Convert data storage units — bytes, KB, MB, GB, TB, PB.
| Unit | Name | Value |
|---|---|---|
| bit | Bit | 8388608 |
| B | Byte | 1048576 |
| KB | Kilobyte | 1024 |
| GB | Gigabyte | 0.0009765625 |
| TB | Terabyte | 9.536844e-7 |
| PB | Petabyte | 9.313432e-10 |
Formula: Gigabyte = Megabyte × 0.001
Multiply any megabyte value by 0.001 to get gigabyte. One megabyte equals 0.001 GB.
Reverse: Megabyte = Gigabyte × 1000
Common megabyte values with real-world context — factor: 1 MB = 0.001 GB
| Megabyte (MB) | Gigabyte (GB) | Context |
|---|---|---|
| 0.001 MB | 1.000e-06 GB | 1 KB text |
| 0.1 MB | 0.0001 GB | Small webpage |
| 1 MB | 0.001 GB | Small photo |
| 5 MB | 0.005 GB | MP3 song |
| 10 MB | 0.01 GB | MP3 song |
| 50 MB | 0.05 GB | Short video |
| 100 MB | 0.1 GB | Long video clip |
| 650 MB | 0.65 GB | CD-ROM |
| 1,000 MB | 1 GB | 1 GB file |
| 4,700 MB | 4.7 GB | DVD disc |
| 1e+04 MB | 10 GB | Blu-ray disc |
| 5e+04 MB | 50 GB | 50 GB game |
| 1e+05 MB | 100 GB | 100 GB drive |
| 5e+05 MB | 500 GB | 500 GB SSD |
| 1e+06 MB | 1,000 GB | 1 TB drive |
MB ÷ 1,000 = GB (decimal). Move decimal 3 places left.
500 MB = 0.5 GB, 1,000 MB = 1 GB, 4,700 MB ≈ 4.7 GB (one DVD).
GB × 1,000 = MB.
Optimizes image, video, and asset sizes in MB for page load performance.
Enforces attachment size limits (typically 10-25 MB) on mail servers.
Manages APK/IPA sizes in MB — App Store recommends under 200 MB for cellular download.
Checks RAW image file sizes (typically 20-50 MB) on camera cards.
Monitors packet capture file sizes and network log sizes in MB.
Tracks patch download sizes in MB to estimate download time on their connection.
The megabyte (MB) equals 1,000,000 bytes (decimal) or 1,048,576 bytes (binary). It became the dominant unit for file sizes and storage in the 1990s with the rise of personal computing and the internet.
Megabytes define everyday digital content: a 3-minute MP3 song is about 3-5 MB; a high-resolution JPEG photo is 2-6 MB; a standard web page averages around 2 MB including images.
Interesting fact: The entire text of the King James Bible is about 4.3 MB. The first consumer CD-ROMs (1985) held 650 MB, which seemed enormous at the time.
The gigabyte (GB) equals 1,000,000,000 bytes (decimal) or 1,073,741,824 bytes (binary). The distinction matters: Windows historically reported drive sizes in binary gigabytes, while drive manufacturers used decimal — causing the perennial 'missing space' confusion.
Gigabytes define modern consumer storage: smartphone apps, photos, and videos. A typical smartphone photo is 3-5 MB, so 1 GB holds roughly 200-300 photos. A 4K movie takes 60-100 GB.
Interesting fact: The first 1 GB hard drive (IBM 3380, 1980) weighed 250 kg and cost $40,000. Today, a 1 GB microSD card costs about $0.10.
Converting megabyte to gigabyte is a common task in computing, networking, and data management. Storage manufacturers, operating systems, and network equipment often express data sizes in different units — understanding the conversion is essential for comparing specifications, planning storage capacity, and interpreting network speed versus file size relationships.
As a practical reference: 5 MB = 0.005 GB and 10 MB = 0.01 GB. For larger quantities, 100 MB = 0.1 GB. The reverse conversion uses the factor 1000, so 1 GB = 1000 MB. Note that decimal prefixes (KB=1,000, MB=1,000,000) differ from binary prefixes (KiB=1,024, MiB=1,048,576) — always check which standard your software or hardware uses.
All conversions use the internationally recognized factor of exactly 1 MB = 0.001 GB, calculated with IEEE 754 double-precision arithmetic accurate to at least 8 significant figures.