There are calorie calculators for daily intake all over the place. Here's one:
But those things are ball park estimates at best. If you're going to get serious about nutrition, then you need to weigh your food and calculate exactly how many calories you're taking in every day and then see how that affects your fat loss. For me, even a couple of hundred calories can make a difference, so estimating is useless.
On the other hand, there is no getting around calories in vs calories out and if you're not losing fat, you're eating too much and that's all there is to it.
Fat loss is 99% nutrition. Your cardio really is more about keeping your metabolism from falling than it is about fat burning during the workout. Low level steady state cardio is bullshit. High Intensity Interval Training is what you should be doing. Don't be fooled by the "best for fat burning" low level intensity crap. It's based on an incomplete knowledge of the situation.
Consider this - the amount of calories you burn in a workout is trivial compared to the calories you burn the other 23 hrs a day. HIIT will keep you burning calories when you're not working out and that's the real goal. As soon as you go into calorie deficit your body is going to try to keep you from starving to death by lowering your metabolism so that is what you need to fight. True fat loss isn't about the calories you burn in the gym. It's about the calories you burn outside the gym.