The number of calories burned during a two-hour workout at the gym can vary depending on several factors, including your weight, intensity of exercise, and the specific activities you engage in. It’s difficult to provide an exact number without knowing these specific details. However, here are some estimated calorie expenditure values for various activities based on average weight:

– Weightlifting (moderate intensity): Approximately 180-266 calories per hour.

– Running on a treadmill (moderate intensity, 10-minute mile pace): Approximately 500-800 calories per hour.

– Stationary bike (moderate intensity): Approximately 315-420 calories per hour.

– Elliptical trainer (moderate intensity): Approximately 420-630 calories per hour.

– High-intensity interval training (HIIT): Depending on the intensity, HIIT workouts can burn a significant number of calories, ranging from 400-800 calories or more per hour.

Please note that these are rough estimates and individual calorie expenditure may vary. The best way to get a more accurate estimation of your calorie burn during a specific workout is by using devices such as heart rate monitors or fitness trackers that incorporate your personal information and heart rate data into their calculations.