GrandSpeed - Internet Speed Test
Professional internet speed test for video livestreaming, conferencing, gaming & VoIP. Measures latency, bufferbloat, DNS resolution, and includes a data capacity calculator & results history.
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Frequently Asked Questions
Why can a speed test show a high download speed while video calls or games still feel laggy?
Download speed shows how much data can move to your device, but real-time apps also depend on latency, jitter, loaded latency, packet loss, and bufferbloat. A connection can have strong megabits per second and still feel slow when it gets busy.
What is the difference between idle latency and loaded latency?
Idle latency is measured when your connection is not busy. Loaded latency is measured during active downloads or uploads. Loaded latency is often more useful for real-world use.
Why are upload speeds often lower than download speeds?
Most internet plans are asymmetric because most users download more data than they upload. ISPs often give more capacity to download traffic.
Internet Speed Test Glossary
Download Speed
Download speed is how fast data moves from the internet to your device. It affects streaming, browsing, downloads, and software updates.
Upload Speed
Upload speed is how fast data moves from your device to the internet. It affects online forms, cloud uploads, and livestreaming.
Latency / Ping
Latency is the time it takes a small packet of data to travel to another device and back, measured in milliseconds. Low latency matters for real-time apps.
Jitter
Jitter is the gap between the highest and lowest latency values you measure. High jitter can hurt real-time apps even when average latency looks fine.
Bufferbloat
Bufferbloat happens when network devices keep too much buffer memory and do not manage it well, causing latency to spike when the connection is busy.
Speeds are measured against Cloudflare's global edge network.