1 megabit per second how many megabytes. What Internet Speed ​​Is Enough? Information units in detail

Today, the Internet is needed in every home no less than water or electricity. And in every city there are tons of companies or small firms that can provide people with access to the Internet.

The user can choose any package for using the Internet from a maximum of 100 Mbit / s to a low speed for example 512 kb / s. How do you choose the right speed and the right internet provider for yourself?

Of course, you need to choose the speed of the Internet based on what you do on the network and how much you are willing to pay per month for Internet access. From my own experience, I want to say that the speed of 15 Mbit / s is quite suitable for me as a person who works on the network. Working on the Internet, I have 2 browsers enabled, and each has 20-30 tabs open, while problems arise more from the computer side (to work with a large number of tabs, you need a lot random access memory and a powerful processor) rather than from the side of the Internet speed. The only moment when you have to wait a little is the moment you first launch the browser, when all the tabs are loaded at the same time, but this usually takes no more than a minute.

1. What do the Internet speed values ​​mean?

Many users confuse the Internet speed values ​​thinking that 15Mb / s is 15 megabytes per second. In fact, 15Mb / s is 15 megabits per second, which is 8 times less than megabytes and at the output we will get about 2 megabytes of download speed for files and pages. If you usually download movies for viewing in the size of 1500 MB, then at a speed of 15 Mbps the movie will be downloaded for 12-13 minutes.

We are watching a lot or a little of your internet speed

  • The speed is 512 kbps 512/8 = 64 kbps (this speed is not enough for watching online video);
  • The speed is 4 Mbit / s 4/8 = 0.5 MB / s or 512 kB / s (this speed is enough for watching online video in quality up to 480p);
  • The speed is 6 Mbit / s 6/8 = 0.75 MB / s (this speed is enough to watch online videos in quality up to 720p);
  • The speed is 16 Mbit / s 16/8 = 2 MB / s (this speed is enough to watch online video in quality up to 2K);
  • The speed is 30 Mbit / s 30/8 = 3.75 MB / s (this speed is enough to watch online video in quality up to 4K);
  • The speed is 60 Mbit / s 60/8 = 7.5 MB / s (this speed is enough to watch online videos in any quality);
  • The speed is 70 Mbit / s 60/8 = 8.75 MB / s (this speed is enough to watch online videos in any quality);
  • The speed is 100 Mbit / s 100/8 = 12.5 MB / s (this speed is enough to watch online videos in any quality).

Many people connecting to the Internet worry about the possibility of watching online video, let's see what kind of traffic is needed for films with different quality.

2. Internet speed required to watch online videos

And here you will find out a lot or a little of your speed for watching online videos with different quality formats.

Broadcast type Video bitrate Audio bitrate (stereo) Traffic Mb / s (megabytes per second)
Ultra HD 4K 25-40 Mbps 384 kbps from 2.6
1440p (2K) 10 Mbps 384 kbps 1,2935
1080p 8000 kbps 384 kbps 1,0435
720p 5000 kbps 384 kbps 0,6685
480p 2500 kbps 128 kbps 0,3285
360p 1000 kbps 128 kbps 0,141

We see that all the most popular formats are reproduced without problems at an Internet speed of 15 Mbps. But to watch video in 2160p (4K) format, you need at least 50-60 Mbps. but there is one BUT. I don't think that many servers will be able to distribute video of this quality while maintaining such a speed, so having connected the Internet at 100 Mbps, you can never watch online video in 4K.

3. Internet speed for online games

By connecting home Internet, every gamer wants to be 100% sure that his Internet speed will be sufficient to play his favorite game. But as it turns out, online games are not at all demanding on the speed of the Internet. Consider the speed required by popular online games:

  1. DOTA 2 - 512 kbps
  2. World of Warcraft - 512 kbps
  3. GTA online - 512 kbps
  4. World of Tanks (WoT) - 256-512 kbps.
  5. Panzar - 512 kbps
  6. Counter Strike - 256-512 kbps

Important! The quality of your online game is no longer dependent on the speed of the Internet, but on the quality of the channel itself. For example, if you (or your provider) get the Internet via satellite, then whatever package you use, the ping in the game will be much higher than that of a wired channel with a lower speed.

