# Telekom internet speed test – Step-by-step guide for accurate measurement
Many people believe that the numbers displayed on the router or a quick online test are enough to find out **how fast their Telekom internet actually is**. The reality is much more nuanced. A poorly performed measurement can show a 30–50 % deviation from actual performance – and this can also result in financial loss if you overpay for a package you can't fully utilize, or if you can't work effectively from home due to underestimated speed.
This article **provides a step-by-step guide on how to perform an accurate Telekom internet speed test**, what the most common mistakes are, and how to interpret the results – so that in the end, you can be sure you're getting what you pay for.
## Why is accurate measurement important?
Magyar Telekom (and any provider) guarantees contractual speed within the framework of **„fair use policy”**. This means: achieving the advertised maximum (e.g., 500 Mbps, 1 Gbps) is not constant, but the **guaranteed minimum speed** (typically 30–50 % of the maximum) should appear in the measurement.
If you don't measure accurately:
– **You cannot file a complaint** with the provider based on valid grounds – a „slow” feeling is not enough.
– **You may overpay** for a more expensive package if a lower one would suffice.
– **You don't know the real limits** – streaming, video conferencing, cloud sync, gaming quality depend on it.
**In short: accurate measurement is your right and protects your money.**
## Preparations – Before you start anything
Most mistakes are made here. Follow this checklist **before every measurement**:
### 1. Switch to a wired connection (This is the most important!)
Wi-Fi **never provides an accurate result** regarding provider speed. Why?
– Interference: neighbors' routers, microwave ovens, Bluetooth devices.
– Congested channels: often 10+ networks operating in the 2.4 GHz band.
– Signal strength degradation: walls, floors, distance.
– Router hardware limitations: many older routers cannot handle 500+ Mbps over Wi-Fi.
**Action:** Connect **using a CAT5e or CAT6 network cable** directly to the LAN port of the router (or ONT). If your laptop doesn't have an RJ45 port, buy a USB‑C / USB‑A network adapter – it costs 2000–4000 HUF and can be used for decades.
### 2. Close all background processes
– Windows: **Task Manager** (Ctrl+Shift+Esc) → Sort by Network column → close downloaders, cloud sync (OneDrive, Dropbox, Google Drive), Steam, Epic, Windows Update.
– macOS: **Activity Monitor** → Network tab → same principle.
– Mobile/Tablet: turn off Wi-Fi, or use Airplane mode.
– Smart TV, consoles, IoT devices: unplug them from the power outlet if possible.
### 3. Only one device should be active on the network
For the duration of the measurement, **only the testing computer** should be connected to the router. Every other device „takes away” a portion of the bandwidth.
### 4. Choose the appropriate server
speedtest365.hu automatically selects the nearest, least loaded server. If you can choose manually, select a **Budapest or regional Telekom server** – the lowest ping, the most accurate result.
### 5. Run at least 3 measurements at different times
– Morning (6–8 AM): low load, „ideal” result.
– Work hours (10 AM–4 PM): realistic average.
– Peak time (7–10 PM): highest load, here the real guaranteed speed shows.
– Weekend vs. weekday: differences may occur.
## Step-by-step measurement guide
### Step 1: Open the speedtest365.hu website
In your browser, type: **https://speedtest365.hu**
No registration is needed, no ads run, the interface is in Hungarian, and it uses a server optimized for the Telekom network.
### Step 2: Check the selected server
By clicking the „Change Server” button, you can see which server will be used for the measurement. If a Telekom server is not selected, choose one from Budapest or the nearest major city.
### Step 3: Start the test
By clicking the large **„START”** button, the measurement runs in three phases:
**Ping (latency)** – in ms, ideal < 20 ms, acceptable < 50 ms., **Download speed** – in Mbps/Gbps, this is the most important for you. **Upload speed** – in Mbps/Gbps, critical for video calls, cloud backups, streaming.
If the download speed is **consistently** (average of 3 measurements) **below** the guaranteed minimum, you have the right to file a complaint and request a plan change or discount.
### IPv6 vs IPv4
Telekom has supported IPv6 for a long time. speedtest365.hu tests both. If the IPv6 result is significantly worse, it may be a router configuration issue (e.g., missing IPv6 firewall rule, or overloaded DS-Lite / MAP-E gateway).
