One kilogram of human body fat stores about 7,700–8,000 kilocalories, based on adipose tissue’s fat content and energy density.

One typical chain cheese slice has about 285 kilocalories, and toppings or style can push a slice near 300–400 kilocalories.

One gram of ethanol supplies 7 kilocalories; a U.S. standard drink (14 g) delivers about 98 kilocalories from alcohol alone.

One large chicken egg contains about 72–78 kilocalories; size and cooking change the total.

One medium raw apple (182 g) contains about 95 kilocalories; per 100 g, it’s ~52 kilocalories.

One medium banana (118 g) provides about 105 kilocalories; smaller or larger fruit ranges from roughly 72–135 kcal.

Most adults burn 1,600–3,000 kilocalories per day, depending on size, age, sex, and activity level.