A kilocalorie is a non- SI unit of energy of one thousand (small) calories and 1 (large) Calorie. The term kilocalorie is more accurate to indicate the nutritional or food calorie which is known simply as a calorie. It is also equal to 4.1868 megajoules. You can convert Kilocalories to other units here by enter amount of if into green input below. You can also check some basic conversions in Kilocalories Conversion Table.