Generally speaking, 1 kilocalorie = 1000 calories (definition here).
But the confusing part is explained here:
The energy used in physical activity and the energy stored in foods is actually given in kilocalories (the heat energy required to raise the temperature of one kilogram of water by one degree Celsius). Often kilocalories are referred to as kcals or as large calories or as Calories, where the capital ‘C’ indicates kilocalories. However, because a calorie is such a small unit of energy the word ‘calorie’ to define a small calorie is mainly used in scientific literature. Most of the time ‘calorie’ spelled with the small ‘c’ actually refers to the kilocalories provided in food and used during exercise. (you can read about it more here)
So, the answer is, in your case, "calorie" means the same as "Kcal" or "Kilocalorie".