🔀 Bandwidth Converter
Enter a speed in any unit to convert it instantly between bit-rates (Mbps) and byte-rates (MB/s).
| 100000000 | bps |
| 100000 | Kbps |
| 100 | Mbps |
| 0.1 | Gbps |
| 12500000 | B/s |
| 12500 | KB/s |
| 12.5 | MB/s |
| 0.0125 | GB/s |
The core catch: 1 byte = 8 bits, so a bit-rate divided by 8 gives the byte-rate. 100 Mbps is 12.5 MB/s. Bit-rates (bps, Mbps) are how ISPs advertise speed; byte-rates (MB/s) are what download managers show. Units here are decimal (kilo = 1000), matching networking convention. 🔒 In your browser.
How the bandwidth converter works
Network speeds are measured two ways that differ by a factor of eight: bit-rates (bps, Kbps, Mbps, Gbps), which ISPs advertise, and byte-rates (B/s, KB/s, MB/s, GB/s), which download managers display. Since one byte is eight bits, you divide a bit-rate by 8 to get the byte-rate — 100 Mbps equals 12.5 MB/s. The tool works in decimal units (kilo = 1000), the networking convention, and shows every unit at once from whatever you type.
Don't confuse the lowercase "b" (bits) with uppercase "B" (bytes): Mbps is megabits per second, MB/s is megabytes per second, and they differ 8×. Networking uses decimal prefixes (1 Kbps = 1000 bps); storage sometimes uses binary ones (1 KiB = 1024 B), which is a separate distinction.
Frequently asked questions
How do I convert Mbps to MB/s?
Divide by 8. Megabits per second ÷ 8 = megabytes per second, because a byte is 8 bits. So 100 Mbps = 12.5 MB/s, and 1 Gbps = 125 MB/s.
What is the difference between Mbps and MB/s?
Mbps is megabits per second (lowercase b, used for connection speed); MB/s is megabytes per second (uppercase B, used for file transfer rate). They differ by a factor of 8, so 80 Mbps is only 10 MB/s.
Why do ISPs advertise speed in megabits?
Partly convention from telecoms, and partly because the bit is the fundamental unit of data transmission — and the bigger-sounding number (100 Mbps vs 12.5 MB/s) markets better. Your download manager then reports bytes, which is why the on-screen rate looks eight times smaller.
Are these decimal or binary units?
Decimal — 1 Kbps = 1000 bps, 1 Mbps = 1,000,000 bps, matching networking standards. Binary units (1024-based, like KiB) are mainly used for memory and storage sizes, not transmission speed.
How fast is 1 Gbps in MB/s?
125 MB/s (1,000,000,000 bits ÷ 8 = 125,000,000 bytes). In practice you'll see less because of overhead and the limits of drives, Wi-Fi and the server on the other end.