Mbps ↔ MB/s
Mbps to MB/s Calculator
Convert internet speed from Mbps to MB/s instantly — and finally see the real download speed behind your plan.
MB/s = Mbps ÷ 8- 100% free
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Mbps to MB/s converter
Type a value — the result updates live. No submit button.
Real download speed
Converting Mbps → MB/s
Per hour at full speed
225 GB
- Accurate to the standard bits-to-bytes conversion (1 byte = 8 bits)
- No login required — 100% free
- Your data never leaves your browser
How the conversion is calculated
To convert Mbps to MB/s, divide the speed in megabits per second by 8, because one byte contains eight bits. For example, 500 Mbps ÷ 8 = 62.5 MB/s. To go the other way, multiply MB/s by 8. The factor is fixed and never changes with your provider, hardware or country.
The formula
MB/s = Mbps ÷ 8Mbps = MB/s × 8Why your real speed is a little lower
The result above is the theoretical maximum. In practice, protocol overhead (TCP/IP and TLS headers), server-side limits, Wi-Fi interference and bandwidth shared with other devices usually cost you 10-20%. A 500 Mbps plan that converts to 62.5 MB/s realistically peaks around 50-58 MB/s in a game launcher.
Why your 500 Mbps plan is not 500 MB/s
Internet providers advertise speed in megabits per second (Mbps). Your computer, your browser and every game launcher report file transfers in megabytes per second (MB/s). Those are two different units, and the gap between them is exactly eight times.
That single factor is why a 500 Mbps fibre plan downloads at roughly 62.5 MB/s in Steam, not 500 MB/s. Nothing is broken and nobody is throttling you — a byte is simply made of 8 bits, so every speed in Mbps has to be divided by 8 before it can be compared with a file size in megabytes.
This Mbps to MB/s calculator does that conversion in both directions the moment you type, so you can compare an ISP quote, a speed-test result and a download manager reading in the same unit.
Why use this converter
Why use this converter
Four reasons it beats doing the maths in your head.
Instant, as you type
No submit button and no page reload. Every keystroke recalculates the result immediately, so you can compare plans in seconds.
Both directions
Go from Mbps to MB/s to check a download, or from MB/s back to Mbps to see what line speed a transfer really implies.
Exact, standards-based maths
We use the one correct factor — 1 byte = 8 bits — with no rounding tricks, and we show you the formula so you can verify it yourself.
Private and free
The calculation runs entirely in your browser. Nothing is uploaded, nothing is stored, and there is no account to create.
How to use the Mbps to MB/s calculator
Three steps, about ten seconds.
Enter your advertised speed
Type the number your ISP quotes on your bill or the figure a speed test reports — for example 500 for a 500 Mbps plan.
Read your real MB/s
The converter divides by 8 and shows the megabytes-per-second figure your browser, Steam or Epic Games will display during a download.
Flip it if you need the reverse
Tap the swap button to convert MB/s back to Mbps — useful when a download manager shows 12 MB/s and you want to know which plan that matches.
Real-world examples
The three plans people ask about most.
100 Mbps plan
downloads at about
12.5MB/s
500 Mbps plan
downloads at about
62.5MB/s
1,200 Mbps plan
downloads at about
150MB/s
Mbps to MB/s conversion chart
Every common consumer tier, converted. Bookmark this table — the factor never changes.
| Advertised speed | Real download speed | 1 GB file takes |
|---|---|---|
| 10 Mbps | 1.25 MB/s | 13 min 20 s |
| 25 Mbps | 3.13 MB/s | 5 min 20 s |
| 50 Mbps | 6.25 MB/s | 2 min 40 s |
| 100 Mbps | 12.5 MB/s | 1 min 20 s |
| 200 Mbps | 25 MB/s | 40 s |
| 300 Mbps | 37.5 MB/s | 26 s |
| 400 Mbps | 50 MB/s | 20 s |
| 450 Mbps | 56.25 MB/s | 17 s |
| 480 Mbps | 60 MB/s | 16 s |
| 500 Mbps | 62.5 MB/s | 16 s |
| 600 Mbps | 75 MB/s | 13 s |
| 650 Mbps | 81.25 MB/s | 12 s |
| 940 Mbps | 117.5 MB/s | 8.5 s |
| 1,000 Mbps | 125 MB/s | 8 s |
| 1,200 Mbps | 150 MB/s | 6.7 s |
| 2,000 Mbps | 250 MB/s | 4 s |
Theoretical maximums at 100% line efficiency. Real transfers typically land 10-20% lower.
Bits vs bytes, explained properly
Nearly all the confusion in this topic comes from one letter of capitalisation. Here is the whole rule set.
- bit (lowercase b)
- The smallest unit of digital data — a single 1 or 0. Network speeds are measured in bits: Mbps means megabits per second.
