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Convert digital file storage sizes between Bytes, KB, MB, GB, TB, and binary GiB/TiB. Fast and accurate computer memory and hard drive size calculator.
Real drive space vs advertised capacity
Remember that 1 Byte equals 8 bits. Storage drives count in thousands (1 GB = 1,000 MB), while operating systems count in 1024s (1 GiB = 1,024 MiB).
| Gigabyte (10⁹) (GB) | Terabyte (10¹²) (TB) | Terabyte (10¹²) (Reverse) | Gigabyte (10⁹) Equivalent | Action |
|---|---|---|---|---|
| 0.1 GB | 0.00010 TB | 0.1 TB | 100.00000 GB | |
| 0.5 GB | 0.00050 TB | 0.5 TB | 500.00000 GB | |
| 1 GB | 0.00100 TB | 1 TB | 1,000.00000 GB | |
| 2 GB | 0.00200 TB | 2 TB | 2,000.00000 GB | |
| 5 GB | 0.00500 TB | 5 TB | 5,000.00000 GB | |
| 10 GB | 0.01000 TB | 10 TB | 10,000.00000 GB | |
| 20 GB | 0.02000 TB | 20 TB | 20,000.00000 GB | |
| 50 GB | 0.05000 TB | 50 TB | 50,000.00000 GB | |
| 100 GB | 0.10000 TB | 100 TB | 100,000.00000 GB | |
| 500 GB | 0.50000 TB | 500 TB | 500,000.00000 GB | |
| 1000 GB | 1.00000 TB | 1000 TB | 1,000,000.00000 GB |
Symbol: b. Commonly used in: si.
Symbol: B. Commonly used in: si.
Symbol: KB. Commonly used in: si.
Symbol: MB. Commonly used in: si.
Symbol: GB. Commonly used in: si.
Every conversion starts with the standard baseline rate between these two units:
Multiply your entered number by the conversion rate to calculate the exact target value:
The result is neatly rounded to your preferred decimal setting so it is clear and ready to use:
| Unit Name | Symbol | System | Conversion Rate | Common Uses |
|---|---|---|---|---|
| Bit | b | si | 1 b = 1.000000 b | Everyday, home, and school measurements in Data Storage. |
| Byte | B | si | 1 B = 8.000000 b | Everyday, home, and school measurements in Data Storage. |
| Kilobyte (10³) | KB | si | 1 KB = 8,000.000000 b | Everyday, home, and school measurements in Data Storage. |
| Megabyte (10⁶) | MB | si | 1 MB = 8,000,000.000000 b | Everyday, home, and school measurements in Data Storage. |
| Gigabyte (10⁹) | GB | si | 1 GB = 8,000,000,000.000000 b | Everyday, home, and school measurements in Data Storage. |
| Terabyte (10¹²) | TB | si | 1 TB = 8,000,000,000,000.000000 b | Everyday, home, and school measurements in Data Storage. |
| Petabyte (10¹⁵) | PB | si | 1 PB = 8,000,000,000,000,000.000000 b | Everyday, home, and school measurements in Data Storage. |
| Kibibyte (2¹⁰) | KiB | binary | 1 KiB = 8,192.000000 b | Everyday, home, and school measurements in Data Storage. |
| Mebibyte (2²⁰) | MiB | binary | 1 MiB = 8,388,608.000000 b | Everyday, home, and school measurements in Data Storage. |
| Gibibyte (2³⁰) | GiB | binary | 1 GiB = 8,589,934,592.000000 b | Everyday, home, and school measurements in Data Storage. |
| Tebibyte (2⁴⁰) | TiB | binary | 1 TiB = 8,796,093,022,208.000000 b | Everyday, home, and school measurements in Data Storage. |
In the early computing era, programmers adopted kilo (1000) to approximate 2¹⁰ = 1024. In 1998, the IEC introduced KiB, MiB, GiB to eliminate ambiguity with decimal metric SI prefixes.
Always verify if a specification refers to decimal Gigabytes (GB) or binary Gibibytes (GiB).
Storage drive makers use decimal (500,000,000,000 bytes). Windows calculates in binary gibibytes (divided by 1024³ = 1,073,741,824), which equals 465.66 GiB.
There are exactly 8 bits in 1 Byte. Storage is measured in Bytes (B), while network speeds are measured in bits (b).
Every calculation uses trusted, standard definitions so your results are 100% accurate for school, home, work, and recipes.