4. What is the Internet for more than 30 Mbps.

In exceptional cases, I might recommend using a faster connection of 50 Mbps or more. Not many will be able to provide such speed in full, the Internet to Home company is not the first year in this market and quite instills confidence, the more important is the stability of communication, and I want to believe that they are at their best here. A high speed Internet connection may be necessary when working with large amounts of data (downloading and uploading them from the network). Perhaps you are a fan of watching movies in excellent quality, or you download large-volume games every day, or upload large-volume video or work files to the Internet. To check the communication speed, you can use various online services, but to optimize the work, you need to do.

By the way, the speed of 3 Mbps and below usually makes working on the network a little unpleasant, not all sites with online video work well, and downloading files is generally not happy.

Anyway, there is plenty to choose from on the Internet services market today. Sometimes, in addition to global providers, the Internet is offered by small-town firms, and often the level of their service is also at a height. The cost of services in such firms is, of course, much lower than that of large companies, but as a rule, the coverage of such firms is very insignificant, usually within a region or two.

In today's article, we will focus on measuring information. All pictures, sounds and video clips that we see on the screens of monitors are nothing more than numbers. And these numbers can be measured, and, now, you will learn how to convert megabits to megabytes and megabytes to gigabytes.

If it is important for you to know how much 1 GB is in or how much is 1 MB, then this article is for you. Most often, such data is needed by programmers who estimate the volume occupied by their programs, but sometimes it does not bother ordinary users to estimate the size of downloaded or stored data.

In short, it is enough to know this:

1 byte = 8 bits

1 kilobyte = 1024 bytes

1 megabyte = 1024 kilobytes

1 gigabyte = 1024 megabytes

1 terabyte = 1024 gigabytes

Common abbreviations: kilobyte = kb, megabyte = mb, gigabyte = gb.

Recently I got a question from my reader: "What is more kb or mb?" Hopefully now everyone knows the answer.

Information units in detail

In the information world, not the decimal measurement system, which is familiar to us, is used, but the binary one. This means that one digit can take on a value not from 0 to 9, but from 0 to 1.

The simplest unit of information measurement is 1 bit, it can be 0 or 1. But this value is very small for the modern amount of data, therefore, bits are rarely used. More often, bytes are used, 1 byte is equal to 8 bits and can take a value from 0 to 15 (hexadecimal number system). True, instead of numbers 10-15, letters from A to F are used.

But even these amounts of data are not large, therefore, the usual prefixes kilo- (thousand), mega- (million), giga- (billion) are used.

It is worth noting that in the infoworld, a kilobyte is not 1000 bytes, but 1024. And if you want to know how many kilobytes are in a megabyte, you will also get the number 1024. When asked how many megabytes are in a gigabyte, you will hear the same answer - 1024.

This is also determined by a feature of the binary number system. If, when using tens, we get each new digit by multiplying by 10 (1, 10, 100, 1000, etc.), then in the binary system a new digit appears after multiplying by 2.

It looks like this:

2, 4, 8, 16, 32, 64, 128, 256, 512, 1024

A 10-digit binary number can only have 1024 values. This is more than 1000, but it is closest to the usual kilo prefix. Mega and giga and tera are used in the same way.

User question

Hello.

Please tell me, I have an Internet channel of 15/30 Megabits / s, files in uTorrent are downloaded at a speed of (approximately) 2-3 MB / s. How can you compare the speed, is the ISP cheating on me? How many megabytes should be at a speed of 30 megabits / s? Confused about the values ​​...

Good day!

This question is very popular, people ask it in different interpretations (sometimes, very menacingly, as if someone had deceived someone). The bottom line is that most users confuse different units : both grams and pounds (also Megabits and Megabytes).

In general, to solve this problem, you will have to resort to a little excursion to the computer science course, but I will try not to be boring 👌. Also, in the article, along the way, I will analyze all the questions regarding this topic (about the speed in torrent clients, about MB / s and Mbps).

