Mbps to MB/s
Convert megabit/second to megabyte/second instantly — type a value and read the result, with the exact formula shown.
Example
1 Mbps = 0.125 MB/s, 5 Mbps = 0.625 MB/s, 10 Mbps = 1.25 MB/s.
How it works
Megabyte/second = Megabit/second × 0.125. Every value is converted through a single bit/second base unit using internationally defined conversion factors, so any from/to pair stays consistent.
Good to know
Mbps to MB/s conversion answers one of the most common questions in everyday tech: why does a "100 Mbps" internet plan only download a 1 GB file at around 12 megabytes per second? Internet providers, network adapters, and speed-test results almost always advertise throughput in megabits per second (Mbps), while your operating system, browser download manager, and file copies report progress in megabytes per second (MB/s). Knowing the relationship lets you sanity-check whether you are actually getting the speed you pay for.
The split comes from two different professions measuring the same data. Networking and telecom engineers count in bits, the smallest unit a wire or fiber can signal, so line rates are quoted in bits per second. Software and storage instead count in bytes, the 8-bit chunk a computer uses to store a single character. Because one byte equals exactly 8 bits, the lower-case "b" (bit) and upper-case "B" (byte) are not interchangeable, even though they look almost identical.
The rule of thumb is simple: divide megabits by 8 to get megabytes, since 1 Mbps = 0.125 MB/s. For fast mental math, a 100 Mbps connection tops out near 12.5 MB/s, and a gigabit (1000 Mbps) line peaks around 125 MB/s. A quick shortcut is to knock off the last digit and halve what is left — 80 Mbps becomes roughly 10 MB/s.
The classic mistake is forgetting the case of the letter and assuming Mbps and MB/s are the same number, which makes downloads feel "8x slower than promised." A precision caveat worth noting: this converter uses the decimal SI definition where mega means 1,000,000, so it stays consistent with how ISPs advertise speeds. Real-world transfer rates also run a bit below the theoretical maximum because of TCP/IP overhead, protocol headers, and shared-line congestion, so treat the result as a ceiling rather than a guarantee.
Frequently asked questions
How do you convert megabit/second to megabyte/second?
Multiply the number of megabit/seconds by 0.125 to get megabyte/seconds. For example, 1 Mbps = 0.125 MB/s.
What is 1 megabit/second in megabyte/seconds?
1 megabit/second equals 0.125 megabyte/seconds (1 Mbps = 0.125 MB/s).
How many megabit/seconds are in 1 megabyte/second?
There are 8 megabit/seconds in 1 megabyte/second.
Is this converter free and private?
Yes. It runs entirely in your browser, so your inputs never leave your device, there is no sign-up, and it works offline once loaded.
Are the conversions exact?
Conversions use internationally defined factors and are exact where the definitions are exact (for example, 1 inch = 2.54 cm). Displayed results are rounded for readability.
People also ask
How many MB/s is 100 Mbps?
100 Mbps equals 12.5 MB/s, because you divide the megabit figure by 8 (100 × 0.125 = 12.5).
Why is my download speed in MB lower than my Mbps plan?
Your plan is measured in megabits while your download manager shows megabytes, and there are 8 bits in a byte. A 200 Mbps connection therefore peaks at about 25 MB/s, which is correct, not a slowdown.
What is the difference between Mbps and MB/s?
Mbps is megabits per second (lower-case b) and MB/s is megabytes per second (upper-case B). One MB/s equals 8 Mbps, so MB/s is always the larger-looking unit per second of data.
How fast is 1 Gbps in MB/s?
1 Gbps is 1000 Mbps, which converts to 125 MB/s (1000 × 0.125). In practice you will usually see 110 to 118 MB/s after network overhead.
How long to download a 1 GB file on a 50 Mbps connection?
50 Mbps equals 6.25 MB/s, so a 1000 MB (1 GB) file takes roughly 160 seconds, or about 2 minutes and 40 seconds at full speed.
Is 25 Mbps enough for 4K streaming?
Yes. 25 Mbps is 3.125 MB/s, which comfortably covers a single 4K stream that needs around 15 to 25 Mbps, though multiple simultaneous 4K streams would require more.
Do I multiply or divide to go from Mbps to MB/s?
You divide by 8, or equivalently multiply by 0.125. For example, 80 Mbps ÷ 8 = 10 MB/s.
What is 500 Mbps in MB/s?
500 Mbps equals 62.5 MB/s (500 × 0.125 = 62.5).
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