How many joules in a potato have?

The energy content of a potato can vary based on its size and type, but on average, a medium-sized potato (about 150 grams) contains roughly 100-130 calories. Since one calorie is approximately 4.184 joules, this translates to about 418-544 joules of energy in a medium potato. The exact value can vary depending on the potato's specific characteristics and preparation method.