Convert Megabit per Second to Gigabyte (Mbps → GB)

Converting megabits per second to gigabytes is straightforward: multiply by the conversion factor. Follow these three steps to do it by hand or in your head.

1. 1
   Take your value in megabits per second

   Start with the number of megabits per second (Mbps) you want to convert.
2. 2
   Multiply by 0.000125

   The conversion factor from Mbps to GB is 0.000125. Multiply your value by this number.
3. 3
   Read the result in gigabytes

   The result is your value in gigabytes (GB).

Multiply the value in megabits per second by 0.000125. For the reverse direction, multiply by 8,000.

• ✓1 Mbps = 1,000,000 bits/s = 125 kB/s.
• ✓Divide Mbps by 8 to get MB/s approximate.
• ✓Real-world speeds are usually 50–80% of advertised peak.

• ✗Expecting 100 Mbps to deliver 100 MB/s — 8× overstatement.
• ✗Confusing Mbps (bits) and MBps (bytes) — capitalisation matters.
• ✗Comparing Wi-Fi speed (theoretical) with actual throughput.

What is the Megabit per Second?

Megabits per second (Mbps) is the standard unit for internet speeds, network bandwidth, and ISP connection ratings. Note: Mbps is megabits, not megabytes — the ratio is 8 bits per byte, so 100 Mbps = 12.5 MB/s download speed. Modern broadband home connections typically offer 100–1,000 Mbps download speeds, fiber-optic connections reach 1,000–10,000 Mbps (1–10 Gbps), and mobile 5G networks deliver 100–1,000+ Mbps. Internet streaming services recommend minimum speeds: HD video needs about 5 Mbps, 4K video needs 25 Mbps, and competitive online gaming benefits from 30+ Mbps with low latency. The Mbps relates to the megabyte per second (1 Mbps = 0.125 MB/s), the gigabit per second (1 Gbps = 1,000 Mbps), and the kilobit per second (1 Mbps = 1,000 kbps). The ITU and IEEE standardize network protocols using Mbps and multiples.

• Internet broadband speed advertising
• Network interface card ratings (1 Gbps NIC)
• Wi-Fi throughput specifications

What is the Gigabyte?

The gigabyte (GB) equals 1,000 megabytes (1,000,000,000 bytes decimal, or 1,073,741,824 bytes as GiB binary) and is the standard unit for smartphone storage, mobile data plans, and modern application sizes. Modern smartphones offer 64–1,024 GB of storage, mobile data plans range from 1 to 50+ GB per month, and operating-system installations typically require 20–80 GB. A 4K video stream consumes 6–8 GB per hour, and a typical app download is 50–500 MB to a few GB. The famous discrepancy between manufacturer-advertised capacity (GB decimal) and operating-system-displayed capacity (GiB binary) means a '1 TB' drive shows about 931 GB to the user. The gigabyte relates to the megabyte (1,000 MB = 1 GB), the terabyte (1,000 GB = 1 TB), the gibibyte (1 GiB = 1.074 GB), and the gigabit (1 GB = 8 Gbit).

• Phone and device storage
• Mobile-data plan allowances
• Memory (RAM) sizes