How to Calculate Calories in a Recipe (Free Calculator)
July 16, 2026
Learning how to calculate calories in a recipe is simpler than it looks: total the calories of each ingredient, then divide by the servings. This guide walks you through it, and our free tool does the maths for you.
How to calculate calories in a recipe step by step
- List every ingredient with its amount.
- Find the calories for each (per 100 g, or per unit).
- Convert amounts to grams and total the calories.
- Divide by the number of servings.
A quick worked example
| Ingredient | Amount | Calories |
|---|---|---|
| Flour | 200 g | 728 |
| Sugar | 150 g | 581 |
| Butter | 100 g | 717 |
| Eggs | 2 | 143 |
| Total (8 servings) | ~271 / serving |
Why calories per serving matter
Total calories mean little on their own – it is the per-serving figure that helps you plan. Cut the servings and each portion has more calories; increase them and each has fewer.
Do it automatically
Skip the maths with our free Recipe Calorie Calculator. Working in cups? Convert first with Cups to Grams.
For more on energy in food, see food energy.
Frequently asked questions
How do I calculate calories in a recipe? Add the calories of every ingredient, then divide by the number of servings.
Is it accurate? It is a close estimate; exact values vary by brand and portion.
Do I have to weigh everything? Weighing in grams is most accurate, but cups and spoons work too.