Free internet tools for South Africa
Is it your internet, or is it them?
Test your speed, find out why your connection is slow, see your IP address and check if a website is down — in seconds, on any device.
Four tools, one answer
Everything you need when the internet acts up
Each tool works in your browser on phones, tablets and computers. No app. No account.
Internet speed test
Download, upload, ping and jitter in about 30 seconds — with a plain-English verdict.
Start →
Why is my internet slow?
Answer 3 quick questions and get a step-by-step diagnosis and fix list.
Start →
What's my IP address?
See your public IP, internet provider, location estimate and more.
Start →
Is a website down?
Check if any website is down for everyone or just for you.
Start →How NetCheck helps
From “it’s slow” to “it’s fixed”
Test
Measure your real download, upload, ping and jitter against servers in South Africa — and see what your speed is actually good for.
Run a speed test →Diagnose
Is it your Wi-Fi, your device, your router or your provider? Our diagnosis checks the usual suspects and tells you what to fix first.
Diagnose my connection →Fix or report
Follow the step-by-step fixes, or copy a clear report with real numbers to send to your provider’s support team.
How to log a fault →Built for South African connections
Why people use NetCheck
- Local servers. Tests run on Cloudflare’s network with servers in Johannesburg, Cape Town and Durban.
- Data saver for mobile and LTE. Keep tests small when every megabyte counts.
- Plain-English results. Not just numbers — we tell you if you can stream 4K, game or take video calls.
- Down for everyone, or just you? Our checker tests websites from our servers and from your device.
- Private by design. Your speed history is saved only on your own device.
Popular guides
How much internet speed do I need?
Use our household calculator to pick a package that’s fast enough — without overpaying.
Wi-FiHow to improve your Wi-Fi signal at home (12 fixes that work)
Practical, mostly free fixes for weak Wi-Fi and dead zones in South African homes.
PowerHow to keep your internet on during power cuts
Mini UPS, inverter or power bank? Plus a calculator to see how long your router will last.
Frequently asked questions
Is NetCheck free?
Yes. Every tool on NetCheck is free to use, with no sign-up and no app to install. The site is supported by advertising.
Which speed-test servers does NetCheck use?
Tests run against Cloudflare’s global network, which has servers in Johannesburg, Cape Town and Durban. You are automatically tested against the server closest to you, so results reflect what you actually get in South Africa.
Will the speed test use a lot of mobile data?
A full test on fast fibre can use a few hundred MB. Switch on Data saver (on by default when we detect a mobile network) to keep a test to roughly 15–60 MB — much less on slower connections.
How do I know if a website is down or if it’s just me?
Type the address into our Is it down? checker. We test it from our servers and from your device, so you can see whether the problem is the website or your own connection.
My internet is slow — where do I start?
Run the free diagnosis. It tests your speed, lag, stability and access to popular services, then gives you a prioritised fix list and a report you can send to your provider.
Ready? It takes 30 seconds.
Find out what your connection can really do.