## Troubleshooting – If the result doesn't match
| Problem | Possible Cause | Solution |
|———-|—————|———-|
| **Download 50–70% of maximum even with cable** | Router CPU overload, old firmware, NAT table full | Restart router, update firmware, factory reset |
| **Upload drastically low (< 10 Mbps on a 1 Gbps plan)** | Asymmetric plan (normal for GPON), or noisy upstream channel | Check your contract's guaranteed upload speed; if it's also low, report it to Telekom | 50 ms, jitter > 30 ms** | Wi‑Fi measurement (faulty), or network congestion at the ISP | Measure only with cable; if still high with cable, file a fault report |
| **Packet loss > 1%** | Cable fault, port fault, ONT fault | Replace the cable, try a different LAN port; if no improvement, call Telekom |
| **Speed fluctuates 2x‑3x per hour** | Shared GPON network, overload during peak hours | Measure during peak hours too; if below guaranteed minimum, request a fix |
**Pro tip:** If your router supports it, check the **DSL/GPON statistics** (SNR, attenuation, FEC/CRC errors). These show the physical line status – if CRC errors increase, the fault is on the line, not in the router.
⚡⚡ Other tools – Why speedtest365.hu is the best choice?
| Tool | Advantages | Disadvantages |
|——–|———|———–|
| **speedtest365.hu** | Hungarian interface, Telekom‑optimized servers, no ads, free, detailed statistics (jitter, packet loss, IPv4/IPv6), shareable link | – |
| **Ookla Speedtest.net** | Globally known, apps for all platforms | Ads, English interface, server selection more complicated, data collection |
| **Fast.com (Netflix)** | Simple, download only, from Netflix servers | No upload, ping, jitter; measures from Netflix CDN, not the raw line |
| **Telekom's own meter (if available)** | ISP's „official” result | Often measures only on the internal network, not towards the internet, less transparent |
**The advantage of speedtest365.hu:** the servers are **in Hungary**, within the **Telekom backbone**, so the measurement is as close as possible to the real „last mile” performance. No routing via foreign IXPs, no CDN‑specific optimization – pure, raw internet speed.
⚡⚡ Frequently Asked Questions (FAQ)
⚡⚡⚡ How many measurements are enough to decide?
**Minimum 3 measurements**, at 3 different times (morning, afternoon, evening). If all three are similar, the average is reliable.
⚡⚡⚡ What is the difference between „download” and „upload”?
– **Download:** receiving data from the internet (movies, websites, file downloads).
– **Upload:** sending data to the internet (video calls, cloud backup, streaming, email attachments).
On Telekom's GPON network, asymmetry is normal: upload is typically 10–20% of download.
⚡⚡⚡ Why is Wi‑Fi slower than cable?
Wi‑Fi is a **shared medium**: every device, wall, microwave, neighbor's network reduces speed. Cable is a dedicated, interference‑free path.
⚡⚡⚡ What should I do if the result is below the guaranteed minimum?
Take **screenshots / links of at least 3 measurements** from speedtest365.hu.
Contact Telekom customer service (phone, chat, or customer portal).
Send the results and request **troubleshooting / plan modification / discount**.
If they don't help: **NMHH consumer protection complaint** (free, can be submitted online).
⚡⚡⚡ How accurate is speedtest365.hu?
The measurement reflects the real line speed with **±5–10% accuracy**, if you measure with a cable on a clean network. This is the best you can achieve in home conditions.
⚡⚡ Summary – 5 keys to accurate measurement
**Always measure with a cable** – Wi‑Fi doesn't count for ISP speed.
**Clean up the network** – one device, no background downloads.
**Use speedtest365.hu** – Hungarian, Telekom‑optimized, detailed, free.
**Measure at least 3 times, at different times** – including peak hours.
**Compare with your contract's guaranteed minimum** – if below, take action.
⚡⚡ Ready to find out your real speed?
Don't let suspicion or a „feeling” of slowness decide for you. **Run a free, accurate measurement on speedtest365.hu now**, and find out exactly: **how much you're really getting from Telekom**.
[🔍 **Start the Telekom internet speed test now** →](https://speedtest365.hu)
*The measurement takes 30 seconds, requires no registration, and you'll get detailed results immediately – download, upload, ping, jitter, packet loss, IPv4/IPv6. Save the result, and if it's not right, you have proof in hand for your ISP.*