Case 1
- Size to convert
- 1
- From unit
- Gigabytes (GB)
- To unit
- Megabytes (MB)
1,000.000000
Open with these valuesData Size Converter
1,000.000000
Result: 1,000.000000KB, MB and GB step in thousands; KiB, MiB and GiB step in 1024s. That is why a 1 TB drive shows up as 931 GiB — no bytes went missing, the ruler changed. A byte holds 8 bits, so 8 bit make exactly 1 B.
Most-used pairs
each is its own pageGigabytes to megabytes1 GB = 1000 MBMegabytes to gigabytes1 MB = 0.001 GBTerabytes to gigabytes1 TB = 1000 GBMegabytes to kilobytes1 MB = 1000 KBGigabytes to gibibytes1 GB = 0.931323 GiBGibibytes to gigabytes1 GiB = 1.073742 GBBytes to bits1 B = 8 bit
All 10 units
| Unit | Symbol | In B | Typical use |
|---|---|---|---|
| Bit | bit | 0.125 | A single binary digit |
| Byte | B | 1 | Eight bits — the reference unit |
| Kilobyte | KB | 1,000 | 1000 bytes — decimal, 10³ |
| Megabyte | MB | 1,000,000 | Photos and songs — decimal, 10⁶ |
| Gigabyte | GB | 1,000,000,000 | Films, storage adverts — 10⁹ |
| Terabyte | TB | 1,000,000,000,000 | Drive capacity — decimal, 10¹² |
| Kibibyte | KiB | 1,024 | 1024 bytes — binary, 2¹⁰ |
| Mebibyte | MiB | 1,048,576 | What the OS calls MB — 2²⁰ |
| Gibibyte | GiB | 1,073,741,824 | What the OS calls GB — 2³⁰ |
| Tebibyte | TiB | 1,099,511,627,776 | What the OS calls TB — 2⁴⁰ |
Gigabyte to Megabyte
prints complete- 1 GB
- 1,000 MB
- 2 GB
- 2,000 MB
- 3 GB
- 3,000 MB
- 4 GB
- 4,000 MB
- 5 GB
- 5,000 MB
- 6 GB
- 6,000 MB
- 7 GB
- 7,000 MB
- 8 GB
- 8,000 MB
- 9 GB
- 9,000 MB
- 10 GB
- 10,000 MB
- 11 GB
- 11,000 MB
- 12 GB
- 12,000 MB
- 13 GB
- 13,000 MB
- 14 GB
- 14,000 MB
- 15 GB
- 15,000 MB
- 16 GB
- 16,000 MB
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Worked examples
Case 2
- Size to convert
- 1
- From unit
- Terabytes (TB)
- To unit
- Gibibytes (GiB)
931.322575
Open with these valuesCase 3
- Size to convert
- 8
- From unit
- Bits (bit)
- To unit
- Bytes (B)
1.000000
Open with these valuesHow it's calculated
bytes = value × from-factor; result = bytes ÷ to-factor
- StepEnter the size and pick the unit it is in.
- StepPick the unit you want it in.
- StepEverything is normalised to bytes and back out again.
- ResultRead the result — decimal and binary units mix freely.
Reference table
| Unit | Bytes | Family |
|---|---|---|
| bit | 0.125 | an eighth of a byte |
| B | 1 | the reference unit |
| KB | 1,000 | decimal, 10³ |
| MB | 1,000,000 | decimal, 10⁶ |
| GB | 1,000,000,000 | decimal, 10⁹ |
| TB | 1,000,000,000,000 | decimal, 10¹² |
| KiB | 1,024 | binary, 2¹⁰ |
| MiB | 1,048,576 | binary, 2²⁰ |
| GiB | 1,073,741,824 | binary, 2³⁰ |
| TiB | 1,099,511,627,776 | binary, 2⁴⁰ |
Questions
How many megabytes are in a gigabyte?
In the decimal system 1 GB is exactly 1000 MB, because a gigabyte is 1,000,000,000 bytes and a megabyte is 1,000,000 bytes.
What is the difference between MB and MiB?
A megabyte (MB) is 1,000,000 bytes, a power of 1000 used by storage makers and the SI standard. A mebibyte (MiB) is 1,048,576 bytes, a power of 1024 used by most operating systems. They differ by about 4.9 % at the mega scale, and the gap widens for larger units.
Why does a 1 TB drive show as about 931 GB?
The drive really holds 1,000,000,000,000 bytes, which is 1 TB decimal. Your operating system divides by 1024³ and reports 931.32 GiB, usually labelled GB. Nothing shrank — one side counts in 1000s, the other in 1024s.
How many bits are in a byte?
Eight. That is why a line rated at 100 Mbit/s moves about 12.5 MB per second, which is 100 ÷ 8, and why the lowercase b and the uppercase B are worth reading carefully.
Sources and last check
Information, not professional advice.