Conversor de armazenamento de dados

Converta GB para MB, TB para GB e GiB para GB separando prefixos decimais (kB, MB, GB, TB) e binários (KiB, MiB, GiB, TiB), além de bits e bytes.

Atualizado Exemplos verificados: 5

Um número na unidade de origem, ou acompanhado de sua própria unidade
Experimentar
Valor convertido
MB
Valor convertido: 1,073.741824 MB
Algarismos significativos: 12; Ao mais próximo; empates afastando-se de zero
Conversão
1 GiB = 1,073.741824 MB
Fator de conversão
1,073.741824
Exatidão
Exato

1 GiB equivale exatamente a 1,073.741824 MB.

Quanto cada prefixo binário supera o seu equivalente decimal

KiB versus kB: 2.4%2.4%KiB versus kBMiB versus MB: 4.86%4.86%GiB versus GB: 7.37%7.37%GiB versus GBTiB versus TB: 9.95%9.95%PiB versus PB: 12.6%12.6%PiB versus PBEiB versus EB: 15.3%15.3%ZiB versus ZB: 18.1%18.1%ZiB versus ZBYiB versus YB: 20.9%20.9%
1 GiB em cada unidade de Armazenamento de dados Linhas: 25
UnidadeValorDefinição
bit8,589,934,592Unidade base
nibble2,147,483,6481 nibble = 4 bit, exato
byte (B)1,073,741,8241 B = 8 bit, exato
kilobyte (kB)1,073,741.8241 kB = 8,000 bit, exato
megabyte (MB)1,073.7418241 MB = 8,000,000 bit, exato
gigabyte (GB)1.0737418241 GB = 8,000,000,000 bit, exato
terabyte (TB)0.0010737418241 TB = 8,000,000,000,000 bit, exato
petabyte (PB)0.0000010737418241 PB = 8 × 10¹⁵ bit, exato
exabyte (EB)1.073741824 × 10⁻⁹1 EB = 8 × 10¹⁸ bit, exato
zettabyte (ZB)1.073741824 × 10⁻¹²1 ZB = 8 × 10²¹ bit, exato
yottabyte (YB)1.073741824 × 10⁻¹⁵1 YB = 8 × 10²⁴ bit, exato
kibibyte (KiB)1,048,5761 KiB = 8,192 bit, exato
mebibyte (MiB)1,0241 MiB = 8,388,608 bit, exato
gibibyte (GiB)11 GiB = 8,589,934,592 bit, exato
tebibyte (TiB)0.00097656251 TiB = 8,796,093,022,208 bit, exato
pebibyte (PiB)9.536743 × 10⁻⁷1 PiB = 9.007199254740992 × 10¹⁵ bit, exato
exbibyte (EiB)9.313226 × 10⁻¹⁰1 EiB = 9.223372036854775808 × 10¹⁸ bit, exato
zebibyte (ZiB)9.094947 × 10⁻¹³1 ZiB = 9.4447329657392904274 × 10²¹ bit, exato
yobibyte (YiB)8.881784197 × 10⁻¹⁶1 YiB = 9.6714065569170333976 × 10²⁴ bit, exato
kilobit (kbit)8,589,934.5921 kbit = 1,000 bit, exato
megabit (Mbit)8,589.9345921 Mbit = 1,000,000 bit, exato
gigabit (Gbit)8.5899345921 Gbit = 1,000,000,000 bit, exato
terabit (Tbit)0.0085899345921 Tbit = 1,000,000,000,000 bit, exato
kibibit (Kibit)8,388,6081 Kibit = 1,024 bit, exato
mebibit (Mibit)8,1921 Mibit = 1,048,576 bit, exato
Como é calculado S
  1. Converter gibibyte em bit

    1 GiB×8,589,934,592 bitGiB=8,589,934,592 bit1\ \text{GiB} \times 8{,}589{,}934{,}592\ \tfrac{\text{bit}}{\text{GiB}} = 8{,}589{,}934{,}592\ \text{bit}

    1 GiB = 8,589,934,592 bit, exato

  2. Converter bit em megabyte

    8,589,934,592 bit÷8,000,000 bitMB=1,073.741824 MB8{,}589{,}934{,}592\ \text{bit} \div 8{,}000{,}000\ \tfrac{\text{bit}}{\text{MB}} = 1{,}073.741824\ \text{MB}

    1 MB = 8,000,000 bit, exato

  3. Fator combinado

    1 GiB=8,589,934,5928,000,000 MB=1,073.741824 MB1\ \text{GiB} = \frac{8{,}589{,}934{,}592}{8{,}000{,}000}\ \text{MB} = 1{,}073.741824\ \text{MB}

    As duas unidades têm definições exatas e o valor convertido é um decimal finito; portanto, todos os dígitos exibidos são exatos.

Sobre Conversor de armazenamento de dados

Data sizes use two sets of prefixes. The decimal ones follow the SI: 1 kB = 1,000 bytes, 1 MB = 10⁶ and 1 GB = 10⁹ bytes. The binary ones, approved by the IEC in December 1998 and now part of IEC 80000-13, step by 1,024: 1 KiB = 1,024 bytes, 1 MiB = 2²⁰ and 1 GiB = 2³⁰ bytes. A byte is 8 bits, and every conversion between these units is exact.

