A low-carb diet generally means eating between 60 and 130 grams of carbohydrates per day. That’s well below the standard recommendation of 45% to 65% of total daily calories from carbs, which works out to roughly 225 to 325 grams on a 2,000-calorie diet. Where you land within that range depends on your goals, your activity level, and how your body responds.
The Three Tiers of Low Carb
There’s no single universal cutoff, but most nutrition guidelines break low-carb eating into a few distinct ranges. Understanding which tier you’re in helps set realistic expectations about what you’ll eat each day and what metabolic changes to expect.
Moderate low carb (100 to 130 grams per day): This is the gentlest reduction. You’re still eating fruit, some whole grains, and starchy vegetables, just in smaller portions. A clinical trial in patients with type 2 diabetes found that sticking to 130 grams per day for six months produced meaningful improvements in blood sugar control and body weight compared to a standard calorie-restricted diet. This level sits right at the minimum the body needs to fuel the brain entirely through glucose.
Low carb (60 to 100 grams per day): At this level, most refined grains and sugary foods are off the table, and you’re relying more heavily on vegetables, protein, and fat for calories. Many people find this range sustainable long term without feeling overly restricted.
Very low carb or ketogenic (under 50 grams per day): This is the threshold where your body shifts to burning fat as its primary fuel source, producing molecules called ketones to power the brain. Most ketogenic protocols cap carbs at 20 to 50 grams daily. Below 20 grams, your brain can no longer get enough energy from glucose alone and becomes heavily dependent on ketones.
What 130 Grams Actually Looks Like in Food
Numbers on paper don’t mean much until you see them on a plate. A single slice of bread, a third of a cup of cooked rice, one small apple, or half a large banana each contain about 15 grams of carbohydrates. So does a third of a cup of cooked pasta, a 6-inch tortilla, or three-quarters of a cup of blueberries.
At 130 grams per day, you could eat two slices of toast at breakfast (30 grams), a cup of cooked rice at lunch (45 grams), a small apple as a snack (15 grams), and a cup of pasta at dinner (45 grams), with room to spare. That’s a noticeable reduction from how most people eat, but it doesn’t require eliminating entire food groups.
At 50 grams per day, those same foods become almost impossible to fit. A single cup of cooked rice would eat up nearly your entire daily allowance. This is why ketogenic diets focus on meat, fish, eggs, nuts, cheese, and non-starchy vegetables like leafy greens, broccoli, and peppers, which are very low in carbs per serving.
Net Carbs vs. Total Carbs
When counting carbs, you’ll run into two different systems. Total carbs means every gram of carbohydrate in a food, including fiber. Net carbs subtracts fiber (and sometimes sugar alcohols) from the total, since fiber passes through the body without raising blood sugar.
The formula is simple: total carbohydrates minus fiber equals net carbs. Sugar alcohols, which are common in sugar-free products, also get subtracted because they have minimal effect on blood sugar. A food with 20 grams of total carbs and 8 grams of fiber would count as 12 net carbs.
This distinction matters most at the very-low-carb end. If your target is 20 to 50 grams, counting net carbs instead of total carbs gives you room for more vegetables and high-fiber foods. Many ketogenic plans use net carbs for this reason. At the moderate low-carb level of 100 to 130 grams, the difference between net and total is less critical because you already have more flexibility.
How to Pick Your Target
Your ideal range depends on why you’re reducing carbs in the first place. For general weight management or slightly better blood sugar control, 100 to 130 grams per day is a practical starting point that most people can maintain without dramatically overhauling their diet. It’s also the threshold supported by clinical evidence for improving blood sugar markers in people with type 2 diabetes.
If you’re aiming for ketosis, whether for weight loss, epilepsy management, or another reason, you’ll need to stay under 50 grams. This level requires more planning and typically means tracking your food intake closely, at least in the beginning. Most people find it harder to sustain socially and practically over long periods, though some adapt well.
Activity level plays a role too. If you exercise intensely or have a physically demanding job, your body burns through glycogen (stored carbs) faster, and you may function better at the higher end of the low-carb spectrum. Sedentary individuals often tolerate deeper carb restriction more comfortably because their glucose demands are lower.
One useful approach is to start at 100 to 130 grams for a few weeks, observe how you feel and how your body responds, then adjust downward if your goals call for it. Dropping straight to 20 grams from a typical diet of 250 or more grams can cause fatigue, headaches, and irritability in the first week as your metabolism adapts.