How does it work?
- Type or paste your data.
- The result appears instantly.
- Copy or download the result.
Why use Internet Speed Test?
- ✓ 100% free, no limits, no watermark
- ✓ No sign-up, no install
- 🔒 Files processed locally: full privacy
- 📱 Works on desktop, tablet and mobile
Frequently asked questions
What speed do I need for HD video?
At least 5 Mbps for HD and 25 Mbps for 4K, per screen.
Why do results vary?
Wi-Fi, other connected devices and time of day strongly affect speed. Test over a cable if you can.
Why is my speed below the plan?
Wi-Fi, distance from the router, peak hours and the device reduce real speed.
What speed do video calls need?
3–5 Mbit/s per HD call, both down and up, is enough.
Is this tool really free?
Yes, 100% free, with no sign-up, no watermark and no usage limit.
Are my files safe?
Yes. Processing happens directly in your browser: your files are never uploaded to a server or stored.