The calorie content of a hot dog varies depending on the size, type, and whether it includes a bun or toppings:

• A standard hot dog sausage alone typically contains about 120 to 170 calories. For example, a 57-gram beef and pork hot dog has around 120 to 170 calories

• Different brands and sizes vary: Ball Park (49g) has about 160 calories, Hebrew National (49g) about 150 calories, Hillshire Farm (76g) about 240 calories, and Nathan’s Famous (47g) about 150 calories

• Adding a bun increases the calories significantly. A typical hot dog with a bun contains approximately 290 to 314 calories

• Larger or jumbo hot dogs, or those with high-calorie additions like cheese or bacon, can have up to 300 or more calories each

• Low-fat or fat-free varieties can be as low as 100 calories per sausage

In summary, a plain hot dog sausage generally has around 120-170 calories, and with a bun and typical condiments, it usually ranges from about 290 to 314 calories. The exact number depends on the brand, size, and toppings used.