Convert Gigabits to Bytes
Convert Gigabits (Gbit) to Bytes (B) instantly and accurately.
Conversion Formula
B = Gbit × 125000000
About Gigabits
A gigabit (Gbit) = 10⁹ bits (SI). 1 Gbit/s Ethernet (1000BASE-T) is the enterprise baseline; 10/25/100/400 Gbit/s are data-centre standards. Bus speeds: PCIe 4.0 ×16 = 256 Gbit/s; Thunderbolt 4 = 40 Gbit/s; HDMI 2.1 = 48 Gbit/s. NVMe SSDs: PCIe 4 ≈ 57 Gbit/s; PCIe 5 > 112 Gbit/s. Submarine cables: 200 Gbit/s per wavelength × hundreds of wavelengths. 1 Gbit = 10⁹ bits = 125 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
| Gigabits (Gbit) | Bytes (B) |
|---|---|
| 1 Gbit | 125000000 B |
| 2 Gbit | 250000000 B |
| 5 Gbit | 625000000 B |
| 10 Gbit | 1.25 × 109 B |
| 25 Gbit | 3.125 × 109 B |
| 50 Gbit | 6.25 × 109 B |
| 100 Gbit | 1.25 × 1010 B |