The default converts 1 GiB to 1,073.741824 MB. The same gap explains why a new drive looks smaller: a 1 TB drive holds 10¹² bytes, which software counting in binary units shows as 931.32 GiB, often labelled “931 GB”.

The gap grows with each prefix: 2.4% at kilo, 7.37% at giga, 9.95% at tera and 20.9% at yotta. Memory chips come in powers of two, so RAM sizes are binary even when written GB, while drive makers and network speeds use decimal prefixes.

Exemplos resolvidos

1 GiB in MB

Valor
1 GiB
De
gibibyte (GiB)
Para
megabyte (MB)
Valor convertido
1,073.741824 MB
Exatidão
Exato

Fonte de verificação: 2³⁰ bytes = 1,073,741,824 bytes (IEC 80000-13); ÷ 10⁶

A 1 TB drive in GiB

Valor
1 TB
De
terabyte (TB)
Para
gibibyte (GiB)
Valor convertido
931.322574615 GiB

Fonte de verificação: 10¹² / 2³⁰ = 244140625/262144, a terminating decimal (Python fractions)

1 KiB in kB

Valor
1 KiB
De
kibibyte (KiB)
Para
kilobyte (kB)
Valor convertido
1.024 kB

Fonte de verificação: 1024 bytes / 1000 bytes

Largest gap: 1 YiB in YB

Valor
1 YiB
De
yobibyte (YiB)
Para
yottabyte (YB)
Valor convertido
1.20892581961 YB

Fonte de verificação: 2⁸⁰ / 10²⁴ = 1.208925819614629174706176 exactly (Python fractions)

Perguntas

Why does my 1 TB drive show only 931 GB?

Because the maker and the operating system count differently. The drive's 1 TB is 10¹² bytes; Windows divides by 2³⁰ and shows 931.32 while labelling it GB. Nothing is missing, since 10¹² ÷ 1,073,741,824 = 931.32; formatting and recovery partitions take a little more. macOS has counted in decimal since OS X 10.6 and shows the same drive as 1 TB.

Is 1 GB 1,000 MB or 1,024 MB?

Under the SI and IEC 80000-13, 1 GB is exactly 1,000 MB (10⁹ bytes), and the binary unit is 1 GiB = 1,024 MiB (2³⁰ bytes). Drive makers and macOS use the decimal meaning; RAM and Windows use the binary one while writing GB. The “1.44 MB” floppy disk mixed the two: 1,440 × 1,024 bytes.

How many bits are in a byte?

Eight. IEC 80000-13 defines the byte as 8 bits, also called an octet. File sizes are counted in bytes (B) and network speeds in bits per second (bit/s), so a 100 Mbit/s connection moves at most 12.5 MB per second; a capital B marks bytes.

What is a GiB?

A gibibyte, 2³⁰ = 1,073,741,824 bytes. The IEC created the binary prefixes kibi, mebi, gibi and tebi so that kilo, mega and giga could keep their SI meanings of 10³, 10⁶ and 10⁹. Many Linux tools and technical specifications use GiB; Windows shows the same quantity labelled GB.

How many GB are in 1 TB?

1,000 GB in decimal units, which is how drives are sold. In binary units 1 TiB is 1,024 GiB, and a decimal 1 TB is 931.32 GiB. The converter keeps TB, TiB, GB and GiB separate, so you can see that 1 TiB is 1,099.51 GB, about 10% more than 1 TB.

Qual é a precisão de “Conversor de armazenamento de dados”?

A precisão depende dos dados inseridos e das hipóteses do método. O cálculo decimal usa 50 algarismos significativos, mas estimativas, métodos numéricos e dados de origem podem ter menor precisão; o arredondamento exibido não elimina essas limitações. Exemplos resolvidos verificados com fontes independentes: 5. Por exemplo, “1 GiB in MB” é verificado com 2³⁰ bytes = 1,073,741,824 bytes (IEC 80000-13); ÷ 10⁶.

De onde vem o método?

NIST SP 811 (2008), Guide for the Use of the SI, Appendix B — conversion factors; NIST Handbook 44, Appendix C — General tables of units of measurement; NIST — Prefixes for binary multiples (IEC 80000-13).

Sobre esta calculadora

xto=xfrom×ffromftof=one unit expressed in bit\begin{gathered} x_{\text{to}} = x_{\text{from}} \times \dfrac{f_{\text{from}}}{f_{\text{to}}} \\ f = \text{one unit expressed in } \text{bit} \end{gathered}

Fontes

  1. NIST SP 811 (2008), Guide for the Use of the SI, Appendix B — conversion factors
  2. NIST Handbook 44, Appendix C — General tables of units of measurement
  3. NIST — Prefixes for binary multiples (IEC 80000-13)

Verificado com as referências

Esta calculadora inclui 5 exemplos resolvidos com respostas de fontes independentes. Eles fazem parte do conjunto de testes e você também pode executá-los aqui.

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