Telstra Speed Test: How to Check Broadband & Mobile Speeds

The numbers on your Telstra speed test matter because they show whether you’re actually getting what you pay for. Telstra offers two official tools—one for home broadband, one through the My Telstra app for mobile data—and they each tell a different story about your connection. This guide walks you through how to use them, what the speed tiers actually deliver in real Australian homes, and what to do when the numbers fall short.

Official Telstra Speed Test: speedtest.telstra.com · My Telstra Speed Test: myservices.telstra.com.au/open/speed-test · Netflix Minimum: 25 Mbps · Ethernet Tip: Connect PC directly to modem for accuracy · Wi-Fi Tip: Stay close to the modem during tests

Telstra’s speed tier benchmarks show exactly what you should expect during peak evening hours across all plan types.

What should my Telstra speed be?

Telstra sells NBN plans under two naming systems: the older tiered labels (NBN 25, NBN 50, NBN 100, NBN 250, NBN 1000) and the newer speed-tier names (Basic, Standard Plus, Premium Speed, Superfast, Ultrafast). Both systems describe the same network capabilities, but the new labels include typical busy-period benchmarks that matter most for evening use.

Expected speeds for NBN plans

For the majority of Telstra NBN customers on NBN 25, 50, or 100 plans, the news is straightforward: Telstra’s typical evening speeds are identical to the maximum download speeds, according to Finder’s analysis of Telstra’s speed tiers. That means if you’re on an NBN 50 plan, you should see 50 Mbps during the 7pm–11pm peak window—not a reduced speed.

The pattern changes at higher tiers. Telstra’s Ultrafast NBN plan promises a maximum of 1000 Mbps but delivers a typical evening speed of 815 Mbps, according to Telstra’s own speed explainer. The NBN 1000 plan drops further to a self-reported typical evening speed of 700 Mbps.

Fixed Wireless Plus customers face the widest variance: during peak hours, speeds can range from 13 Mbps to 143 Mbps depending on local tower congestion, according to Telstra’s infrastructure data. If the local NBN wireless tower is congested, users may see less than 6 Mbps—barely functional for video streaming.

Factors affecting your speed

• Modem and cabling: Speeds may be lower due to outdated modems, poor cabling, or improper in-home wiring, Telstra cautions
• Network congestion: Peak-hour traffic on shared NBN infrastructure impacts experienced speeds
• NBN connection type: FTTP and HFC connections generally deliver higher sustained speeds than Fixed Wireless or FTTC
• Proximity to modem: Wi-Fi signals weaken with distance and physical barriers

Can I test my Telstra mobile internet speed?

Yes, and there are two official routes depending on what you need to measure. The My Telstra speed test page at myservices.telstra.com.au/open/speed-test lets you check your connection directly through your browser, while the My Telstra app provides the same functionality on mobile devices.

Using My Telstra app

• Open the My Telstra app and navigate to the speed test section
• Ensure you’re connected to the network you want to test (mobile data or Wi-Fi)
• Run the test and note both download and upload speeds
• For accurate mobile data testing, disconnect from Wi-Fi first

Users should ensure they’re connected to the correct internet connection before running a speed test, as testing on a mobile phone not connected to Wi-Fi will test mobile data speed rather than Wi-Fi speed, Telstra’s support guide notes.

Mobile vs home broadband testing

The official Telstra speed test at speedtest.telstra.com is primarily designed for home broadband connections. For mobile data testing, the My Telstra app or the Speedtest by Ookla tool at Speedtest.net provides a more complete picture of cellular performance.

Real-world testing on Telstra 4G in rural areas has shown 33 Mbps download, 26 Mbps upload, and 38 milliseconds latency during an evening clear of congestion, according to Regional Tech Hub measurements.

Why is Telstra internet so slow lately?

Slow speeds on Telstra can stem from several sources—some within your control, others tied to the network itself. Understanding which is which saves time on troubleshooting.

Common causes of slow speeds

• Hardware limitations: Older modems or routers that don’t support higher speeds create a bottleneck regardless of your plan tier
• In-home wiring issues: Poor internal cabling or incorrect NBN connection box placement reduces signal quality
• Wi-Fi interference: Neighboring networks, cordless phones, and physical walls all degrade Wi-Fi performance
• Network congestion: Shared NBN infrastructure can slow during peak hours when many users are online simultaneously

Peak hour congestion

Network congestion can impact NBN speeds experienced by users during the busiest periods, Telstra confirms. The 7pm–11pm window is when most residential networks feel the strain.

