I’m afraid I’m no longer quite sure what your desired outcome is. Is it that your database stores measurements in bytes/second, but you’d like to display bits/second? It would be great to know for sure what the unit is of the values stored in your database, because otherwise we’re just stabbing in the dark.
Grafana will not convert from bits to bytes or vice versa - you would need to do that in your query (as @pooh previously suggested).
What Grafana does do is show you human-readable scaling by moving the decimal point and adding a “kilo-”, “mega-”, “giga-”, etc, prefix as appropriate. E.g. if your database contains the value 7860000 and you select the unit “bytes/sec” (because that’s the unit of the value in your database), what Grafana will show is “7.86 MiB/s”.
I hope that makes sense.