Convert Gigabits to Kilobytes

Convert Gigabits (Gbit) to Kilobytes (KB) instantly and accurately.

Gigabits (Gbit)
Kilobytes (KB)

Conversion Formula

KB = Gbit × 125000

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 Kilobytes

A kilobyte (KB) = 1,000 bytes (SI). Used by all storage manufacturers (HDD, SSD, USB, SD) and endorsed by the IEC and FTC. Typical sizes: plain-text email 2-5 KB; HTML page 10-100 KB; Word document 10-30 KB. Ethernet MTU = 1,500 bytes ≈ 1.5 KB; jumbo frames 9 KB. MP3 at 128 kbit/s = 16 KB/s of audio. 1 KB = 1,000 bytes = 8,000 bits.

Quick Reference Table

Gigabits (Gbit)Kilobytes (KB)
1 Gbit125000 KB
2 Gbit250000 KB
5 Gbit625000 KB
10 Gbit1250000 KB
25 Gbit3125000 KB
50 Gbit6250000 KB
100 Gbit12500000 KB

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