How many calories do you normally burn at the gym?

I've been going to the gym 3-5 times a week now for several months. I usually burn between 450-500 calories each time I go. I usually do a lot of cardio, elliptical, treadmill, bike or I will do one of those & the weight machines. I'm usually there 1.5 hours to 2 hours each time. Just curious what others are averaging.

I don't go to a gym but run regularly with my Garmin & HRM. Statistically, machines overestimate calories burned - for running, rule of thumb is usually 100 cal for every mile. However, as you get cardiovascularly fit, that decreases; I average around 50-60 cals for every 1 mile, and I average around a 9:30-10 min/mile pace.

I normally go a little over 6 miles on the elliptical & a little over 3 miles on the treadmill. Thanks for the info. It helps me to see what other's are doing. I've actually come to enjoy going to the gym.

I walk either at the gym or home from work from the van pool.  I normally get in about 300 calories. 

Now that it is warmer & there is no snow on the ground I should consider walking or biking to & from work too.

I go usually about 4-6 days per week and loss around 600-800 calories at a time!!!

I only credit myself with about 200 calories for my gym workout.

I only know what the whole FitBit reading is for the day, so I don't know what is attributed to a workout.

I average about 450 - 500 calories for a 45 min run :) about 4 miles.