I'm sitting down most of the day, BUT I exercise pretty much every day. Three times a week it's interval training on the treadmill followed by a brisk walk (one hour total), and the other three times a week is about one hour of strength training (and I make sure I use weights heavy and intensity levels high enough so that I can only finish the last rep, with good form).
So will it be safe to say that my activity level is 'moderate'? Most calorie calculators I've seen tie in your day-to-day routine with exercise (aka, a desk job = little to no exercise), which may not always be the case.
I'm using a Total Energy Expenditure calculator to help determine my appropriate calorie intake (because you can input your levels sitting, sleeping, and exercise, etc separately) but I'm still a bit unsure. If the calculators are accurate, my calorie intake should be 1500-1700, but I'm sticking to 1400 to be on the safe side.