Live Calculator

Mbps to MB/s Converter

Turn your internet plan's megabits per second into the megabytes per second your downloads actually show — in real time.

Decimals:

Standard:

1 MB = 1,000,000 bytes · MB/s = Mbps ÷ 8

Internet speed (Mbps)

Mbps

The number on your internet plan or speed test result.

Download speed (MB/s)

MB/s

The number your browser, Steam, or download manager shows.

Try a plan:

How Many MB/s Is 1 Mbps?

1 Mbps equals 0.125 MB/s. To convert Mbps to MB/s, divide by 8 — so a 100 Mbps internet plan downloads at a maximum of 12.5 MB/s.

MB/s = Mbps ÷ 8 · Mbps = MB/s × 8

The two units describe the same data stream at different granularity. Mbps counts individual bits — the convention used by internet providers, speed tests, and all networking equipment. MB/s counts bytes — groups of 8 bits — which is how files are measured, so browsers, Steam, and download managers report in it. Neither number is wrong; the byte number is simply 8× smaller because each of its units is 8× bigger.

The ÷8 Rule, Visualized

Your plan: 100 Mbpsbits per second

same speed, different unit — ÷ 8

Your download: 12.5 MB/sbytes per second

The bars represent the same physical speed. The MB/s bar looks 8× shorter only because each megabyte is 8× larger than a megabit.

Common Internet Plans in MB/s

Every popular plan speed converted — with what it means for real downloads. All values use decimal (SI) units; real-world speeds run 5–15% lower due to overhead.

25 Mbps = 3.125 MB/s

Downloads per minute: 187.5 MB
5 GB file: ≈ 27 min
Entry plans; conservative allowance for one 4K stream

50 Mbps = 6.25 MB/s

Downloads per minute: 375 MB
5 GB file: ≈ 13 min
Comfortable for small households

100 Mbps = 12.5 MB/s

Downloads per minute: 750 MB
5 GB file: ≈ 7 min
The most common plan speed worldwide — see our full 100 Mbps verdict

200 Mbps = 25 MB/s

Downloads per minute: 1.5 GB
5 GB file: ≈ 3.5 min
Multi-user households, frequent downloads

300 Mbps = 37.5 MB/s

Downloads per minute: 2.25 GB
5 GB file: ≈ 2.2 min
Fiber mid-tier; heavy streaming + gaming

500 Mbps = 62.5 MB/s

Downloads per minute: 3.75 GB
5 GB file: ≈ 80 sec
Power users and large families

900 Mbps = 112.5 MB/s

Downloads per minute: 6.75 GB
5 GB file: ≈ 45 sec
Common "gigabit" real-world provisioning

1000 Mbps = 125 MB/s

Downloads per minute: 7.5 GB
5 GB file: ≈ 40 sec
Full gigabit fiber — see the Gbps converter for multi-gig tiers

Mbps to MB/s Conversion Table

Formula: MB/s = Mbps ÷ 8

Mbps to MB/s

Mbps	MB/s	MiB/s
1 Mbps	0.125 MB/s	0.119 MiB/s
5 Mbps	0.625 MB/s	0.596 MiB/s
10 Mbps	1.25 MB/s	1.19 MiB/s
25 Mbps	3.125 MB/s	2.98 MiB/s
50 Mbps	6.25 MB/s	5.96 MiB/s
100 Mbps	12.5 MB/s	11.92 MiB/s
200 Mbps	25 MB/s	23.84 MiB/s
300 Mbps	37.5 MB/s	35.76 MiB/s
500 Mbps	62.5 MB/s	59.60 MiB/s
1,000 Mbps	125 MB/s	119.21 MiB/s

Have MB/s and need the internet speed?

Use the reverse calculator when the value you have comes from a download app. It converts B/s, KB/s, MB/s and GB/s to Mbps and lets you distinguish decimal MB/s from binary MiB/s.

Convert MB/s to Mbps →

MiB/s values use the binary (IEC) standard: 1 MiB = 1,048,576 bytes. Windows and some apps display MiB/s but label it "MB/s" — see the section below.

How to Convert Mbps to MB/s

To convert megabits per second to megabytes per second, divide the Mbps value by 8. That's the whole conversion — because 1 byte = 8 bits by definition, and both units use the same decimal "mega" prefix (1,000,000).

Step-by-Step Example

1 Take your plan speed: 300 Mbps

2 Divide by 8: 300 ÷ 8 = 37.5 MB/s

3 Sanity-check against reality: expect sustained downloads of ~33–36 MB/s after 5–15% overhead

Formula Summary

Mbps to MB/s

MB/s = Mbps ÷ 8

Starting with MB/s?

