Basil Leaves Calories & Nutrition Calculator

Fresh basil has 23 kcal per 100g — but 100g of basil is an enormous quantity. A single fresh basil leaf weighs approximately 0.5g, meaning 100g equals roughly 200 leaves or about 4 packed cups. In practical cooking, a generous garnish uses 5–10 leaves (2.5–5g), and even a basil-heavy recipe like pesto uses only 50–60g (about 2 packed cups) ^[1].

This makes per-100g nutrient data misleading for fresh basil. At typical serving sizes of 2–5g, fresh basil contributes approximately 0.5–1.2 calories, 0.1–0.2g protein, and negligible fat or carbs. For most nutrition journals, fresh basil as a garnish can be logged as zero calories without meaningful tracking error.

The exception is when basil is a primary ingredient rather than a garnish — specifically in pesto, where 50–60g of basil is blended with olive oil, pine nuts, and cheese. In pesto, the basil contributes about 12–14 calories of the roughly 80–100 calories per tablespoon. The oil and nuts dominate the calorie profile.

Fresh basil is approximately 92% water. Drying removes nearly all that water, concentrating every nutrient by roughly 10x by weight. This explains the dramatic-looking numbers for dried basil: 233 kcal, 23g protein, 37.7g fiber, and 89.8mg iron per 100g — all of which are simply the fresh basil's nutrients concentrated into one-tenth the weight ^[2].

However, dried basil is used in pinch-sized quantities. A teaspoon of dried basil weighs about 1.4g and contains: 3.3 calories, 0.3g protein, 0.5g fiber, and 1.3mg iron. Even a generous tablespoon (4.5g) delivers only 10.5 calories. The nutrient density is theoretically high, but the practical contribution depends entirely on the tiny serving sizes.

For food journal accuracy, dried basil and fresh basil are not interchangeable by weight. The standard substitution ratio is 1 tsp dried = 1 tbsp fresh (by volume), which translates to roughly 1.4g dried ≈ 5g fresh. Both contribute negligible calories when used as a seasoning.

Sweet basil (Ocimum basilicum), the most common variety in Western cuisine, has 23 kcal and 3.15g protein per 100g fresh. Holy basil or tulsi (Ocimum tenuiflorum), central to Indian tradition, has a slightly higher calorie count at approximately 25 kcal per 100g with a different essential oil composition dominated by eugenol rather than linalool ^[3].

Thai basil (Ocimum basilicum var. thyrsiflora) has a nutrient profile similar to sweet basil but contains different aromatic compounds (primarily estragole). Its leaves are sturdier and hold up better in cooked dishes, while sweet basil is typically added fresh. The calorie and macronutrient differences between all three are minimal at typical serving sizes.

For nutrition journaling purposes, the variety of basil barely matters calorically — 5 leaves of any type contribute roughly 1 calorie. The distinction matters more for recipe accuracy: holy basil used in Indian cooking (tulsi chai, tulsi in dal) is logged differently from sweet basil garnishing a caprese salad, because the accompanying ingredients differ dramatically.

Dried basil contains 37.7g dietary fiber per 100g — one of the highest fiber concentrations among dried herbs. For comparison, dried oregano has 42.5g, dried thyme has 37.0g, and ground cinnamon has 53.1g per 100g. Dried parsley has 26.7g ^[2].

This fiber density is academically interesting but practically insignificant at typical serving sizes. A teaspoon of dried basil (1.4g) delivers 0.5g fiber — about 2% of the Daily Value. Even using a full tablespoon adds only 1.7g fiber. You'd need to consume roughly 70 teaspoons (98g) of dried basil to reach the daily recommended fiber intake.

The takeaway for food journaling: dried herb fiber contributions are negligible in any single dish. If you're tracking fiber closely, the vegetables, grains, and legumes in your meal contribute 95–99% of total fiber. Logging dried basil's fiber is technically correct but practically unnecessary.

A typical basil garnish of 5g (about 10 leaves) contributes: 1.2 kcal, 0.16g protein, 0.13g carbs, 0.03g fat, 0.08g fiber. For all practical tracking purposes, this is zero. The calorie impact of basil as a garnish is statistically insignificant compared to the 2,000+ calories in a typical daily intake ^[1].

The only scenario where basil calories matter is in pesto, where 50–60g of basil contributes about 12–14 calories — still minor compared to the olive oil (240–480 kcal for 2–4 tbsp), pine nuts (180–270 kcal for 30–45g), and parmesan (55–85 kcal for 15–25g) that make up the rest. A standard pesto recipe yields about 120–150g and contains 600–900 total calories, of which basil accounts for less than 2%.

For food journal simplification: fresh basil as a garnish can be omitted from tracking without meaningful accuracy loss. Fresh basil as a pesto ingredient should be included for completeness but contributes minimal calories. Dried basil as a seasoning is negligible. Focus your tracking effort on the oils, cheeses, and nuts that accompany basil in recipes.