Speed tests should be run several times to ensure consistent results, and if results are erratic or vastly below expected amounts, rebooting the modem and re-running the test is recommended, according to TechRadar’s testing guide.

How can I improve my home internet speed?

The fastest path to accurate results—and potentially faster speeds—starts with how you run the test itself. Physical connection and hardware setup matter more than most users realize.

Telstra-specific tips

• Use an Ethernet cable: Connect your computer directly to the modem via Ethernet cable for the most accurate speed test result, bypassing Wi-Fi interference entirely
• Stay close to the modem on Wi-Fi: If Ethernet isn’t an option, position your device within a few meters of the modem and minimize physical barriers
• Restart your modem: Power cycling the modem clears temporary issues and refreshes the connection
• Test at different times: Running tests during off-peak hours (midday, early morning) establishes whether slow speeds are a congestion issue

Hardware upgrades

If your modem is more than three years old, it may lack the capacity to handle higher NBN tiers. Upgrading to a modern router that supports Wi-Fi 6 or higher can meaningfully improve wireless performance, especially in multi-device households.

Speed test results can be run through Speedtest.net, which is run by internet-speed authority Ookla (TechRadar). This provides a third-party benchmark alongside Telstra’s own tools.

Is 25 Mbps fast enough for Netflix?

For most streaming scenarios, 25 Mbps is sufficient—but “sufficient” depends on what you’re watching and how many devices are sharing the connection.

Streaming requirements

• Netflix SD quality: 3 Mbps minimum
• Netflix HD quality: 5 Mbps minimum
• Netflix 4K Ultra HD: 25 Mbps minimum (per Netflix’s official requirements)
• Stan, Amazon Prime Video: Similar ranges, typically 5–15 Mbps for HD

A Telstra NBN 25 plan with its full 25 Mbps capability handles Netflix 4K comfortably for a single user, provided no other devices are simultaneously consuming bandwidth.

Gaming and multi-device needs

Online gaming typically requires 10–25 Mbps for smooth performance, but latency (measured in milliseconds) matters more than raw download speed for real-time gaming. Download speeds should have higher numbers before “Mbps” while lower numbers are best for latency measured in milliseconds, according to Reviews.org’s speed explainer.

In a household with multiple users streaming, gaming, and browsing simultaneously, an NBN 50 or higher plan becomes necessary. The NBN 100 plan handles two 4K streams plus general browsing without contention.

What affects my Telstra speed test results?

Beyond your plan tier, several factors determine whether a speed test reflects your true connection quality. Some are easy to control; others require patience or professional help.

Connection method

• Ethernet (wired): Provides the most consistent, accurate measurement by eliminating Wi-Fi variables
• Wi-Fi 5GHz: Faster than 2.4GHz but with reduced range; ideal for devices near the modem
• Wi-Fi 2.4GHz: Slower but covers greater distance; introduces interference from other devices

Testing consistency

Running a speed test only once produces unreliable data. The recommended approach is to run tests at different times of day over several days, then calculate the average. If results vary by more than 20% between tests on the same connection, there may be an underlying issue worth investigating with Telstra support.

How accurate is the Telstra speed test?

Telstra’s official speed test tool at speedtest.telstra.com uses Ookla’s testing infrastructure and provides results comparable to the industry-standard Speedtest.net. The accuracy depends primarily on your testing setup, not the tool itself.

Third-party alternatives

Recommended speed test sites for Telstra include Telstra’s own speed test, Regional Tech Hub’s list of alternatives including nbn Sky Muster Plus for satellite services, SkyMesh, Aussie Broadband, Fast by Netflix for satellite connections, OzSpeedTest, and Speedtest by Ookla.

Using multiple speed test services gives a fuller picture. If Telstra’s tool and Speedtest.net agree within 5%, your results are likely accurate. Large discrepancies suggest a server-side issue worth reporting.

For Australian households, running an official Telstra speed test should be the first step whenever connection quality is in question. The tool is free, requires no account login for basic testing, and gives you concrete numbers to compare against your plan’s benchmarks. If those numbers fall short, the troubleshooting steps above—from restarting your modem to switching to an Ethernet connection—will isolate whether the problem is in your home or on Telstra’s network.