Quick answer: 1 Gigabyte (GB) in Megabyte (MB)
1 GB equals 1024 MB. To convert Gigabyte (GB) to Megabyte (MB), multiply by 1024 using the free calculator above — no signup needed.
Digital Data & Storage units
Every unit in this category with its exact value. Click any card to open its converter.
About Digital Data & Storage Converter
The Digital Data & Storage Converter converts between 9 different units, including Byte (B), Bit (b), Kilobyte (KB), Megabyte (MB), Gigabyte (GB). The base unit is the Byte (B), and every other unit on this page is defined as an exact multiple of it. Type any value into the calculator above to convert instantly — free, unlimited, no signup and nothing to install.
Common equivalents: 1 Byte (B) = 8 Bit (b), 0.000976563 Kilobyte (KB), 0.00000095367431640625 Megabyte (MB).
Scale of this category: the smallest unit is the Bit (b) (b) and the largest is the Petabyte (PB) (PB).
Last updated: 2026-09-15
Digital Data & Storage conversion factors
| Unit | Symbol | Value in Byte (B) |
|---|---|---|
| Byte (B) | B | 1 B = 1 B |
| Bit (b) | b | 1 b = 0.125 B |
| Kilobyte (KB) | KB | 1 KB = 1024 B |
| Megabyte (MB) | MB | 1 MB = 1048576 B |
| Gigabyte (GB) | GB | 1 GB = 1073741824 B |
| Terabyte (TB) | TB | 1 TB = 1099511627776 B |
| Petabyte (PB) | PB | 1 PB = 1125899906842624 B |
| Megabit (Mb) | Mb | 1 Mb = 131072 B |
| Gigabit (Gb) | Gb | 1 Gb = 134217728 B |
Worked Examples
See exactly how the conversion works with real numbers, step by step.
How much is 1 Gigabyte (GB) in Megabyte (MB)?
- Multiply 1 by the conversion factor 1024
- 1 Gigabyte (GB) = 1024 Megabyte (MB)
How much is 5 Gigabyte (GB) in Megabyte (MB)?
- Multiply 5 by the conversion factor 1024
- 5 Gigabyte (GB) = 5120 Megabyte (MB)
How much is 25 Gigabyte (GB) in Megabyte (MB)?
- Multiply 25 by the conversion factor 1024
- 25 Gigabyte (GB) = 25600 Megabyte (MB)
Quick Conversion Reference Table
| Gigabyte (GB) (GB) | Megabyte (MB) (MB) |
|---|---|
| 1 GB (Gigabyte (GB)) | 1024 MB (Megabyte (MB)) |
| 2 GB (Gigabyte (GB)) | 2048 MB (Megabyte (MB)) |
| 5 GB (Gigabyte (GB)) | 5120 MB (Megabyte (MB)) |
| 10 GB (Gigabyte (GB)) | 10240 MB (Megabyte (MB)) |
| 20 GB (Gigabyte (GB)) | 20480 MB (Megabyte (MB)) |
| 50 GB (Gigabyte (GB)) | 51200 MB (Megabyte (MB)) |
| 100 GB (Gigabyte (GB)) | 102400 MB (Megabyte (MB)) |
| 500 GB (Gigabyte (GB)) | 512000 MB (Megabyte (MB)) |
| 1000 GB (Gigabyte (GB)) | 1024000 MB (Megabyte (MB)) |
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How to Use This Converter
- Enter your value
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- Choose your units
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FAQ
How much is 1 Gigabyte (GB) in Megabyte (MB)?
1 Gigabyte (GB) = 1024 Megabyte (MB).
How do I convert Gigabyte (GB) to Megabyte (MB)?
Enter your value in Gigabyte (GB) into the converter above and the result in Megabyte (MB) appears instantly. 1 GB equals 1024 MB — just multiply your value by 1024.
What is the formula for Gigabyte (GB) to Megabyte (MB)?
The formula is: value in Megabyte (MB) = value in Gigabyte (GB) × 1024. For example, 5 GB × 1024 = 5120 MB.
Is this Gigabyte (GB) to Megabyte (MB) converter free and accurate?
Yes. This Gigabyte (GB) to Megabyte (MB) converter is 100% free, uses the exact international conversion factor (1024), and works on any device with no signup.
How do I convert Megabyte (MB) back to Gigabyte (GB)?
To convert back, divide by 1024 (or multiply by 0.000976563). You can also use our dedicated How Many Gigabyte (GB) in 1 Megabyte (MB)? page for instant results.
Do I need to download an app or sign up?
No. The converter runs entirely in your browser — nothing to install, no account, no fees. It even keeps working offline once the page has loaded.
Which Digital Data & Storage units are supported?
This converter supports 9 units: Byte (B), Bit (b), Kilobyte (KB), Megabyte (MB), Gigabyte (GB), Terabyte (TB), Petabyte (PB), Megabit (Mb), Gigabit (Gb).