👉 Note

Educational program on internet speed

And so, with ANY Internet provider(at least, personally, I have not seen others) the speed of the Internet connection is indicated in Megabits / s (moreover, pay attention to the prefix "BEFORE"- no one gives a guarantee that your speed will always be constant, because it's impossible).

In any torrent program(in the same uTorrent), by default, the download speed is displayed in MB / s(Megabyte per second). That is, I am leading to the fact that Megabytes and Megabits are different values.

👉Usually, sufficiently declared speed in the tariff of your ISP in Mbit / s, divide by 8 to get the speed that uTorrent (or its analogs) will show you in Mbytes / s (but see more about this below, there are nuances).

For example, the rate of the Internet provider, which was asked the question, is 15 Mbps. Let's try to translate it into a normal way ...

👉 Important! (from the computer science course)

The computer does not understand numbers, for it only two values ​​are important: there is a signal or no signal (i.e. " 0 " or " 1 These are either yes or no - that is, "0" or "1" is called " Bit"(the minimum unit of information).

In order to be able to write some letter or number, one unit or zero will obviously not be enough (it will definitely not be enough for the entire alphabet). It was calculated to encode all the necessary letters, numbers, etc. - a sequence of 8 Bit.

For example, this is what the code for the English capital "A" looks like - 01000001.

And so the code for the number "1" is 00110001.

These ones 8 Bits = 1 Byte(i.e. 1 Byte is the smallest data item).

About prefixes (and derivatives):

  • 1 Kilobyte = 1024 Bytes (well, or 8 * 1024 Bits)
  • 1 Megabyte = 1024 Kilobytes (or KB / KB)
  • 1 Gigabyte = 1024 Megabytes (or MB / MB)
  • 1 Terabyte = 1024 Gigabytes (or GB / GB)

Maths:

  1. One Megabit equals 0.125 Megabytes.
  2. To achieve a transfer rate of 1 Megabyte per second, you will need to connect to the network at a speed of 8 Megabits per second.

In practice, as a rule, they do not resort to such calculations, everything is made easier. The declared speed of 15 Mbit / s is simply divided by 8 (and ~ 5-7% is taken from this number for the transfer of service information, network load, etc.). The resulting number will be considered normal speed (an approximate calculation is shown below).

15 Mbps / 8 = 1.875 MB / s

1.875 MB / s * 0.95 = 1.78 MB / s

In addition, I would not discount the load on the ISP's network during peak hours: in the evenings or on weekends (when a large number of people use the network). It can also seriously affect access speed.

Thus, if you are connected to the Internet at a rate 15 Mbps, and your download speed in the torrent program shows about 2 MB / s- everything is very good with your channel and Internet provider 👌. Usually, the speed is less than the declared one (about this my next question, a couple of lines below).

👉 Sample question.

Why is the connection speed 50-100 Mbps and the download speed is very slow: 1-2 Mb / s? Is the ISP to blame? Indeed, even according to rough estimates, it should be at least 5-6 MB / s ...

I'll try to make it out point by point:

  1. firstly, if you carefully look at the agreement with the Internet provider, you will notice that you were promised access speed "UP TO 100 Mbit / s" ;
  2. secondly, in addition to your access speed, it is very important that where are you downloading the file (s) from... For example, if the computer (from which you are downloading the file) is connected via low-speed access, say 8 Mbit / s, then your download speed of 1 MB / s from it is, in fact, the maximum! Those. try downloading the file from other servers (torrent trackers) first;
  3. thirdly, perhaps you already have some kind of the program downloads something else... Yes, the same Windows can download updates (if, in addition to a PC, you have a laptop, smartphone, etc. devices connected to the same network channel - look what they are doing ...). In general, check with what;
  4. it is possible that in the evening (when the load on the Internet provider increases) there are "drawdowns" (you are not alone at this time decided to download something interesting ✌);
  5. if you are connected via a router, check it too. It often happens that inexpensive models cut the speed (sometimes they just reboot), in general, they simply cannot cope with the load ...
  6. check driver for your network card(for example, on the same Wi-Fi adapter). I ran into the situation several times: after to the network card (90% of the drivers for the network adapter are installed by Windows itself during its installation), the access speed increased significantly! The default drivers that come with Windows are not a panacea ...

