Why Is My Internet Slow?

Slow internet usually comes from Wi‑Fi issues, congestion, or outdated equipment. Use this checklist to isolate the cause.

Common causes

  • Wi‑Fi interference: Thick walls, neighbors, and microwaves weaken signals.
  • Router placement: Hidden or low routers reduce coverage.
  • Too many devices: Streaming, gaming, and downloads compete for bandwidth.
  • ISP congestion: Peak hours can slow entire neighborhoods.
  • Old hardware: Routers older than 4–5 years bottleneck speeds.

Quick fixes

  • Restart the modem and router.
  • Test on Ethernet to isolate Wi‑Fi problems.
  • Move closer to the router or use a mesh system.
  • Pause large uploads during calls or gaming.

How to confirm the issue

Run multiple tests at different times. If speeds drop only at night, you may be seeing ISP congestion. If Ethernet is fast but Wi‑Fi is slow, your router or Wi‑Fi environment is the culprit.

Run a Speed Test

Related Guides

Improve Wi‑Fi speed in apartments

Steps for dense environments.

How to read speed test results

Understand your metrics.

Ping vs jitter explained

Latency and stability tips.

Quick Answers

What’s the most common cause?

Weak Wi‑Fi signal and congestion are the top causes in most homes.

Should I upgrade my plan?

Only after you confirm Wi‑Fi and device limits aren’t the issue.

How can I test reliably?

Run an Ethernet test as a baseline, then compare to Wi‑Fi.

What is the most common mistake?

Relying on a single test result or ignoring Wi‑Fi conditions is the most common mistake.