For medium-sized chapatis, with a diameter of around 18 cm each, the calorie count for two of them totals about 212 calories. However, if you're opting for a slightly smaller serving size, like 35 grams per roti, then two of those would account for approximately 184 calories. For those who enjoy larger chapatis, around 20 cm in diameter, a single one carries roughly 137 calories. And if you're looking at an extra-large wheat chapati, with a diameter of about 25 cm, the calorie count comes to around 185.