A megabyte (MB) is a unit of digital data equal to 1,024 kilobytes (KB) or 1,048,576 bytes. It is commonly used to represent file sizes, especially for images, documents, audio files, and smaller applications.
In practical terms, a high-quality JPEG photo might be around 2–5 MB, while a minute of MP3 audio at standard bitrate can take up about 1 MB. Email attachments, app downloads, and storage space are often measured in megabytes, making it a familiar benchmark for everyday computing.
Although gigabytes (GB) and terabytes (TB) are more frequently referenced for modern storage, megabytes still play an important role in performance-sensitive environments. They're useful for monitoring bandwidth usage, managing mobile data plans, and designing efficient digital systems where minimizing file size is critical.
A bit is the smallest unit of digital information, short for "binary digit." It represents a value of either 0 or 1, forming the foundation of all data in computing systems. Bits are the building blocks of binary code, which powers everything from simple text files to complex artificial intelligence models.
In everyday use, file sizes and storage are rarely measured in bits. Instead, bits are grouped into larger units such as bytes, kilobytes, megabytes, and beyond. Even so, the bit remains a fundamental concept. It's the starting point of all digital information, forming the base upon which every file, app, or system is built. Understanding bits helps make sense of how digital devices store and process data at their core.
SI (Base 10):
Formula: Bit = Megabyte ÷ "Number of Megabytes in 1 Bit"
Calculation: 100 × 8000000 = 800000000 Bit
Binary (Base 2):
Formula: Bit = Megabyte ÷ "Number of Megabytes in 1 Bit"
Calculation: 100 × 8388608 = 838860800 Bit
| Megabyte | Bit (Binary) | Bit (SI) |
|---|---|---|
| 1 | 8,388,608 | 8,000,000 |
| 2 | 16,777,216 | 16,000,000 |
| 3 | 25,165,824 | 24,000,000 |
| 4 | 33,554,432 | 32,000,000 |
| 5 | 41,943,040 | 40,000,000 |
| 6 | 50,331,648 | 48,000,000 |
| 7 | 58,720,256 | 56,000,000 |
| 8 | 67,108,864 | 64,000,000 |
| 9 | 75,497,472 | 72,000,000 |
| 10 | 83,886,080 | 80,000,000 |
| 11 | 92,274,688 | 88,000,000 |
| 12 | 100,663,296 | 96,000,000 |
| 13 | 109,051,904 | 104,000,000 |
| 14 | 117,440,512 | 112,000,000 |
| 15 | 125,829,120 | 120,000,000 |