Nevertheless, I do not exclude the possibility that your Internet provider (with old equipment, clearly inflated tariffs, which are only theoretically available on paper) may be the culprit for the low speed of access. Just, for starters, I wanted to pay attention to the above points ...

👉 Another sample question

Why then indicate the connection speed in Mbit / s, when all users are guided by MB / s (and in programs it is indicated in MB / s)?

There are two points:

  1. when transferring information, not only the file itself is transmitted, but also other service information (some of which is less than a byte). Therefore, it is logical (and in general, historically it happened so) that the connection speed is measured and indicated in Mbit / s.
  2. the higher the number, the stronger the advertisement! Marketing has not been canceled either. Many people, they are far enough from network technologies, and seeing that somewhere the figure is higher, they will go there and connect to the network.

Personally my opinion: for example, it would be nice if providers indicated next to Mbps real speed download data, which the user will see in the same uTorrent. Thus, the wolves are fed and the sheep are safe 👌.

👉To help!

By the way, I recommend it to everyone who is dissatisfied with their speed of access to the Internet.

The terms denoting the speed of the Internet are extremely difficult to understand for a person who is far from this topic. For example, a provider offers a service for providing the Internet at a speed of 1 Mbps, and you do not know whether this is a lot or a little. Let's figure out what it is - mbps, and how the speed of the Internet connection is generally measured.

Explanation of the abbreviation

"mbps" ( mbit per second) - megabits per second. It is in these units that the connection speed is most often measured. All providers in their advertisements indicate the speed in megabits per second, so we should deal with these values.

How much is 1 mbps?

To begin with, note that 1 bit is the smallest unit for measuring the amount of information. Along with a bit, people often use a byte, forgetting that the two concepts are completely different. Sometimes they say "byte" to mean "bit" and vice versa. Therefore, it is worth considering this issue in more detail.

So 1 bit is the smallest unit of measure. 8 bits equals one byte, 16 bits equals two bytes, etc. That is, you just need to remember that a byte is always 8 times larger than a bit.

Given that both units are very small, the prefixes "mega", "kilo" and "giga" are used for them in most cases. What these prefixes mean, you should know from the school course. But if you forgot, then it's worth recalling:

  1. "Kilo" is multiplication by 1000. 1 kilobit is equal to 1000 bits, 1 kilobyte is equal to 1024 bytes.
  2. "Mega" is multiplied by 1,000,000. 1 megabit is equal to 1,000 kilobits (or 1,000,000 bits), 1 megabyte is equal to 1,024 kilobytes.
  3. "Giga" is multiplication by 1,000,000,000. It is equal to 1,000 megabits (or 1,000,000,000 bits), 1 gigabyte is equal to 1024 megabytes.

In simple terms, the connection speed is the speed of information sent and received by the computer in one unit of time (per second). If your internet connection speed is 1 mbps, what does it mean? In this case, it means that your Internet speed is 1 megabits per second or 1,000 kilobits / second.

How much is it

Many users assume that mbps is a lot. In fact, this is not the case. Modern networks are so advanced that, given their capabilities, 1 mbps is nothing at all. Let's give a calculation of this speed using the example of downloading files from the Internet.

We take into account that mbps is megabits per second. Divide 1 by 8 to get megabytes. Total 1/8 = 0.125 megabytes / second. If we want to download music from the Internet, then provided that one track "weighs" 3 megabytes (usually the tracks weigh that much), we can download it in 24 seconds. It's easy to calculate: 3 megabytes (the weight of one track) must be divided by 0.125 megabytes / second (our speed). The result is 24 seconds.

But this only applies to an ordinary song. What if you want to download some 1.5 GB movie? Let's count:

  • 1500 (megabytes): 0.125 (megabytes per second) = 12,000 (seconds).

We translate seconds into minutes:

  • 12,000: 60 = 200 minutes or 3.33 hours.

Thus, with an Internet speed of 1 mbps, we can download a 1.5 GB movie in 3.33 hours. Here you can judge for yourself whether it is long or not.

