Convert Bits to Gigabits
Convert Bits (b) to Gigabits (Gbit) instantly and accurately.
Conversion Formula
Gbit = b × 1.000000000e-9
About Bits
The bit (b) is the fundamental unit of digital information - a single binary digit: 0 or 1. Coined by John Tukey in 1948; formalised by Claude Shannon. Physically realised as transistor states (SRAM/DRAM), magnetic domains (HDD), charge levels in NAND flash (MLC=2, TLC=3, QLC=4 bits per cell). Shannon entropy: a coin flip = 1 bit; a card drawn from a 52-card deck ≈ 5.7 bits. 1 bit = 1/4 nibble = 1/8 byte.
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.
Quick Reference Table
| Bits (b) | Gigabits (Gbit) |
|---|---|
| 1 b | 1 × 10-9 Gbit |
| 2 b | 2 × 10-9 Gbit |
| 5 b | 5 × 10-9 Gbit |
| 10 b | 1 × 10-8 Gbit |
| 25 b | 2.5 × 10-8 Gbit |
| 50 b | 5 × 10-8 Gbit |
| 100 b | 1 × 10-7 Gbit |