20 calorie equal to Share with your friends Share 0 Manasa Hegde answered this Dear Student, 1 calorie = 4.184 J 20 Calorie = 83.68 J Regards, 0 View Full Answer Abhishek Kumar answered this 83680 J -1 Snehansh answered this The equation would be one calorie =4.2 joules So,20 calories =20*4.2=84 Joules would be the answer 0 Sadhika answered this Tq for u r answers 0 Sk Ariyan answered this 1 calorie= 4.184 joules 20 calories = (20?4.184) joules 1