Cost to keep equipment running / on


I know I could probably figure this out with a little math but wondering if anyone has already done the work.  I'm wondering how much it's costing me to leave my equipment running.  Here is the main equipment that I'm leaving on 24 hours / day.

2 SVS SB subbwoofers (not on standby, always on)
Marantz av7500 processor
Anthem PVA7 7 channel amp
2 PS Audio M700 amps

I figure the subs might be pulling alot of juice even when not in use and probably the Anthem PVA7 amp as it's class A/B I believe.

I'm in the Dallas area and I'm paying about 12.5c per kwh I believe.  

Just looking for ballpark numbers as my bill is definitely higher than I feel it should be.
dtximages
12" of sea level rise, 300 billions tons of ice sheet loss, and 500 dead kittens ... 🤣😂

It’s easy enough just to measure as fuzztone suggested. My equipment consume around 180watt whether playing or not (all class A).
@hilde45 thanks for the site. Yeah none of those are sucking that much energy.  I guess mine is all the AC then.  

Yes i know it's "easy enough" to get the tool to calculate the energy usage but I have better things to do with my time than figuring it out and assuming I'm calculating it all correctly. 

I just wanted a ballpark idea.. It seems like it's not a material issue for anyone on here so I won't worry about it.