Evidence-based nutrition, in plain English — every entry sourced from clinical research.

Low-carb eating means different things to different people, but it always starts with knowing which foods are naturally lowest in carbohydrate. Below is a data-backed ranking of the foods in our database with the least carbohydrate per 100 g.

Foods ranked by Carbohydrate per 100 g edible portion
#FoodCarbohydrate
1Chicken Breast0 g
2Cod0 g
3Coffee0 g
4Extra Virgin Olive Oil0 g
5Green Tea0 g
6Ground Turkey0 g
7Lean Beef (95% lean)0 g
8Mackerel0 g
9Pork Tenderloin0 g
10Rainbow Trout0 g
11Salmon (Atlantic)0 g
12Sardines0 g
13Tilapia0 g
14Tuna (canned, light)0 g
15Turkey Breast0.14 g
16Shrimp0.49 g
17Eggs0.72 g
18Cheddar Cheese2.13 g
19Mozzarella2.4 g
20Tofu2.78 g
21Cucumber2.95 g
22Courgette (Zucchini)3.11 g
23Scallops3.18 g
24Parmesan3.22 g
25White Mushrooms3.26 g

Meat, fish, poultry, eggs, oils and unsweetened drinks like coffee sit at or near zero, since carbohydrate is almost entirely a plant-food and dairy-sugar nutrient. If you’re building a lower-carb plate, these are your foundation; most non-starchy vegetables generally stay low too, while grains, legumes and fruit carry meaningfully more.

Why context matters more than the number alone

A “low-carb” food in isolation doesn’t tell you much about a whole diet — what you eat alongside it matters just as much. Many popular low-carb approaches pair these foundation foods with non-starchy vegetables and healthy fats rather than cutting carbohydrate to zero across the board.

Common questions

Is a low-carb diet the same as keto? Not quite — keto is a specific, very-low-carb approach designed to shift the body into ketosis, typically under 50g of carbs a day. “Low-carb” more broadly just means eating less than a typical diet, with much more flexibility on exactly where the line sits.

Do vegetables count as low-carb? Most non-starchy vegetables (leafy greens, peppers, broccoli, courgette) are genuinely low in carbohydrate. Starchy vegetables like potatoes, and grains and legumes, carry meaningfully more — useful to know if you’re tracking carbs closely.

Nutrition values are USDA FoodData Central approximations — see our editorial approach for how we source and verify data.