Internet speed affects almost everything we do online, yet the numbers quoted by providers — megabits, gigabits, upload, download — are confusing to most people. Here's what they actually mean and how much you genuinely need.
Understanding the Units
1 Megabit (Mb) = 1 million bits | 1 Gigabit (Gb) = 1,000 Mb
File transfer rate (MB/s) = Speed in Mbps ÷ 8 (since there are 8 bits in a byte)
A 100 Mbps connection transfers approximately 12.5 megabytes of file data per second — file sizes are measured in bytes, but speeds are quoted in bits.
How Much Speed Do You Need?
| Activity | Recommended Speed |
|---|---|
| SD video streaming | 3-5 Mbps |
| HD video streaming (1080p) | 5-8 Mbps |
| 4K streaming | 15-25 Mbps |
| HD video calls | 1.5-5 Mbps |
| Online gaming | 3-6 Mbps (latency matters more) |
| Household of 4, mixed use | 100 Mbps |
Download vs Upload
Download speed moves data from the internet to your device — used for streaming, browsing, downloads. Upload speed moves data from your device outward — used for video calls, cloud backups, live streaming. Most residential connections are asymmetric, with download speeds far higher than upload. Full-fibre (FTTP) increasingly offers symmetric speeds, important for remote workers and content creators.
Latency and Ping
Latency measures the time for data to travel to a server and back, in milliseconds. Under 100ms is fine for browsing; under 150ms for video calls; under 30ms is ideal for competitive gaming. Fibre connections typically have lower latency than cable or ADSL.
Testing Your Speed
Use a reputable tool such as Speedtest by Ookla or Fast.com, and connect via an ethernet cable rather than Wi-Fi wherever possible for the most accurate reading. Wi-Fi introduces its own set of variables — distance from the router, interference from walls and other devices, and network congestion — that can significantly reduce your measured speed compared to what your connection is actually capable of delivering.
It's also worth testing at different times of day. Many broadband connections slow down noticeably during peak evening hours, when local infrastructure is under the greatest demand from everyone in the area streaming and browsing simultaneously. If your speed drops significantly in the evenings compared to during the day, this points to a contention issue with shared local infrastructure rather than a fault with your own router or equipment.
Use Speedtest by Ookla or Fast.com, connected via ethernet rather than Wi-Fi for accuracy. Test at different times of day — many connections slow during peak evening hours due to local network contention, not your equipment.
Choosing the Right Broadband Package
Before upgrading to a faster, more expensive package, it's worth honestly assessing your household's actual usage patterns rather than assuming faster is always better value. A single person who mostly browses, emails, and occasionally streams in standard definition gains little practical benefit from upgrading from 50 Mbps to 500 Mbps, since the bottleneck in everyday browsing speed is rarely the connection itself once you're above roughly 30-50 Mbps for typical single-user activity.
Where a faster package genuinely matters is in households with multiple simultaneous heavy users — several people streaming 4K content, gaming, and video calling at the same time — or for anyone working from home with regular large file uploads or frequent video conferencing. In these situations, the practical benefit of additional bandwidth is real and noticeable, making the case for a higher-tier package considerably stronger than for a lighter single-user household.