Calculate carbs from energy, activity, and goals. Review daily grams, meal targets, and calorie contribution. Make nutrition planning simpler with clear outputs and graphs.
The graph distributes daily carbohydrates equally across your selected eating occasions.
| Profile | Age | Weight | Activity | Goal | Calories | Carb Method | Total Carbs | Per Meal |
|---|---|---|---|---|---|---|---|---|
| Example A | 30 | 70 kg | Moderately active | Maintenance | 2400 kcal | 50% calories | 300 g/day | 75 g over 4 meals |
| Example B | 42 | 82 kg | Lightly active | Fat loss | 2100 kcal | 3.0 g/kg | 246 g/day | 61.5 g over 4 meals |
| Example C | 25 | 60 kg | Very active | Endurance fueling | 2800 kcal | 5.5 g/kg | 330 g/day | 66 g over 5 meals |
Male: BMR = (10 × weight in kg) + (6.25 × height in cm) − (5 × age) + 5
Female: BMR = (10 × weight in kg) + (6.25 × height in cm) − (5 × age) − 161
TDEE = BMR × activity factor
Target calories = TDEE × goal multiplier, unless you provide a custom calorie target.
Percentage method: Carb grams = (target calories × carb %) ÷ 4
Body-weight method: Carb grams = weight in kg × selected g/kg
Fixed method: Carb grams = entered grams
Net carbs = total carbs − fiber grams
Per eating occasion = total carbs ÷ eating occasions
It estimates daily carbohydrate grams, carbohydrate calories, grams per eating occasion, net carbs after fiber, and body-weight-based fueling ranges.
Percentage works well for general planning. Grams per kilogram suits athletes or goal-focused nutrition. Fixed grams helps when a clinician or meal plan already provides a target.
Higher activity raises estimated energy expenditure and often increases carbohydrate demand for training, recovery, and performance.
Not always. Some plans focus on total carbs, while others monitor net carbs by subtracting fiber. Follow the method that matches your nutrition strategy.
It can help with planning, but insulin dosing, medication timing, and glucose responses require personalized medical guidance.
That usually happens when fixed grams or g/kg produce a higher value than your total calorie allowance can support. Adjust the inputs for better balance.
It is a practical estimate based on a standard equation. Real energy needs vary with genetics, body composition, hormones, health conditions, and training load.
Yes. Choose a lower percentage or fixed grams for low-carb planning, or raise g/kg for more intensive endurance fueling strategies.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.