Gigabytes (GB) to Mebibytes (MiB) Converter
Enter your Gigabytes (GB) value to convert to Mebibytes (MiB). 1 GB = 953.6743164063 MiB, calculated across both decimal (SI) and binary (IEC) standards.
Convert Gigabytes to Mebibytes
Do you want to convert mebibytes to gigabytes?
How to Convert Gigabytes to Mebibytes
To convert gigabytes (decimal/SI) to mebibytes (binary/IEC), multiply by 953.6743164063. Decimal units use base 1,000, while binary units use base 1,024. Learn more: Mebibytes to GB calculator.
GB is a decimal (SI) unit—what storage manufacturers advertise. 1 GB = 1,000 of the smaller unit. Related: convert GB to Exbibytes.
MiB is a binary (IEC) unit—what operating systems often display. 1 MiB = 1,024 of the smaller unit. Learn more: Yottabits to MiB.
1 GB = 953.6743164063 MiB (using SI decimal standard) — which means there are 953.6743164063mebibytes in every gigabyte.
GB to MiB Conversion Formula
// Convert GB to MiB
MiB = GB × 953.6743164063
// Reverse: Convert MiB to GB
GB = MiB × 0.001048576
GB to MiB Conversion Examples
100 GB = 95,367.431641 MiB
256 GB = 244,140.625 MiB
500 GB = 476,837.158203 MiB
1,000 GB = 953,674.316406 MiB
2,048 GB = 1,953,125 MiB
What Is a Gigabyte?
A gigabyte is 1,000 megabytes or 1,000,000,000 bytes using the SI decimal standard. This is what hard drive manufacturers typically use. Try the how many Tib in Bytes.
The gigabyte is a SI decimal unit of digital information storage. It uses base 1,000 following the SI (International System of Units) standard. Related: how many Megabits Per Second in a Zibps.
Common uses: Movies, video games, smartphone storage, USB drives, cloud storage plans You might also need: calculate GB to Eib.
1 GB = 8 × 10⁹ bits = 1 × 10⁹ bytes.
The gigabyte can be abbreviated as GB; for example, 1 gigabyte can be written as 1 GB.
What Is a Mebibyte?
A mebibyte is 1,024 kibibytes or 1,048,576 bytes using the IEC binary standard. Check out our Zib to MiB conversion rate.
The mebibyte is a IEC binary unit of digital information storage. It uses base 1,024 following the IEC (International Electrotechnical Commission) standard. Related: converting Exabytes to Zebibytes.
Common uses: Linux file sizes, RAM specifications, software download sizes Related: Tebibits Per Second in Zettabits Per Second.
1 MiB = 8 × 10⁶ bits = 1 × 10⁶ bytes.
The mebibyte can be abbreviated as MiB; for example, 1 mebibyte can be written as 1 MiB.
Gigabyte to Mebibyte Conversion Table
The table below shows various gigabyte measurements converted to mebibytes.
| Gigabytes | Mebibytes |
|---|---|
| 1 GB | 953.67431641 MiB |
| 2 GB | 1,907.34863281 MiB |
| 5 GB | 4,768.37158203 MiB |
| 10 GB | 9,536.74316406 MiB |
| 25 GB | 23,841.85791016 MiB |
| 50 GB | 47,683.71582031 MiB |
| 100 GB | 95,367.43164063 MiB |
| 128 GB | 122,070.3125 MiB |
| 250 GB | 238,418.57910156 MiB |
| 256 GB | 244,140.625 MiB |
| 500 GB | 476,837.15820313 MiB |
| 512 GB | 488,281.25 MiB |
| 1,000 GB | 953,674.31640625 MiB |
| 1,024 GB | 976,562.5 MiB |
SI Decimal vs Binary: Why Two Different Standards?
When converting gigabytes to mebibytes, different tools may give slightly different results. This is because there are two competing standards for measuring digital storage:
| Standard | Base | 1 KB equals | Used By |
|---|---|---|---|
| SI Decimal | 1000 | 1,000 bytes | Hard drive manufacturers, macOS, network speeds |
| Binary (IEC) | 1024 | 1,024 bytes | Windows, Linux (partially), RAM specifications |
Why Does My Hard Drive Show Less Space Than Advertised?
This difference in standards explains the common "missing hard drive space" confusion.
Example: A "500 GB" Hard Drive
- Contains exactly: 500,000,000,000 bytes
- macOS (SI Decimal): Displays 500 GB (divides by 1,000³)
- Windows (Binary): Displays 465 GB (divides by 1,024³)
The Verdict: Same bytes, same drive—just different math. No space is actually missing.
Note: Our calculator defaults to SI decimal (base 1000) to match the box label. To match Windows, toggle the standard at the top of the calculator.
💡 Storage Engineer Tip
The ~9.95% difference between binary and decimal units compounds at each level. A 1 TB drive shows as 931 GiB in Windows because of this standard mismatch—no space is actually lost.
— Subash Geetha Krishnan, 15+ years in enterprise storage
When to Convert GB to MiB
Common scenario: Reconciling the difference between what drive manufacturers advertise and what your operating system displays. Related: GB to EB.
Other situations include storage planning for calculating how much data fits in a given capacity, file management for understanding sizes across different scales, cost estimation for budgeting cloud storage, and backup planning for determining media requirements. Related: Tib to MiB converter.