📶 Data rates
Mbps to MB/s Converter
Enter a connection speed in Mbps and press Convert to get MB/s. 100 Mbps is 12.5 MB/s, because a byte is 8 bits.
About the Mbps to MB/s Converter
Broadband is sold in megabits per second and download software reports megabytes per second, so every speed looks eight times slower than the plan. A 100 Mbps line really does deliver 12.5 MB/s, and a 1 Gbps line 125 MB/s.
There is a second, smaller gap from the decimal-versus-binary distinction, but it is the factor of eight that confuses people. If a download takes twice as long as expected, check whether the file size is in MB or the speed in Mbps before blaming the provider.
How the calculation works
- MB/s = Mbps ÷ 8
- Mbps = MB/s × 8
- 1 Gbps = 1,000 Mbps = 125 MB/s
Reference values
| Plan speed | Download rate | 1 GB file takes |
|---|---|---|
| 10 Mbps | 1.25 MB/s | 13 min |
| 50 Mbps | 6.25 MB/s | 2.7 min |
| 100 Mbps | 12.5 MB/s | 80 s |
| 300 Mbps | 37.5 MB/s | 27 s |
| 500 Mbps | 62.5 MB/s | 16 s |
| 1,000 Mbps | 125 MB/s | 8 s |
Worked examples
- 1 Megabit per second = 0.125 Megabyte per second.
- 2 Megabit per second = 0.25 Megabyte per second.
- 5 Megabit per second = 0.625 Megabyte per second.
- 10 Megabit per second = 1.25 Megabyte per second.
- 50 Megabit per second = 6.25 Megabyte per second.
- 100 Megabit per second = 12.5 Megabyte per second.
Checking the answer
Multiply the Megabit per second figure by 0.125 to get Megabyte per second, and divide by the same number to come back. Twenty-five Megabit per second should land at 3.125 Megabyte per second; an answer near 200 means the division went the wrong way. A quick sanity check is that Megabyte per second 1.25 must always be smaller than the matching Megabit per second figure when the factor is above 1.
Common mistakes
- Reading megabits as megabytes.
- Assuming the plan speed is what a download actually achieves.
- Comparing a Wi-Fi test with a wired one.
Using this conversion
The Megabit per second to Megabyte per second relationship is fixed, so one factor covers every value you will enter: a household quantity and an industrial one behave identically. What changes with size is only how much the rounding matters, which is why the table above stops at a round number rather than at whatever figure you happen to need today.
When precision matters
For a rough Megabit per second to Megabyte per second estimate one decimal place is plenty. For a contract, a shipping document or a lab result, keep the full figure from the converter and round only on the final line, so no intermediate step throws the Megabyte per second total out.
A last check on the numbers: 37 Megabit per second works out to 4.625 Megabyte per second, and reversing that with the same factor brings you back to 37 Megabit per second. Because Megabit per second to Megabyte per second is a single multiplication, any tool that gives a different figure for the same input is rounding somewhere in the middle rather than only at the end.