[MalVeauX]

Heya,
 
If you're talking super loud and can't hear normal house sounds after you take off your headphones, you were listening too loud.
 
Very best,

 

[Supertoaster]

I think if you are worried enough about listening too loudly, you aren't listening loud enough to be dangerous.

 

[SgtPepper]

There are far too many variables to consider. Assuming a quiet environment, the best thing to do is to start out at just a tad lower than normal volume, and wait for your ears to adjust (usually a few minutes). You can then continue to lower the volume very slightly every few minutes.  You'll soon find that the volume you started out at is uncomfortably loud.