Convert Megabits to Gigabits
Convert Megabits (Mbit) to Gigabits (Gbit) instantly and accurately.
Conversion Formula
Gbit = Mbit × 0.001
About Megabits
A megabit (Mbit) = 1,000,000 bits (SI). Everyday unit for broadband speeds: ADSL2+ up to 24 Mbit/s; VDSL2 up to 100 Mbit/s; GPON fibre 100-10,000 Mbit/s; 5G NR 100-400 Mbit/s. Streaming: Netflix 1080p = 5 Mbit/s; 4K HDR = 15-25 Mbit/s. Wi-Fi 7 = 46,120 Mbit/s theoretical. ISP 'Mbps' = megabits/s; 'MB/s' (megabytes) is 8× larger. 1 Mbit = 1,000,000 bits = 125,000 bytes.
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
| Megabits (Mbit) | Gigabits (Gbit) |
|---|---|
| 1 Mbit | 0.001 Gbit |
| 2 Mbit | 0.002 Gbit |
| 5 Mbit | 0.005 Gbit |
| 10 Mbit | 0.01 Gbit |
| 25 Mbit | 0.025 Gbit |
| 50 Mbit | 0.05 Gbit |
| 100 Mbit | 0.1 Gbit |