A petabyte (PB) is a massive unit of digital storage equal to 1,024 terabytes (TB) or over 1 quadrillion bytes. It represents a scale of data rarely encountered by individual users but increasingly common in enterprise systems, cloud storage infrastructure, scientific research, and large-scale analytics platforms.
To put it in perspective, a petabyte could store:
Organizations in sectors like cloud computing, artificial intelligence, genomics, finance, and telecommunications routinely work with petabytes of data. Whether storing backup archives or processing real-time analytics, PB-level storage marks the threshold where data becomes a true operational asset — and a challenge to manage efficiently.
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 = Petabyte ÷ "Number of Petabytes in 1 Bit"
Calculation: 100 × 8.0E+15 = 8.0E+17 Bit
Binary (Base 2):
Formula: Bit = Petabyte ÷ "Number of Petabytes in 1 Bit"
Calculation: 100 × 9.007199254741E+15 = 9.007199254741E+17 Bit
| Petabyte | Bit (Binary) | Bit (SI) |
|---|---|---|
| 1 | 9,007,199,254,740,992 | 8,000,000,000,000,000 |
| 2 | 18,014,398,509,481,984 | 16,000,000,000,000,000 |
| 3 | 27,021,597,764,222,976 | 24,000,000,000,000,000 |
| 4 | 36,028,797,018,963,968 | 32,000,000,000,000,000 |
| 5 | 45,035,996,273,704,960 | 40,000,000,000,000,000 |
| 6 | 54,043,195,528,445,952 | 48,000,000,000,000,000 |
| 7 | 63,050,394,783,186,944 | 56,000,000,000,000,000 |
| 8 | 72,057,594,037,927,936 | 64,000,000,000,000,000 |
| 9 | 81,064,793,292,668,928 | 72,000,000,000,000,000 |
| 10 | 90,071,992,547,409,920 | 80,000,000,000,000,000 |
| 11 | 99,079,191,802,150,912 | 88,000,000,000,000,000 |
| 12 | 108,086,391,056,891,904 | 96,000,000,000,000,000 |
| 13 | 117,093,590,311,632,896 | 104,000,000,000,000,000 |
| 14 | 126,100,789,566,373,888 | 112,000,000,000,000,000 |
| 15 | 135,107,988,821,114,880 | 120,000,000,000,000,000 |