to get accurate results, and what you can do to improve your speed. You can use our speed test to measure your connection.

What Does a Speed Test Measure?

A speed test measures four main parameters:

  • Download speed (Mbps) — How fast you can fetch data from the internet. This is the most important number for streaming, downloading and general browsing.
  • Upload speed (Mbps) — How fast you send data. Important for video calls, cloud backup and file uploads.
  • Ping / Latency (ms) — The time it takes for a small data packet to reach the server and return. Low ping is important for gaming and real-time communication.
  • Jitter (ms) — The variation in ping over time. High jitter causes unstable quality on VoIP and video calls.

How to Get Accurate Test Results

For representative numbers, follow these steps:

  1. Connect your PC or Mac directly to the router with a cable — don't use Wi-Fi for the most accurate test
  2. Close other programs and tabs that use the internet (streaming, downloads, updates)
  3. Disconnect other devices from the network, or ensure they're not active
  4. Run the test several times at different times — speed varies with network load
  5. Restart the router and wait 2–3 minutes before testing if you've had issues

Understanding Your Results

Speed is usually given in Mbps (megabits per second). Note that this is not the same as MB/s (megabytes per second) — 100 Mbps equals about 12.5 MB/s. Your plan is likely advertised in Mbps. Compare your test result with what you pay for — you typically get 70–90% of the advertised speed under normal conditions.

Ping under 50 ms is excellent for gaming and video calls. 50–100 ms is good. Over 150 ms can cause noticeable delay. Jitter should ideally be under 30 ms for stable voice and video.

What Is Good Internet Speed?

Needs vary by use. Here's a rough overview:

Use Recommended download
Email, browsing10–25 Mbps
HD streaming (Netflix, etc.)25–50 Mbps
4K streaming50–100 Mbps
Video calls (Zoom, Teams)25–50 Mbps down, 5–10 Mbps up
Online gaming25+ Mbps, low ping (<50 ms)
Home office with multiple users100+ Mbps

Factors That Affect Speed

  • Router and Wi-Fi — Older routers and poor Wi-Fi coverage limit speed. Router placement and walls affect the signal.
  • ISP and plan — You can't get more than your plan allows. Some providers "oversell" capacity during peak hours.
  • Time of day — Evening and weekend hours often have higher load and lower speed.
  • Distance to exchange — With copper/DSL, distance to the telephone exchange affects speed. Fiber is less affected.
  • Number of devices — Multiple users streaming or downloading share the bandwidth.

How to Improve Your Internet Speed

  1. Use a cable instead of Wi-Fi when possible — especially for desktop PCs
  2. Place the router centrally, avoid cabinets and metal that block the signal
  3. Upgrade the router if it's older than 3–5 years — newer standards (Wi-Fi 6) give better performance
  4. Use the 5 GHz band for speed (2.4 GHz has longer range but lower speed)
  5. Restart the router regularly — memory can fill up over time
  6. Check that no background programs are downloading or streaming
  7. Update the router with the latest firmware
  8. Consider mesh Wi-Fi or Wi-Fi extenders for larger homes
  9. Compare with neighbors — if they have the same issue, it may be the ISP or area
  10. Switch DNS server (e.g. 1.1.1.1 or 8.8.8.8) — rarely affects speed, but can improve experience

Fiber vs DSL vs Mobile Broadband

Fiber is generally the most stable choice — symmetric speed, low ping and little affected by distance. DSL/copper (ADSL, VDSL) depends on distance to the exchange; speed drops the farther you are. Mobile broadband (4G/5G) is flexible and good for vacation homes, but speed varies with signal strength and network load.

For home office and streaming, fiber is recommended where available. Mobile broadband can be sufficient for lighter use, but ping is often higher — which affects gaming and video calls.

Complaining to Your Internet Provider

If your speed is consistently well below what you pay for, you should document and complain:

  1. Run speed tests over several days, at different times. Note time, result and whether you used cable or Wi-Fi.
  2. Restart the router and test again — providers often ask you to do this first.
  3. Call customer service and present your documentation. Ask for line troubleshooting.
  4. If the problem isn't resolved, you can escalate or consider switching providers. Consumer protection agencies often have guidance on telecom complaints.

Frequently Asked Questions About Internet Speed

Why is my speed lower than my plan?
Wi-Fi, routers, network load and distance to the server affect the result. You rarely get 100% of advertised speed. 70–90% is common. Use a cable and close other programs for the most accurate test.
What's the difference between Mbps and MB/s?
Mbps (megabits per second) is what internet providers use. MB/s (megabytes per second) is often used for download speed. 1 byte = 8 bits, so 100 Mbps ≈ 12.5 MB/s.
Why is ping important?
Ping measures response time — how quickly the server responds. Low ping is crucial for gaming, video calls and real-time communication. High ping causes delay and 'lag'.
Should I use cable or Wi-Fi for the speed test?
Cable gives the most accurate result and shows what the line actually delivers. Wi-Fi test shows what you experience in practice. Test both — if cable is good but Wi-Fi is poor, the problem is the router or placement.
How often should I test my speed?
When having issues: test several times over a few days. Otherwise: an occasional test (e.g. monthly) is enough to keep track. Remember that speed varies with time of day.
Can VPN affect my speed?
Yes. VPN encrypts traffic and routes it through an extra server, which typically increases ping and can reduce speed. Learn more about privacy and VPN.
What's good speed for video calls?
Zoom and Teams recommend 2–4 Mbps for HD video. For multiple participants and HD quality: 25–50 Mbps down and 5–10 Mbps up. Ping under 100 ms is desirable.
Why does speed vary between different speed tests?
Tests use different servers, algorithms and times. Server load and distance affect the result. Run several tests and look at the average.

Related Articles