Convert Megabits to Kilobytes
Convert Megabits (Mbit) to Kilobytes (KB) instantly and accurately.
Conversion Formula
KB = Mbit × 125
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 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
| Megabits (Mbit) | Kilobytes (KB) |
|---|---|
| 1 Mbit | 125 KB |
| 2 Mbit | 250 KB |
| 5 Mbit | 625 KB |
| 10 Mbit | 1250 KB |
| 25 Mbit | 3125 KB |
| 50 Mbit | 6250 KB |
| 100 Mbit | 12500 KB |