Find your daily carbohydrate target — minimum, recommended, and maximum grams — based on your calorie goal and diet style. Updates live as you type.
Results update live as you change values.
Recommended daily carbs
Minimum
248 g
Maximum
358 g
% of calories
45–65%
Calories from carbs
1,210 kcal
| Diet style | Carb % | Grams (your kcal) | Your pick |
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The Formula
Your daily carbohydrate target is a slice of your total calorie budget. We take the low and high percentage cut-offs for your chosen diet style, multiply by your daily calorie target, then divide by 4 — because carbs supply 4 kcal per gram.
The recommended value sits at the midpoint of that range. Adjust the calorie input or diet style and every number updates in real time.
Carb Formula
About This Tool
A carbohydrate calculator tells you how many grams of carbs to aim for each day to match your calorie target and dietary style. Carbs are the body's preferred energy source — particularly for the brain and high-intensity exercise — but the right amount varies widely from person to person.
The Acceptable Macronutrient Distribution Range (AMDR) from the Institute of Medicine recommends 45–65% of calories from carbs. Endurance athletes often push higher to fuel training; people pursuing fat loss or managing blood sugar may go lower with a low-carb or ketogenic approach.
This tool converts your chosen percentage range into precise gram targets based on 4 kcal per gram. You see a minimum, recommended, and maximum value side-by-side, plus the total calories those carbs supply — making it easy to plan meals against the rest of your macros.
Instant Live Results
Carbs in grams update the moment you change calories or diet style.
Min / Rec / Max
A full target band — not just a single number — so meal planning is flexible.
Four Diet Styles
Balanced, athletic performance, low-carb, and keto in one tap.
100% Free & Private
No account needed. All calculations run locally in your browser.
Backed by Guidelines
Uses AMDR ranges from the Institute of Medicine and Dietary Guidelines.
Pairs with Other Macros
Use alongside Protein and Fat calculators to build a complete plan.
Two inputs, four numbers — your daily carb plan in seconds.
Type your daily calorie goal. If you don't know yours, run the Calorie or TDEE calculator first — most adults land between 1,800 and 2,800 kcal.
Choose Balanced for everyday eating, Performance if you train hard, or Low carb / Keto for fat loss and blood-sugar control.
The Recommended value sits at the midpoint. Use Min/Max as a flexible window — most days should land between them.
A typical slice of bread is ~15 g, a cup of rice ~45 g, a medium banana ~27 g. Use these to map grams onto real meals.
Aim for 25–35 g fibre per day from whole grains, fruit, beans, and veg. Quality matters as much as quantity.
If energy, training, or weight aren't moving the way you want, change the diet style or calorie target and re-read the new range.
Everything you need to know about daily carbohydrate intake and how to use this tool.
The Dietary Guidelines for Americans recommend 45–65% of calories from carbs. On a 2,000-kcal diet that's 225–325 grams per day. Endurance athletes may need 6–10 g per kg of body weight; low-carb and keto plans deliberately go below this range.
Carbohydrates provide 4 kcal per gram, the same as protein and less than half of fat (9 kcal/g). Alcohol sits between them at 7 kcal/g. Fibre still counts as a carb on labels but contributes very few usable calories.
Low-carb plans typically cap carbs at 25–40% of calories — roughly 100–150 g per day on a 2,000-kcal diet. Stricter ketogenic protocols drop to 5–10% (about 20–50 g) to push the body into producing ketones for fuel.
Most people can use total carbs without issue. People doing strict keto often track net carbs (total − fibre − sugar alcohols) because fibre and most sugar alcohols don't meaningfully raise blood sugar.
Prioritise whole grains, oats, fruit, legumes, and vegetables. These deliver fibre, vitamins, and slow-digesting starches that keep blood sugar stable. Limit added sugars and refined-flour products — they spike blood sugar without lasting satiety.
Technically no — the body can produce glucose from protein and fat. But for most people some carbs improve energy, training performance, fibre intake, and adherence. Very-low-carb diets work well for some; they're not required for everyone.
For most people, even distribution works fine. Athletes often time more carbs around training — 1–4 hours before for fuel and within 1–2 hours after for recovery. Those targeting fat loss sometimes push carbs to the second half of the day to manage hunger.
The math is exact for the values you enter. Real-world carb needs depend on activity, body composition, and individual response. Use this as a starting point and adjust based on how you feel, train, and progress over 2–4 weeks.