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Convert between Mbps, Gbps, MB/s, and more. Calculate download times for any file size.
Data transfer rate measures how quickly data moves between devices or over a network, expressed in bits per second (bps) or bytes per second (B/s), where 1 byte equals 8 bits.
| Connection Type | Mbps | MB/s |
|---|---|---|
| 4G LTE | 35 | 4.4 |
| 5G | 300 | 37.5 |
| Cable Internet | 100 | 12.5 |
| Fiber (1 Gbps) | 1,000 | 125 |
| USB 3.0 | 5,000 | 625 |
| USB 3.2 Gen 2 | 10,000 | 1,250 |
| Thunderbolt 4 | 40,000 | 5,000 |
| File Size | Time |
|---|---|
| 100 MB | 8.0 sec |
| 1 GB | 1m 22s |
| 5 GB | 6m 50s |
| 25 GB | 34m 8s |
| 100 GB | 2h 17m |
Formula
1 Mbps = 0.125 MB/s | download_time (s) = file_size (MB) ÷ speed (MB/s)Mbps = Megabits per second — network speed unit (1 Mbps = 1,000,000 bits/s)
MB/s = Megabytes per second — file transfer speed (1 MB/s = 8 Mbps)
÷ 8 = The factor between bits and bytes (1 byte = 8 bits)
Worked Example
Download a 1 GB file on 100 Mbps connection
Did you know? Internet service providers advertise speeds in Mbps (megabits per second), but file managers show transfer rates in MB/s (megabytes per second). A 100 Mbps connection delivers a maximum of 12.5 MB/s — always divide the advertised speed by 8 to find the real file transfer rate.
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