Considering the fact that Internet providers in large cities offer Internet speeds of up to 100 mbps, we would be able to download a movie with the same volume in just 2 minutes, not 200. That is, 100 times faster. If we start from this, then we can come to the conclusion that mbps is a low speed.

However, everything is relative. In some remote village, where it is generally difficult to catch even a GSM network, having the Internet at such a speed is cool. However, in a large metropolis with huge competition between providers and mobile operators there can be no such weak internet connection.

Conclusion

Now you know how to determine the speed of the Internet, and you will be able to understand the given units of measurement a little. Of course, getting lost in them is one piece of cake, but the main thing to remember is that a bit is an eighth of a byte. And the prefixes "kilo", "mega" and "giga" only add three, six or nine zeros, respectively. If this is understood, then everything falls into place.

Or TCP / IP.

At higher levels of network models, as a rule, a larger unit is used - bytes per second(B / c or Bps, from the English. b ytes p er s econd ) equal to 8 bit / s.

Derived units

To indicate high transmission speeds, larger units are used, formed with the help of the C system prefixes. kilo, mega-, giga- and so on, getting:

  • Kilobits per second- kbps (kbps)
  • Megabits per second- Mbps (Mbps)
  • Gigabits per second- Gbps (Gbps)

Unfortunately, there is ambiguity regarding the interpretation of prefixes. There are two approaches:

  • kilobit is interpreted as 1000 bits (according to SI, as kilo gram or kilo meter), megabits as 1000 kilobits, etc.
  • kilobit is interpreted as 1024 incl. 8 kbps = 1 kbps (not 0.9765625).

To unambiguously designate the prefix divisible by 1024 (and not 1000), the International Electrotechnical Commission came up with the prefixes “ kibi"(Abbreviated Ki-, Ki-), « mebi"(Abbreviated Mi-, Mi-) etc.

  • 1 byte- 8 bit
  • 1 kibibit- 1024 bits - 128 bytes
  • 1 mebibit- 1048576 bits - 131072 bytes - 128 kB
  • 1 Gibibit- 1073741824 bits - 134217728 bytes - 131072 kB - 128 MB

The telecommunications industry has adopted the SI system for the prefix kilo. That is, 128 Kbps = 128000 bits.

Frequent mistakes

  • Beginners are often confused kilobits c kilobytes expecting a speed of 256 KB / s from a 256 kb / s channel (on such a channel the speed will be 256,000 / 8 = 32,000 B / s = 32,000 / 1,000 = 32 KB / s).
  • Often (mistakenly or intentionally) confuse baud and / s bits.
  • 1 kbaud (as opposed to kbps) is always 1000 baud.

see also

Wikimedia Foundation. 2010.

See what "Mbps" is in other dictionaries:

    Mbps- Mbps megabits per second Mbps. baud rate ...

    Mbps- Mb Mbps megabits Mbps Dictionary: S. Fadeev. Dictionary of abbreviations of the modern Russian language. S. Pb .: Polytechnic, 1997.527 p. Mbps International Bureau of Information and Telecommunications OJSC Moscow ... Dictionary of abbreviations and acronyms

    This article is about the unit of measurement of information. Other values: bit (values). Bit (English binary digit; also a play on words: English bit a little) (one binary digit in the binary system) is one of the most famous units of information measurement. In ... ... Wikipedia

    Mbps- Mbps Mbps. megabits per second Mbps. baud rate ... Dictionary of abbreviations and acronyms

    optical carrier, layer 3 (155.52 Mbps)- (ITU R F.1500). Topics telecommunications, basic concepts EN optical carrier, level 3 (155.52 Mbit / s) OC3 ...

    data transmission in the ISDN network at a speed of 2 Mbit / s- - [L.G. Sumenko. The English Russian Dictionary of Information Technology. M .: GP TsNIIS, 2003.] Subjects information Technology in general EN megastream service ... Technical translator's guide- (ITU T Y.1541). Telecommunications topics, basic concepts EN digital hierarchy transmission at 34 Mbit / sE3 ... Technical translator's guide