Transfer time calculator.
Enter a file size and your connection speed. The calculator converts the units for you and shows what the transfer takes at the full line, and at the speeds you are more likely to actually get.
= 12.5 MB/s (megabits ÷ 8 = megabytes)
Real transfers rarely hold the full line: standard TCP uploads lose speed over distance, other traffic shares the connection, and disks have limits too. Measure your real speed at speed.cloudstud.io and it can prefill this calculator. Calculations use decimal units (1 GB = 1,000 MB).
Common shoots at common speeds
| Size | 50 Mbps | 100 Mbps | 500 Mbps | 1 Gbps |
|---|---|---|---|---|
| 50 GB | 2h 13m | 1h 6m | 13m 20s | 6m 40s |
| 250 GB | 11h 6m | 5h 33m | 1h 6m | 33m 20s |
| 1 TB | 1d 20h | 22h 13m | 4h 26m | 2h 13m |
| 4 TB | 7d 9h | 3d 16h | 17h 46m | 8h 53m |
Best-case times at the full line, decimal units. Distance, shared connections, and disks push real times higher.
Transfer time questions
How do I calculate file transfer time?
Divide the file size in megabytes by your speed in megabytes per second. Internet speeds are quoted in megabits, so divide the Mbps figure by 8 first: a 100 Mbps line moves about 12.5 MB per second, so an 80 GB file takes roughly 1 hour 47 minutes at best.
Why is my real transfer slower than the calculator says?
The calculator shows the ceiling for your line. Standard TCP uploads lose speed as distance to the destination grows, other traffic shares your connection, and slow disks can cap throughput. That is why the calculator also shows 75% and 50% scenarios.
What is the difference between Mbps and MB/s?
Mbps is megabits per second, how internet plans are sold. MB/s is megabytes per second, how file sizes and copy speeds are shown. One byte is 8 bits, so divide Mbps by 8 to get MB/s.
How long does it take to upload 1 TB of footage?
At 100 Mbps about 22 hours best case; at 500 Mbps about 4.5 hours; at 1 Gbps about 2.2 hours. Long distances and shared connections push real times higher, which is where accelerated transfer tools earn their keep.
Move footage faster.
CloudStudio transfers use UDP acceleration to hold speed over distance, resume interrupted uploads, and verify every file on arrival. Measure your line at speed.cloudstud.io first.