How long does it take to download 1 TB at 5 Mbps?
18 days 12 hr 26 min Theoretical minimum at full line rate (0.625 MB/s), real downloads typically run 5–15% slower. Edit the calculator and this updates live.
Mbps vs MB/s, why the math says 18 days 12 hr 26 min
Internet plans are sold in megabits per second (Mbps, small b). File sizes are shown in megabytes (MB, big B). One byte is 8 bits, so a 100 Mbps connection moves at most 12.5 MB of file data per second, divide your plan speed by 8 to get the number your download manager shows.
That factor of 8 is why a "100 meg" plan doesn't download a 100 MB file in one second: it needs 8 seconds in theory, and a little more in practice once protocol overhead (typically 5–15%), Wi-Fi conditions, and server limits are counted.
time = (1 TB × 8 bits/byte) ÷ 5 Mbps = 18 days 12 hr 26 min
1 TB at every common speed
| Connection speed | Download time |
|---|---|
| 5 Mbps (this page) | 18 days 12 hr 26 min |
| 10 Mbps | 9 days 6 hr 13 min |
| 25 Mbps | 3 days 16 hr 53 min |
| 50 Mbps | 1 day 20 hr 26 min |
| 100 Mbps | 22 hr 13 min 20 sec |
| 200 Mbps | 11 hr 6 min 40 sec |
| 300 Mbps | 7 hr 24 min 27 sec |
| 500 Mbps | 4 hr 26 min 40 sec |
| 1 Gbps | 2 hr 13 min 20 sec |
Other file sizes at 5 Mbps
| File size | Download time |
|---|---|
| 100 MB | 2 min 40 sec |
| 250 MB | 6 min 40 sec |
| 500 MB | 13 min 20 sec |
| 1 GB | 26 min 40 sec |
| 2 GB | 53 min 20 sec |
| 5 GB | 2 hr 13 min 20 sec |
| 10 GB | 4 hr 26 min 40 sec |
| 20 GB | 8 hr 53 min 20 sec |
| 50 GB | 22 hr 13 min 20 sec |
| 100 GB | 1 day 20 hr 26 min |
| 250 GB | 4 days 15 hr 6 min |
| 500 GB | 9 days 6 hr 13 min |
| 1 TB (this page) | 18 days 12 hr 26 min |
| 2 TB | 37 days 53 min |
Frequently asked questions
How long does 1 TB really take at 5 Mbps?
The theoretical minimum is 18 days 12 hr 26 min. Real downloads lose 5–15% to protocol overhead, Wi-Fi conditions, and server throttling, so plan on roughly 20 days 8 hr 53 min to 21 days 7 hr 6 min.
What is 5 Mbps in MB/s?
5 megabits per second equals 0.625 megabytes per second (divide by 8, because one byte is 8 bits). Your download manager reports MB/s, which is why the number looks smaller than your plan speed.
What speed do I need to download 1 TB in under 10 minutes?
At least 13,334 Mbps of real throughput. Add ~10% headroom for overhead when choosing a plan.
How long would 1 TB take on gigabit (1 Gbps)?
2 hr 13 min 20 sec, about 200× faster than 5 Mbps.