Work out daily carbohydrate grams from a calorie target and your chosen carb percentage.
Usage Tip
Favour whole-food carbohydrate sources for steadier energy and more fibre.
How many carbs do I need?
There is no single number – it depends on your calories, activity and goals. General dietary guidelines (the Acceptable Macronutrient Distribution Range) put carbohydrate at 45–65% of daily calories. At 2,000 kcal that is roughly 225–325 g a day. Lower-carb and ketogenic approaches deliberately go below that, while endurance athletes often go above it.
Carb intake recommendation chart
| Approach | % of calories | Grams at 2,000 kcal |
|---|---|---|
| Low carb / weight loss | 20–35% | 100–175 g |
| Moderate / general health | 45–55% | 225–275 g |
| High / very active | 55–65% | 275–325 g |
| Endurance athlete | 60–70%+ | 300 g+ |
Low, moderate and high carb compared
| Level | Carbs per day | Typical use |
|---|---|---|
| Keto (very low) | 20–50 g | Ketogenic diets |
| Low carb | 50–130 g | Weight management |
| Moderate | 130–250 g | General health |
| High | 250 g+ | Active people and athletes |
Carbs for weight loss
For fat loss, total calories matter most, but lower carbohydrate can make a deficit easier by steadying appetite and energy. A common range is 20–35% of calories. Keep protein high to protect muscle, and favour fibre-rich, whole-food carbs that keep you full.
Carbs for muscle gain
Building muscle is easier with plenty of carbohydrate: it fuels hard training and helps spare protein for repair. In a calorie surplus, 50–60% of calories from carbs is a sensible starting point, adjusted to training volume.
Carbs for athletes
Endurance and high-volume athletes have the highest needs – often 5–10 g of carbohydrate per kg of body weight per day, rising further around long or intense sessions. Carbohydrate refills muscle glycogen, the main fuel for sustained effort.
Net carbs explained
Net carbs are the carbohydrates your body actually digests and absorbs as glucose. The usual formula is total carbohydrate minus fibre (and minus some sugar alcohols), because fibre passes through largely undigested and has little effect on blood sugar. Low-carb and keto dieters often track net carbs rather than total.
Net carbs vs total carbs
Total carbohydrate is the full amount listed on a nutrition label. Net carbs subtract fibre from that total. For example, a food with 20 g total carbs and 8 g fibre has about 12 g net carbs. Use the net-carb tool in the calculator above to work this out for any food.
Simple vs complex carbs
Simple carbs (sugars) digest quickly and can spike blood sugar; complex carbs (starches and fibre, found in whole grains, legumes and vegetables) digest more slowly for steadier energy. Both count toward your total, but most of your carbs are best coming from whole-food, complex sources.
Carb timing
For general health, total daily intake matters more than timing. If you train, it can help to place more of your carbs around workouts – some before for energy and some after for recovery – while spreading the rest across your meals.
Pre-workout
Eat easily digested carbs 1–4 hours before training to top up energy – the closer to the session, the smaller and simpler the snack.
Post-workout
Carbs with some protein after training help refill muscle glycogen and support recovery, which matters most after long or intense endurance work.
Common carb myths
- “Carbs make you fat.” Excess calories cause fat gain, not carbs themselves.
- “No carbs after 6pm.” Total daily intake matters far more than the clock.
- “All carbs are bad.” Whole-food carbs supply fibre, vitamins and steady energy.
- “You must cut carbs to lose weight.” A calorie deficit drives fat loss; low-carb is one way to get there, not the only one.
Printable carb intake chart
| % of calories | 1,500 kcal | 2,000 kcal | 2,500 kcal |
|---|---|---|---|
| 20% | 75 g | 100 g | 125 g |
| 30% | 113 g | 150 g | 188 g |
| 40% | 150 g | 200 g | 250 g |
| 50% | 188 g | 250 g | 313 g |
| 60% | 225 g | 300 g | 375 g |