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Data Transfer Speed

Convert between Mbit/s and MB/s, and estimate how long a download takes

Speed
Unit
Converted
  • bit/s100,000,000
  • kbit/s100,000
  • Mbit/s100
  • Gbit/s0.1
  • B/s12,500,000
  • KB/s12,500
  • MB/s12.5
  • GB/s0.0125
1 GB takes about1 m 20 s· Mbit/s

Carriers sell bits per second (100 Mbit/s) while download managers show bytes (about 12.5 MB/s) — an 8× difference. Everything here uses decimal prefixes to match how bandwidth is advertised; with binary prefixes, 100 Mbit/s is roughly 11.9 MiB/s.