- Protein
- 100 g/day
- Carbohydrate
- 250 g/day
- Fat
- 66.67 g/day
How it works
Same percentage, different carbohydrate grams
At 50% carbohydrate, a 2,000 kcal scenario gives 250 g, while 2,400 kcal gives 300 g. A larger gram amount can reflect more total energy without changing the carbohydrate share.
Reading carbohydrate grams in context
Carbohydrate grams depend on the energy target and distribution entered in the selected mode. If the target comes from an activity-based estimate, uncertainty in that estimate also affects the carbohydrate result. Compare amounts using the same daily time period. The calculation translates an energy allocation into grams; it does not evaluate food quality, blood-glucose response, or a personal treatment plan.
Daily macronutrients: formula and assumptions
Protein and carbohydrate supply about 4 kcal/g; fat supplies about 9 kcal/g.
The entered percentages must total 100%. These are planning quantities, not a prescribed diet.
From body measurements & activity: formula and assumptions
Maintenance energy=BMR×activity factor. Adult AMDR: carbohydrate 45–65%, fat 20–35%, protein 10–35% of energy; grams divide kcal by 4, 9, and 4 respectively.
The adjustment is an explicit scenario, not a prediction of weight change. Ranges are independent population references and their endpoints are not intended to be combined into a single diet. For adults; excludes pregnancy, breastfeeding, children and individualized medical nutrition care.
Worked example
Using the Daily macronutrients example:
- Daily energy target (kcal)
- 2000
- Protein share (%)
- 20
- Carbohydrate share (%)
- 50
- Fat share (%)
- 30
Protein and carbohydrate supply about 4 kcal/g; fat supplies about 9 kcal/g.
Example result
Protein: 100 g/day
Carbohydrate: 250 g/day
Fat: 66.67 g/day
These are illustrative inputs. Change the values to explore a different scenario.
Formula references
- USDA Dietary Guidelines (opens in a new tab)
- Mifflin et al.: resting energy expenditure (opens in a new tab)
- National Academies: Dietary Reference Intakes for macronutrients (opens in a new tab)
References explain the underlying methods; they do not imply endorsement or individual professional review of Finflo.
Common questions
How are carbohydrate calories converted to grams?
The model divides energy allocated to carbohydrate by approximately 4 kcal per gram.
Is the calculated carbohydrate amount an individual dietary prescription?
No. It is a planning quantity or adult reference range, not individualized advice for medical conditions, pregnancy or growing children.
Prepared by Finflo. See our methodology and editorial policy. Read the relevant professional-advice limitations.