Gigabytes to Megabytes Converter
GB → MB · 💾 Data Storage
1 Gigabytes = 1,024 Megabytes
How to convert Gigabytes to Megabytes
To convert Gigabytes to Megabytes, multiply the value in Gigabytes by 1,024. For example, 5 GB = 5,120 MB.
Converting Gigabytes (GB) to Megabytes (MB) is a frequent need, and the exact relationship is 1 GB = 1,024 MB. Whether you're working on a project, checking a specification, or just curious, the calculator above gives you the answer instantly for any value you enter.
Digital storage conversions matter for managing files, planning backups, comparing devices, and understanding internet speeds. The field has a famous complication: the difference between decimal and binary interpretations of the same unit names.
Understanding Gigabytes and Megabytes
Storage manufacturers typically use decimal units (1 GB = 1,000 MB), while operating systems often report in binary (1 GiB = 1,024 MiB). This is why a '1 TB' drive shows up as roughly 931 GB in your file manager. Bytes, kilobytes, megabytes, gigabytes, and terabytes form the everyday ladder of digital storage.
How accurate is this conversion?
The conversions here use the decimal (SI) standard where each step is a factor of 1,000, which matches how storage and bandwidth are marketed and sold. If your operating system reports different figures, it is using binary (1,024-based) units.
All conversion factors on ClearUnits are based on internationally recognised standards (the International System of Units, SI, and official definitions). Factors are reviewed for accuracy and the calculator uses full-precision values, rounding only the displayed result.
Quick reference: common Gigabytes to Megabytes values
The most frequently searched conversions are 1 Gigabytes = 1,024 Megabytes, 5 Gigabytes = 5,120 Megabytes, 10 Gigabytes = 10,240 Megabytes, and 100 Gigabytes = 102,400 Megabytes. The full table further down covers every common value, and the calculator handles any number you need in between.
Pro tip: When buying storage, remember that advertised capacity is always decimal. A 500 GB drive holds 500 billion bytes, which your computer will display as about 465 GiB — that's not missing space, just a different counting system.
Gigabytes to Megabytes — Conversion Table
| Gigabytes (GB) | Megabytes (MB) |
|---|---|
| 0.1 GB | 102.4 MB |
| 0.25 GB | 256 MB |
| 0.5 GB | 512 MB |
| 1 GB | 1,024 MB |
| 2 GB | 2,048 MB |
| 5 GB | 5,120 MB |
| 10 GB | 10,240 MB |
| 25 GB | 25,600 MB |
| 50 GB | 51,200 MB |
| 100 GB | 102,400 MB |
| 250 GB | 256,000 MB |
| 500 GB | 512,000 MB |
| 1000 GB | 1,024,000 MB |