So if cant know internet highest speed then what can

**Conclusion (TL;DR)**
To discover your real “highest Internet speed,” switch from `ping` (latency-only) to a *throughput* test such as `speedtest-cli`, `iperf3`, or a large-file `curl` download. All three run happily inside Termux on Android.

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## 1 . Why `ping` stops where “speed” begins
`ping` sends 56-byte ICMP probes. Even on a 1 Gbps link that payload finishes in < 1 µs; the remaining 10–50 ms you see is just propagation and queueing delay. Throughput never gets a chance to reveal itself, so `ping` can’t tell you the line’s capacity.

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## 2 . Tools that *do* measure bandwidth

| Tool | What you learn | Pros | Typical Termux commands |
|------|----------------|------|-------------------------|
| speedtest-cli (Ookla) | Download & upload Mbps vs. a nearby Speedtest.net server | One-command, worldwide servers | `pkg install python -y` → `pip install speedtest-cli` → `speedtest` |
| iperf3 | Raw TCP/UDP throughput, jitter, loss; you control both ends | Works on LANs or WANs; repeatable | `pkg install iperf3 -y` → `iperf3 -s` on one device, `iperf3 -c ` on Termux |
| curl / wget big file | Real-world HTTP speed; good for quick checks | Nothing to install beyond curl | `curl -o /dev/null -w '%{speed_download} bit/s\n' https://speed.hetzner.de/100MB.bin` |
| fast-cli | Netflix’s Fast.com test from CLI | Lightweight, open source | `npm i -g fast-cli` → `fast` |

> Termux tip: after `pkg update && pkg upgrade`, all of the above commands install without root.

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## 3 . Reading the numbers (example: speedtest-cli)

Speedtest by Ookla

Download: 92.76 Mbps
Upload: 37.51 Mbps
Latency: 8.13 ms (jitter 0.55 ms)

Meaning:
• At best you can pull **~93 Mbps** down and push **~38 Mbps** up right now.
• Latency and jitter are also shown so you still know interactive quality.

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## 4 . Extra diagnostics for power users

1. **MTU discovery** – `ping -c 4 -M do -s 1472 8.8.8.8` nudges you toward the largest packet that fits, helping spot fragmentation issues (still not bandwidth).
2. **Bufferbloat** – Run `ping` *while* you stream an `iperf3` test; soaring RTTs indicate queue congestion.
3. **Route capacity** – Combine `mtr` with `iperf3` to see which hop saturates first.

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## 5 . Putting it all together in Termux (quick script)

#!/data/data/com.termux/files/usr/bin/bash
pkg update -y && pkg install python curl -y
pip install --upgrade speedtest-cli
echo "== Speedtest.net =="
speedtest --simple
echo "== HTTP test (100 MB) =="
curl -o /dev/null -w '\nAverage speed: %{speed_download} bit/s\n' \
 https://speed.hetzner.de/100MB.bin

Run it, grab a coffee, and you’ll come back to solid, comparable figures you can track over time or share with your ISP.

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### Takeaway
• `ping` = latency.
• Bandwidth = `speedtest-cli`, `iperf3`, or a big download.
Once you start using the right tool, you’ll *really* know how fast your Internet can fly—no guesswork required. Happy measuring!