Megabytes (MB) to Gigabytes (GB) Converter
The Megabytes (MB) to Gigabytes (GB) Converter turns your Megabyte (MB) value into Gigabytes (GB). Type your storage value in the input field — 1 MB = 0.001 GB, calculated across both decimal (SI) and binary (IEC) standards.
Megabytes (MB) to Gigabytes (GB) Converter
How to Convert Megabytes to Gigabytes
To convert megabytes to gigabytes, divide by 1,000 (using SI decimal). Both units measure storage capacity—the difference is scale. Use our GB → MB.
MB: A megabyte is 1,000 kilobytes or 1,000,000 bytes using the SI decimal standard. Try the convert MB to Tib.
GB: 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. Related: Mib to GB calculator.
1 MB = 0.001 GB (using SI decimal standard) — or equivalently, 1 GB = 1,000MB.
MB to GB Conversion Formula
// Convert MB to GB
GB = MB × 0.001
// Reverse: Convert GB to MB
MB = GB × 1,000Megabyte to Gigabyte Conversion Examples
100 MB = 0.1 GB
256 MB = 0.256 GB
500 MB = 0.5 GB
1,000 MB = 1 GB
2,048 MB = 2.048 GB
Binary Standard (Base 1024)
Using binary calculation: 1 MB = 0.0009765625 GB
100 MB = 0.09765625 GB
1,000 MB = 0.9765625 GB
1,024 MB = 1 GB
What Is a Megabyte (MB)? Definition and Uses
A megabyte is 1,000 kilobytes or 1,000,000 bytes using the SI decimal standard. Learn more: PB to Zib converter.
The megabyte is a SI decimal unit of digital information storage. It uses base 1,000 following the SI (International System of Units) standard. Check out our Kbps to TB/s.
Common uses: MP3 files, high-resolution images, short video clips, software installers You might also need: Megabytes in Pebibits.
1 MB = 8 × 10⁶ bits = 1 × 10⁶ bytes.
The megabyte can be abbreviated as MB; for example, 1 megabyte can be written as 1 MB.
What Is a Gigabyte (GB)? Definition and Uses
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. Use our converting Tebibits to Gigabytes.
The gigabyte is a SI decimal unit of digital information storage. It uses base 1,000 following the SI (International System of Units) standard. Use our Eb to Pb conversion rate.
Common uses: Movies, video games, smartphone storage, USB drives, cloud storage plans See also: calculate bps to YB/s.
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.
Megabyte to Gigabyte Conversion Table
The table below shows various megabyte measurements converted to gigabytes.
| Megabytes | Gigabytes | Gigabytes (Binary) |
|---|---|---|
| 1 MB | 0.001 GB | 0.0009765625 GB |
| 2 MB | 0.002 GB | 0.001953125 GB |
| 5 MB | 0.005 GB | 0.0048828125 GB |
| 10 MB | 0.01 GB | 0.009765625 GB |
| 25 MB | 0.025 GB | 0.0244140625 GB |
| 50 MB | 0.05 GB | 0.048828125 GB |
| 100 MB | 0.1 GB | 0.09765625 GB |
| 128 MB | 0.128 GB | 0.125 GB |
| 250 MB | 0.25 GB | 0.244140625 GB |
| 256 MB | 0.256 GB | 0.25 GB |
| 500 MB | 0.5 GB | 0.48828125 GB |
| 512 MB | 0.512 GB | 0.5 GB |
| 1,000 MB | 1 GB | 0.9765625 GB |
| 1,024 MB | 1.024 GB | 1 GB |
SI Decimal vs Binary: Why Two Different Standards?
When converting megabytes to gigabytes, 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 |
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.