Use the KiB/s and MiB/s to Mbps converter →

Mbps to MiB/s (binary)

MiB/s = Mbps ÷ 8.388608

Mbps to GB per hour

GB/h = Mbps × 0.45

What Your Plan Really Delivers

Drag the slider to any plan speed and see the download rates that matter.

Plan speed: 100 Mbps

12.5

MB/s download

750 MB

per minute

45 GB

per hour

≈ 100 min

75 GB game

Theoretical maximums at the selected speed — real downloads run 5–15% lower due to protocol overhead.

MB/s vs MiB/s: Why Windows Makes Your Downloads Look Slower

There's a subtle trap in this conversion (beyond the Mbps vs MBps capitalization trap itself). The official decimal megabyte (MB) is 1,000,000 bytes, but many applications — including Windows file dialogs and some download tools — count in binary mebibytes (MiB = 1,048,576 bytes) while still printing "MB". The difference is about 4.9%.

100 Mbps in decimal (SI)

12.5 MB/s

What the math says, and what ISPs and speed tests mean.

100 Mbps in binary (IEC)

11.92 MiB/s

What a MiB-counting app displays — same speed, smaller-looking number.

So if your 100 Mbps connection "only" shows 11.9 in a download tool, nothing is wrong — the tool is counting in binary units. Flip the calculator above to MiB/s (IEC) to match what your app displays, or read our calculation methodology for the exact factors we use.

Why Two Units Exist at All

Telecommunications has measured transmission in bits per second since the telegraph era — a wire carries one bit at a time, so bits are the natural unit for a data stream. Computer storage grew up separately around the byte, because one byte encodes one character, making it the natural unit for files.

Your internet connection sits exactly at the boundary: the network side (your ISP, router, and speed test) speaks bits, while the file side (your browser, OS, and downloads) speaks bytes. The confusion isn't a scam — but ISPs certainly don't mind that "100 Mbps" reads as a bigger number than "12.5 MB/s".

The takeaway: any time a speed looks 8× too slow, check the unit before blaming your provider. If it looks ~5% too slow on top of that, check for MiB labeling — and if it's more than ~15% below the converted number on a wired connection, that's when something is actually wrong.

Frequently Asked Questions

Quick answers about Mbps and MB/s

Is 100 Mbps the same as 100 MB/s?

No. 100 Mbps equals 12.5 MB/s, because a megabit is 8 times smaller than a megabyte. Mbps (megabits per second) measures your connection in bits; MB/s (megabytes per second) measures file transfer in bytes. A true 100 MB/s connection would be an 800 Mbps plan.

How many MB/s is 100 Mbps?

100 Mbps = 12.5 MB/s. Divide any Mbps value by 8 to get MB/s: 100 ÷ 8 = 12.5. In practice you will see slightly less (about 11–12 MB/s) due to protocol overhead.

How many MB/s is 300 Mbps?

300 Mbps = 37.5 MB/s (300 ÷ 8 = 37.5). At that rate you download about 2.25 GB per minute — a 75 GB game in roughly 27 minutes under ideal conditions.

Why do ISPs advertise in Mbps instead of MB/s?

Two reasons. Historically, telecommunications has always measured transmission in bits per second, so networking kept the convention. Practically, the bit number is 8× bigger — "100 Mbps" sounds more impressive than "12.5 MB/s" on marketing material, even though they are identical speeds.

Is 12.5 MB/s a good download speed?

Yes for most uses. 12.5 MB/s (a 100 Mbps plan) supports four simultaneous 4K streams and downloads a 5 GB file in about 7 minutes. Heavy downloaders — for example 75+ GB games — benefit from faster plans: at 62.5 MB/s (500 Mbps) the same game takes about 20 minutes.

Why does Steam show MB/s while my plan says Mbps?

Steam measures actual file data written to your disk, which is counted in bytes, so it reports MB/s. Multiply the Steam number by 8 to compare with your plan: 12.5 MB/s in Steam = 100 Mbps of bandwidth being used.

What is the difference between MB/s and MiB/s?

MB/s uses decimal megabytes (1 MB = 1,000,000 bytes); MiB/s uses binary mebibytes (1 MiB = 1,048,576 bytes). 100 Mbps = 12.5 MB/s but only 11.92 MiB/s. Some applications label MiB/s as "MB/s", which makes downloads look about 5% slower than they are. Our calculator supports both — use the SI/IEC toggle.

Why is my real download speed lower than Mbps ÷ 8?

The ÷8 conversion gives the theoretical maximum. Real downloads lose 5–15% to TCP/IP protocol overhead, Wi-Fi signal loss, server-side limits, and network congestion. On a 100 Mbps plan, sustained downloads of 11–12 MB/s over ethernet are normal and healthy.