Carb Calculator – Calculate Your Daily Carbohydrate Intake
This Carb Calculator helps you estimate how many carbohydrates you should eat each day based on your fitness goals, diet type, and activity level. Whether you're following a keto diet, a low-carb plan, or a balanced meal approach, this tool provides your optimal daily carb intake in grams and calories.
How to Use the Carb Calculator
Enter your age, weight, height, gender, goal (weight loss, gain, or maintenance), and activity level. Select your preferred diet type (keto, moderate-carb, or high-carb). The result shows:
- Daily carbohydrate needs (in grams)
- Percentage of calories from carbs
- Suggested net carbs for keto/low-carb plans
Carbohydrate Intake Guidelines
| Diet Type | % of Daily Calories from Carbs | Grams/Day (on 2000 cal) |
|---|---|---|
| Ketogenic (Very Low) | 5–10% | 20–50g |
| Low Carb | 10–25% | 50–130g |
| Moderate | 30–45% | 150–225g |
| High Carb | 50–65% | 250–325g |
Carb Calculation Formula
Daily Carbs (g) = (Calories × Carb %) ÷ 4
Since each gram of carbohydrate contains 4 calories, this formula helps determine how many grams to consume based on your calorie target and diet preference.
Why Use a Carb Calculator?
Carbs are your body's primary energy source. This calculator helps you align carb intake with your fitness goals — whether you want to lose fat, maintain energy for workouts, or support athletic performance. Especially useful for keto, diabetic, or performance-based diets.
Frequently Asked Questions (FAQs)
How many carbs should I eat per day?
It depends on your calorie needs and diet type. Low-carb diets aim for 50–130g/day, while standard diets can go up to 300g/day.
What are net carbs?
Net carbs = Total carbs – Fiber – Sugar alcohols. These are the digestible carbs that impact blood sugar.
Is this calculator good for keto?
Yes. It calculates very low-carb intake (20–50g/day) for ketogenic diets based on your calorie needs.
How are carbs different from calories?
Carbs are a macronutrient; calories measure total energy. 1 gram of carbs = 4 calories.
Can I use this for weight loss?
Yes. Lowering your carb intake (especially refined carbs) helps reduce overall calories and improve fat burning.
Related tools: Calorie Calculator, Macro Calculator, Protein Intake Calculator.