Your internet provider advertises speed in Megabits per second (Mbps). Your downloads show Megabytes per second (MB/s). This tool bridges the gap — instantly and accurately.
Enter your internet speed in Mbps. The converter divides by 8 and shows your real download rate in MB/s.
Watch data packets flow through the bandwidth pipe in real-time. This diagram syncs with the converter above.
The relationship between Mbps and MB/s comes down to one fact: there are 8 bits in every byte.
Since 1 byte contains 8 bits, divide any Megabit-per-second value by 8 to get Megabytes per second.
A 100 Mbps connection downloads files at 12.5 Megabytes per second. That's a 1 GB file in about 80 seconds.
Each byte is made up of 8 bits. That's why Mbps numbers are always 8× larger than MB/s.
Quick reference chart for common internet speeds. The bars show relative download rates.
They sound similar but measure different things. Here's what sets them apart.
Mbps stands for Megabits per second. It measures data transfer rate — how fast data moves across a network. ISPs use Mbps to advertise internet connection speeds. One Megabit equals 1,000,000 bits (using the decimal SI convention, IEC 80000-13).
Megabytes per second measures file transfer speed — how quickly files move to or from your device. Your browser, OS, and download managers report speeds in MB/s. One Megabyte equals 8 Megabits. Binary convention uses MiB/s (Mebibytes, IEC 60027-2).
Knowing your real download speed matters for everyday tasks.
Your ISP says "100 Mbps" but your downloads show 12.5 MB/s. Both numbers are correct — they just use different units. Mbps measures the line rate in bits; MB/s shows actual file transfer speed in bytes.
Because bits are smaller than bytes. There are 8 bits in a byte, so the Mbps number is always 8 times larger. ISPs prefer Mbps because the bigger number looks more impressive on marketing materials.
When you transfer a 500 MB file at 100 Mbps, it takes about 40 seconds. Knowing MB/s lets you estimate how long any download or upload will take without guesswork.
Netflix 4K needs ~25 Mbps (3.125 MB/s). If your connection is 50 Mbps, you have 25 Mbps left for other devices. Converting helps you plan bandwidth across all your streaming and browsing needs.
See how long common files take to download at your speed.
Explore all our specialized Mbps converters — each with its own unique calculator, formula, and reference table.
Answers to common questions about Mbps, MB/s, and data transfer units.
1 Mbps equals 0.125 MB/s. Since there are 8 bits in a byte, divide 1 by 8 to get 0.125. So a 1 Mbps connection transfers data at one-eighth of a Megabyte each second.
No. Mbps means Megabits per second (lowercase 'b' for bits). MB/s means Megabytes per second (uppercase 'B' for bytes). 1 MB/s = 8 Mbps. They measure the same thing — data transfer rate — but in different units.
It depends on usage. 25 Mbps (3.125 MB/s) works for HD streaming and basic browsing. 100 Mbps (12.5 MB/s) handles 4K video and multi-device homes. 300+ Mbps suits heavy downloading, gaming, and large households.
Steam shows download speeds in MB/s by default. If you see Mbps instead, go to Steam → Settings → Downloads and check "Display download rates in bits per second" to toggle between the two. The actual download speed stays the same — only the display unit changes.
100 Mbps equals 12.5 MB/s. That means at full speed, you download 12.5 Megabytes every second, or about 750 MB per minute, or roughly 44 GB per hour.
Mb = Megabits (lowercase 'b'). MB = Megabytes (uppercase 'B'). 1 MB = 8 Mb. Internet speeds use Mb (bits), file sizes use MB (bytes). The capitalization matters — always check the case of the 'b'.