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AT&T Fiber Speed Test

Test Your AT&T Fiber Internet Speed

AT&T Fiber delivers symmetric internet speeds over a 100% fiber network across much of the United States, with plans up to 5 Gbps. This test measures your actual AT&T Fiber download speed, upload speed and latency, helping you confirm you're receiving the speeds in your plan.

Typical AT&T Fiber Speed Test Speeds
AT&T Fiber 5 Gig
↓ 4,500–5,000 Mbps
↑ 4,500–5,000 Mbps
Ping 1–5 ms
AT&T Fiber 1000 (1 Gig)
↓ 900–1,000 Mbps
↑ 900–1,000 Mbps
Ping 2–8 ms
AT&T Fiber 500
↓ 450–500 Mbps
↑ 450–500 Mbps
Ping 3–10 ms
AT&T Fiber 300
↓ 270–300 Mbps
↑ 270–300 Mbps
Ping 5–12 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 AT&T Fiber Speed Test
AT&T Fiber plans are fully symmetric — upload should equal download. A mismatch usually means a WiFi or device bottleneck.
Use the AT&T Smart Home Manager app to check real-time speeds and connected devices.
For multi-gig plans (2 Gig/5 Gig), you need a 2.5G or 10G ethernet adapter — standard gigabit ports cap at ~940 Mbps.
BGW gateways from AT&T support WiFi 6 — ensure your devices support it to approach gigabit speeds wirelessly.
If speeds are low, check for ONT alarm lights and restart the gateway before contacting support.

AT&T Fiber Speed Test – FAQ

Common questions about at&t fiber speed test

Why is my AT&T Fiber speed test lower than my plan?

Most often this is due to WiFi limitations or an ethernet port that caps at 1 Gbps even on multi-gig plans. Use a wired connection with appropriate hardware (2.5G/10G NIC for multi-gig plans) for accurate results.

Is AT&T Fiber really symmetric?

Yes, all AT&T Fiber plans provide equal upload and download speeds since they run on a pure fiber-optic network, unlike AT&T's older DSL (Internet Air or U-verse) services which are asymmetric.

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