A typical single-patty cheeseburger has about 300 calories.

Quick Scoop

For a standard, fast-food–style cheeseburger (single patty, bun, cheese, basic condiments), most nutrition databases and guides land in roughly the same zone:

  • Per 1 small/standard cheeseburger (about 90–110 g): 280–320 calories.
  • Per 100 g of cheeseburger: about 300–310 calories.

So if you just want a practical number to keep in mind, you can treat a regular cheeseburger as ≈300 calories.

What changes the calorie count?

Depending on the size and add‑ons, the calories can climb fast:

  • Small / kids cheeseburger: around 250–280 calories.
  • Standard single patty: typically 290–350 calories.
  • Double cheeseburger: roughly 430–550 calories.
  • Big “gourmet” or restaurant burgers with extra cheese, bacon, sauces: often 700–1,200+ calories.

A simple way to picture it:

  • Patty (¼ lb cooked): ~230 calories.
  • Slice of cheese: ~80–110 calories.
  • Bun: ~200–240 calories.
  • Lettuce, tomato, pickles: very few calories.

Add those together and you end up right in that ~300–400 calorie range for a modest cheeseburger, and much higher if you scale everything up. TL;DR: For tracking or quick mental math, assume a regular cheeseburger = ~300 calories , and add more if it’s large, has extra patties, bacon, or lots of sauce.

Information gathered from public forums or data available on the internet and portrayed here.