Bandwidth and Download Time Calculator
How long a transfer actually takes on a given link, and how many concurrent streams a connection carries before it is the bottleneck.
7 min
Transfer takes
29
Streams the link carries
| Transfer takes | 7 min |
|---|
| Usable after headroom | 736.0 Mbps |
|---|---|
| Streams the link carries | 29 |
| Those streams use Megabits per second. | 725.0 Mbps |
| Spare after them | 195.0 Mbps |
Megabits are decimal and so are gigabytes here, because that is how link speeds and drive capacities are both quoted. Substituting 1024 anywhere in this chain gives an answer about 7% out that looks entirely plausible.
Overhead covers framing and ordinary retransmission, not a saturated link. Once a connection is at capacity, latency and loss climb and the effective rate falls further than any fixed percentage predicts — which is what the headroom field is for.
Nothing here is sent anywhere; the numbers live in the page address.