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Fiber Speed Test

Test Your Fiber Optic Internet Speed

Fiber optic internet (FTTH — Fiber To The Home) is the fastest and most reliable home internet technology available, offering symmetrical gigabit speeds and ultra-low latency. Unlike cable or DSL, fiber uses light signals through glass strands, immune to electrical interference. This test verifies your fiber connection is performing at its rated speed.

Typical Fiber Speed Test Speeds
Fiber 2.5 Gbps (Multi-Gig)
↓ 2,200–2,500 Mbps
↑ 2,000–2,400 Mbps
Ping 1–5 ms
Fiber 1 Gbps (Gigabit)
↓ 900–1,000 Mbps
↑ 850–950 Mbps
Ping 2–8 ms
Fiber 500 Mbps
↓ 480–510 Mbps
↑ 460–500 Mbps
Ping 3–10 ms
Fiber 100 Mbps
↓ 95–102 Mbps
↑ 90–100 Mbps
Ping 5–15 ms
0.0 Megabits per second
---Mbps download
---Mbps upload
Latency---
Server---
Download
0.0
Mbps
Upload
0.0
Mbps
Latency ---
ISP ---

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Tips to Improve Your Fiber Speed Test
Fiber delivers symmetric speeds — your upload should match your download. A large discrepancy indicates a problem.
For accurate gigabit fiber testing, you need an ethernet adapter capable of 1 Gbps+ (most modern laptops only have 100 Mbps ethernet — check your adapter spec).
WiFi is typically the bottleneck on fiber connections. WiFi 6 or a wired connection is needed to fully utilize 500 Mbps+ fiber plans.
If your fiber speed is significantly below plan speed, check the fiber cable and ONT status light — a red or amber light indicates a fiber line issue.
Fiber latency should be very low (2–10 ms). If your ping exceeds 30 ms on fiber, contact your ISP — it indicates a routing issue.

Fiber Speed Test – FAQ

Common questions about fiber speed test

Why is my gigabit fiber speed test showing only 300–400 Mbps?

This is almost always a WiFi limitation. Even WiFi 5 (802.11ac) with a good signal rarely exceeds 400 Mbps in real-world conditions due to overhead and interference. Connect your test device via a gigabit ethernet cable directly to the router to get your true fiber speed. If it's still slow via ethernet, check that your network card is gigabit-capable.

What is the difference between fiber and cable internet?

Fiber uses light signals through glass — it offers symmetric speeds, lower latency, and is unaffected by distance from the exchange. Cable (DOCSIS) uses coaxial copper cables — it's widely available and fast for download but has much slower upload speeds (typically 10–50 Mbps regardless of download plan). Fiber is the superior technology in every measurable metric.

How do I test if my fiber is FTTH or FTTC?

FTTH (Fiber To The Home) means fiber comes directly to your premises — you'll have an ONT (Optical Network Terminal) box on your wall. FTTC (Fiber To The Cabinet) means fiber runs to a street cabinet and the last mile to your home is copper — speeds degrade with distance and upload is slower. Check for an ONT device at your home; if it's just a DSL filter, you're on FTTC.

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