Mbps to MB/s Converter — Megabits per Second to Megabytes per Second
This converter turns the megabits per second your ISP advertises into the megabytes per second your downloads report — the single most useful network conversion there is.
Quick answer: Divide Mbps by 8 to get MB/s: 100 Mbps = 12.5 MB/s, 500 Mbps = 62.5 MB/s, 1,000 Mbps = 125 MB/s. Subtract another 5–10% for protocol overhead to predict real-world speed.
Both conventions give the same number for this pair, so no ambiguity applies here.
| Mbps | MB/s |
|---|---|
| 10 | 1.25 |
| 50 | 6.25 |
| 100 | 12.5 |
| 300 | 37.5 |
| 500 | 62.5 |
| 1,000 | 125 |
| Formula | MB/s = Mbps ÷ 8 · Mbps = MB/s × 8 |
|---|---|
| 100 Mbps | 12.5 MB/s peak, ~11.5 MB/s realistic |
| 1 Gbps | 125 MB/s peak, ~115 MB/s realistic on wired Ethernet |
| Wi-Fi reality | Expect 50–70% of the link rate at range; a wall can halve it again |
Read your speed test properly
Speed tests report in Mbps because that is what the network measures. Browsers and game launchers report MB/s because that is how files are stored. A 450 Mbps speed test therefore corresponds to roughly 56 MB/s in Steam — and if Steam shows 20 MB/s, the bottleneck is the server or the disk, not the connection.
Match speeds to activities
4K streaming needs about 15–25 Mbps per stream, 1080p about 5 Mbps, cloud gaming 15–35 Mbps with low latency, and a 4K video call about 4 Mbps up. Upload matters more than most people think: a 10 Mbps upload takes 13 minutes to push a 1 GB video to YouTube, while 100 Mbps upload does it in 80 seconds.
When to use this calculator
- Predicting download times before buying a game or dataset.
- Checking whether a plan can support several 4K streams at once.
- Comparing an Ethernet speed test result with a Wi-Fi one to find the bottleneck.
- Translating a router's WAN port rating (Mbps) into copy speeds (MB/s).