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Data Storage Converter
Sign up to favourite this calculatorConvert digital storage between bits, bytes and every unit from kilobytes to exabytes, in both the decimal (base 1,000) and binary IEC (base 1,024) systems. The result updates as you type.
Gibibyte (GiB)
Equivalent in bytes
1,000,000,000Save to My calculations
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Assumptions and limits
- An estimate from the numbers you entered, for guidance only. It is not financial, tax or medical advice.
- Calculator version 1, last updated 25 October 2026.
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How to use this calculator
- Type the data size into the Enter data size field.
- Pick the unit you are converting From and the unit you want the answer To. Every option shows the name and the symbol, so Gigabyte (GB) and Gibibyte (GiB) are never mixed up.
- Choose how many decimal places the result shows. Max keeps every significant digit, so a tiny conversion such as 1 bit to GB still reads 0.000000000125 rather than rounding to zero.
- Read the headline conversion, with the exact byte equivalent beside it. The unit definitions in bytes appear in the results.
What do I need to enter?
- Enter data size — the amount to convert, from 0 to 1,000,000,000,000.
- From and To — the unit you start with and the unit you want. Both lists hold bits, bytes, decimal units from kilobytes (kB) to exabytes (EB) and binary units from kibibytes (KiB) to exbibytes (EiB).
- Decimal places — 2, 4, 6 or Max. Max keeps every significant digit, so a very small result never rounds to zero.
What do the results show?
- The converted value — the main figure, labelled with the destination unit's name and symbol.
- Equivalent in bytes — the same amount in bytes, so you can check the conversion. When you convert to bytes it shows Equivalent in bits instead.
- Unit definitions — how many bytes one of each chosen unit holds, listed in the results.
How is a data storage conversion calculated?
Every unit is converted through bytes, so there is one exact factor per unit:
bytes = value × (bytes in the source unit)
result = bytes ÷ (bytes in the destination unit)
- 1 GB = 1,000,000,000 bytes (decimal, base 1,000).
- 1 GiB = 1,073,741,824 bytes (binary, base 1,024).
Example: convert 1 GB to GiB
- 1 GB × 1,000,000,000 = 1,000,000,000 bytes.
- 1,000,000,000 ÷ 1,073,741,824 = 0.931323 GiB.
Decimal vs binary storage units
Digital storage can be measured using decimal or binary units. Decimal units use steps of 1,000, while binary units use steps of 1,024. A lowercase b means bits and an uppercase B means bytes.
| Prefix | Decimal (base 1,000) | Binary (base 1,024) |
|---|---|---|
| Kilo | 1 kB = 1,000 bytes | 1 KiB = 1,024 bytes |
| Mega | 1 MB = 1,000,000 bytes | 1 MiB = 1,048,576 bytes |
| Giga | 1 GB = 1,000,000,000 bytes | 1 GiB = 1,073,741,824 bytes |
| Tera | 1 TB = 1,000,000,000,000 bytes | 1 TiB = 1,099,511,627,776 bytes |
Why can a hard drive appear smaller than advertised?
Storage manufacturers usually describe capacity using decimal units. For example, a 1 TB drive contains 1,000,000,000,000 bytes. When software reports that same capacity using binary-based calculations, it is approximately 931 GiB, so the displayed number can appear lower even though the drive capacity has not changed.
Precisely, 1 TB is about 931.32 GiB, while many operating systems label that binary-based value as roughly 931 “GB”. No storage is lost — only the unit used to describe it differs.
What is the difference between bits and bytes?
A bit is the smallest unit of digital information. A byte is made up of 8 bits. Use lowercase b for bits and uppercase B for bytes: for example, 100 Mbps is different from 100 MB/s.
Common data storage conversions
| Value | Equivalent |
|---|---|
| 8 bits | 1 byte |
| 1 kB | 1,000 bytes |
| 1 KiB | 1,024 bytes |
| 1 MB | 1,000 kB |
| 1 MiB | 1,024 KiB |
| 1 GB | 1,000 MB |
| 1 GiB | 1,024 MiB |
| 1 TB | 1,000 GB |
| 1 TiB | 1,024 GiB |
Frequently asked questions
What is the difference between KB and KiB?
A kilobyte (kB) is 1,000 bytes. A kibibyte (KiB) is 1,024 bytes. The difference comes from decimal storage units using base 1,000 and binary units using base 1,024.
What is the difference between GB and GiB?
A gigabyte (GB) equals 1,000,000,000 bytes. A gibibyte (GiB) equals 1,073,741,824 bytes. One GB is approximately 0.931323 GiB.
How many bytes are in a megabyte?
One decimal megabyte (MB) is 1,000,000 bytes. One binary mebibyte (MiB) is 1,048,576 bytes.
How many bits are in a byte?
There are 8 bits in 1 byte.
Why does my drive show less storage than the label?
Drive manufacturers generally use decimal units, while some operating systems display capacity using binary calculations. This difference in measurement can make the reported number appear smaller.
Is 1 TB equal to 1,000 GB?
Yes. In decimal units, 1 TB equals 1,000 GB. In binary units, 1 TiB equals 1,024 GiB.
Last updated 25 October 2026.