Last updated: March 2026
What Is a Broadband Speed Test?
A broadband speed test measures the actual performance of your home internet connection. It tells you whether your ISP is delivering the download and upload speeds you are paying for, and whether your latency is low enough for real-time applications.
Broadband refers to any high-speed internet connection — fiber, cable, DSL, or fixed wireless. The FCC defines broadband as 100 Mbps download and 20 Mbps upload as of 2024, though many plans now offer speeds well beyond this threshold.
The US average broadband speed is approximately 214 Mbps download. Fiber connections in major cities routinely deliver 500-1,000 Mbps, while rural areas may still rely on slower DSL or satellite connections.
How to Check If Your ISP Is Delivering
Step 1: Connect your computer directly to your modem or router via Ethernet cable. This eliminates WiFi as a variable.
Step 2: Close all other applications and browser tabs to ensure nothing else is using bandwidth.
Step 3: Run the speed test above. Compare your download speed to what your ISP plan promises.
Step 4: Run multiple tests at different times of day. If you consistently get less than 80% of your advertised speed, contact your ISP with your results.
ISPs typically deliver 80-95% of advertised speeds under good conditions. Consistent underperformance may indicate a problem with your line, modem, or the ISP's network in your area.
Broadband Types Compared
Fiber optic: The gold standard. Speeds from 300 Mbps to 10 Gbps with symmetric upload speeds and very low latency (1-5ms). Light travels through glass strands — no electromagnetic interference. Available in about 50% of US homes.
Cable: Uses coaxial cable (same as TV). Speeds from 50 to 1,200 Mbps download, but upload speeds are much lower (5-50 Mbps). Bandwidth is shared among neighbors, so speeds drop during peak hours. Available to about 90% of US homes.
DSL: Uses phone lines. Speeds from 5 to 100 Mbps, heavily dependent on distance from the telephone exchange. Dedicated line means consistent speeds. Being phased out in favor of fiber.
Fixed wireless: Uses radio signals from a nearby tower. Speeds from 25 to 1,000 Mbps depending on provider. An increasingly popular option for rural areas without wired broadband.
Satellite: Available everywhere. Traditional satellite (Hughesnet, Viasat) offers 25-150 Mbps with high latency (600ms+). Low-earth orbit satellite (Starlink) offers 50-500 Mbps with much lower latency (25-60ms).
Frequently Asked Questions
How do I test my broadband speed?
Click 'Start Speed Test' above. The test measures your broadband download speed, upload speed, and ping in under 30 seconds. For the most accurate broadband measurement, use a wired Ethernet connection directly to your modem or router.
What is a good broadband speed?
For a single user, 25 Mbps is sufficient for 4K streaming and video calls. A household of 3-5 people should aim for 100+ Mbps. The US average broadband speed is approximately 214 Mbps. Fiber broadband typically offers 300-1000+ Mbps with symmetric upload speeds.
Why is my broadband slower than advertised?
ISPs advertise 'up to' speeds under ideal conditions. Actual broadband speeds are affected by the type of connection (fiber vs cable vs DSL), network congestion during peak hours, the quality of your modem and router, internal wiring, and the number of devices on your network.
What types of broadband are available?
Fiber (fastest, 300-10,000 Mbps, symmetric speeds). Cable (fast, 50-1,200 Mbps, shared bandwidth with neighbors). DSL (moderate, 5-100 Mbps, speed depends on distance from exchange). Fixed wireless (variable, 25-1,000 Mbps). Satellite (improving, 25-500 Mbps, higher latency).
How often should I test my broadband speed?
Test regularly — at least monthly and whenever you notice slow performance. Run tests at different times of day, as speeds often drop during peak evening hours (7-11 PM). Keep a log to track trends and have evidence if you need to contact your ISP about underperformance.