Convert Gigabytes to Bytes
Convert Gigabytes (GB) to Bytes (B) instantly and accurately.
Conversion Formula
B = GB × 1000000000
About Gigabytes
A gigabyte (GB) = 10⁹ bytes (SI). All consumer HDDs, SSDs, SD cards, USB drives, and smartphones advertise in GB. Media sizes: 4K Blu-ray 66-100 GB; 4K Netflix film 10-15 GB; modern AAA PC game 50-200 GB; Google Maps offline country data 5-30 GB. The IBM 350 RAMAC (1956) stored 0.00000375 GB; a Seagate Exos 20 TB holds 20,000 GB - 5.3-million-fold increase in 66 years. 1 GB = 10⁹ bytes = 1,000 MB.
About Bytes
The byte (B) is the fundamental addressable memory unit - 8 bits, 256 values (0-255). Standardised by the IBM System/360 (1964). UTF-8 encodes ASCII in 1 byte; Unicode in 1-4 bytes. One byte = 1 ASCII character, 1 RGB channel value, 1 PCM audio sample (8-bit). All mainstream CPU architectures (x86-64, ARM64, RISC-V) increment addresses by 1 byte. 1 byte = 8 bits = 2 nibbles.
Quick Reference Table
| Gigabytes (GB) | Bytes (B) |
|---|---|
| 1 GB | 1000000000 B |
| 2 GB | 2 × 109 B |
| 5 GB | 5 × 109 B |
| 10 GB | 1 × 1010 B |
| 25 GB | 2.5 × 1010 B |
| 50 GB | 5 × 1010 B |
| 100 GB | 1 × 1011 B |