ntopng/doc/README.unit_rules_and_conventions.md

Data-rate units

According to the SI unit rules and style conventions, ntopng uses a solidus (i.e., slash) to signify the division of units.

ntopng uses data rate units that are multiples of bits per second (bit/s) and bytes per second (B/s). One byte consists of 8 bits, so that 1 Mbit/s (one million bits per second) is 0.125 MB/s (megabyte per second).

The abbreviation bps, although acceptable, is not used to mean bit/s in ntopng.