The calculator uses two linear relationships: dividing total energy in a batch by the number of equal servings, or multiplying per-serving energy by the count of servings. Both are standard when portions are uniform.

Accuracy tips

Garbage in, garbage out: your total recipe calories must reflect what you actually cooked—oils, butter, sauces, and drinks all count if they are part of the dish you are splitting.

• Round ingredients consistently to match your recipe software.
• Re-weigh yield after cooking if moisture loss is large and you track by weight.
• Use our calorie density calculator when you need calories per gram.

Sources & references