Account for overhead
Real-world downloads rarely sustain the exact advertised line rate.
🌐 Internet speed converter
Mbps to MB/s Converter
Convert megabits per second to megabytes per second, estimate download time, and compare common broadband speeds.
Direct answer: Divide Mbps by 8 to get MB/s. For example, 100 Mbps is 12.5 MB/s before network overhead.
Mbps to MB/s Converter calculator
Formula: megabytes per second = megabits per second ÷ 8; estimated seconds = file size MB ÷ MB/s.
Quick reference table
| Mbps | MB/s | 1 GB download estimate |
|---|---|---|
| 10 Mbps | 1.25 MB/s | ~13 min 20 sec for 1 GB |
| 25 Mbps | 3.125 MB/s | ~5 min 20 sec for 1 GB |
| 50 Mbps | 6.25 MB/s | ~2 min 40 sec for 1 GB |
| 100 Mbps | 12.5 MB/s | ~1 min 20 sec for 1 GB |
| 300 Mbps | 37.5 MB/s | ~27 sec for 1 GB |
| 1,000 Mbps | 125 MB/s | ~8 sec for 1 GB |
Use MB/s for file transfers
Browsers and download apps often display MB/s, while internet plans advertise Mbps.
Related data and unit converters
FAQ
Is Mbps the same as MB/s?
No. Mbps means megabits per second. MB/s means megabytes per second. There are 8 bits in 1 byte.
Why is my real download slower than the calculator?
Wi-Fi quality, server limits, protocol overhead, device speed, VPNs, and congestion can reduce real throughput.
How long does a 1 GB file take at 100 Mbps?
At perfect 100 Mbps throughput, 1 GB decimal is about 80 seconds. Real downloads are often slower.
Source snapshot: Traffic radar 2026-05-12-0029: P0 unit-conversion expansion after pre-gate passed at 1,026 quality URLs. Built as original data-size/speed calculators; no external repository content copied. Formulas reviewed 2026-05-12; decimal and binary assumptions are labeled on-page.