- Byte (uppercase B)
- A group of 8 bits. File sizes are measured in bytes: a 100 MB file is 100 megabytes, which is 800 megabits of data.
- Mbps
- Megabits per second. The unit ISPs advertise and speed tests report. Sometimes written Mb/s or Mbit/s — all the same thing.
- MB/s
- Megabytes per second. The unit Windows, macOS, browsers, Steam and the Epic Games Launcher use for transfer progress. Also written MBps.
Why do ISPs use Mbps instead of MB/s?
Partly history and partly marketing. Networking hardware has always been rated in bits per second, so the industry standard genuinely is Mbps. But it also produces a number eight times larger — '1000 Mbps' sells better on a billboard than '125 MB/s', even though they describe the identical connection.
Why does my computer show MB/s?
Operating systems care about files, and files are measured in bytes. Showing a download in MB/s lets you compare it directly against the size of the thing you are downloading, which is the number that actually answers 'how much longer?'.
From speed to actual waiting time
Converting Mbps to MB/s tells you how fast data arrives. It does not tell you how long a specific file will take — for that you also need the file size. Divide the size in megabytes by the speed in MB/s and you have your answer in seconds. Our companion tool does both steps for you.
Who uses this calculator
Gamers checking launcher speeds
Steam shows 58 MB/s while your plan says 500 Mbps. Converting proves you are getting roughly what you pay for — or that something really is wrong.
People comparing ISP plans
Two providers, two marketing numbers. Convert both to MB/s and the practical difference between a 300 and a 500 Mbps plan becomes obvious.
Remote workers moving large files
Upload a 4 GB video to a client before a deadline? Convert your upload Mbps to MB/s first and you will know whether to start it now or overnight.
IT support and network admins
Half of all 'the internet is slow' tickets are a unit misunderstanding. A shared conversion link settles it in one message.
Frequently asked questions
Short, direct answers to the questions people search for most.
There are 8 megabits in one megabyte, so 8 Mbps of speed delivers 1 MB of data every second. To convert a connection speed, divide the Mbps figure by 8: a 24 Mbps line moves 3 MB per second.
Divide the speed in Mbps by 8. That is the whole conversion, because one byte is made of eight bits. For example, 400 Mbps ÷ 8 = 50 MB/s, and 100 Mbps ÷ 8 = 12.5 MB/s.
Use MB/s = Mbps ÷ 8. Take the megabits-per-second number your provider advertises, divide it by eight, and the result is megabytes per second — the same unit your browser and game launcher display.
Multiply the MB/s figure by 8. It is the exact reverse of the Mbps-to-MB/s conversion, so a download running at 12 MB/s is using 96 Mbps of your line, and 62.5 MB/s equals 500 Mbps.
Multiply the Mbps value by 0.125, which is the same as dividing by 8. For example, 480 × 0.125 = 60 MB/s. Use whichever operation you find easier — both give an identical result.
1200 Mbps equals 150 MB/s, which is very fast — a 1 GB file downloads in about 7 seconds. At that tier your Wi-Fi, your disk or the remote server will usually limit you before your connection does.
A lowercase b means bits and an uppercase B means bytes, and one byte is eight bits. Mbps (megabits per second) is how connections are sold; MBps or MB/s (megabytes per second) is how file transfers are displayed. MBps is always the larger-sounding speed divided by eight.
Because a byte is defined as exactly eight bits, not ten. The factor comes from computer architecture, not from the decimal system, so it never changes regardless of provider, country or hardware.
You cannot — Steam has no unit toggle and always reports download speed in MB/s, following the operating system's convention. To compare it with your ISP's Mbps figure, divide your plan speed by 8: a 500 Mbps plan should show roughly 62.5 MB/s in Steam.
The Epic Games Launcher already shows MB/s and offers no setting to switch it to Mbps. If your plan is advertised in Mbps, divide by 8 to get the MB/s figure the launcher should be reaching.
First check the units — a 500 Mbps plan correctly downloads at about 62.5 MB/s, not 500 MB/s. If the converted figure still does not match, the usual causes are Wi-Fi loss, an overloaded source server, or other devices using bandwidth.
Private by design
This calculator is pure client-side JavaScript. The numbers you type are processed by your own browser and are never transmitted to us, logged, or stored anywhere. There is no account, no tracking of your inputs, and the whole site is served over HTTPS.
- No server round-trip — the maths happens on your device
- No login, no email, no personal data collected
- HTTPS everywhere, no mixed content
Last updated: Methodology & accuracy
See your real download speed
Stop guessing what your internet plan actually delivers. Convert your Mbps figure to MB/s, then find out exactly how long that next 50 GB game update is going to take.