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French Beans Calories & Nutrition Calculator

Also known as: Green Beans, Snap Beans, String Beans, Phaseolus vulgaris, Haricots Verts, Fansi, Sem Phali, Beans Frasbi

Quick Answer — 1 cup (100g) raw French bean pieces

31kcalCalories
1.8gProtein
7gCarbs
0.2gFat
2.7gFiber
By Manish KumarData verified: 2026-05-15

Nutrition Calculator

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Steaming retains ~85–95% of nutrients — one of the best cooking methods for preservation.

43mcg Vitamin K per 100g Raw (36% DV) — French Beans Rank Among the Top Non-Leafy Sources of This Often-Overlooked Fat-Soluble Vitamin

Raw French beans deliver 43mcg vitamin K per 100g — 36% of the 120mcg daily value. This is unusually high for a non-leafy vegetable. For comparison, carrots have 13mcg, tomatoes have 8mcg, and bell peppers have 7mcg per 100g. Among green vegetables that aren't leafy greens, French beans are one of the richest vitamin K sources [1].

Cooking actually increases the concentration: boiled French beans have 47.9mcg vitamin K per 100g (40% DV) because mild water loss concentrates the fat-soluble vitamin. One cup of cooked French beans (125g) provides approximately 60mcg vitamin K — half the daily value from a single side dish.

For food journaling, vitamin K is French beans' most notable micronutrient contribution by daily value percentage. If tracking vitamin K intake, note that French beans pair well with a small amount of oil or butter — the fat supports absorption of this fat-soluble vitamin. Even 1 teaspoon of oil is sufficient.

Fiber Rises from 2.7g Raw to 3.2g Cooked per 100g — Among the Few Vegetables Where Boiling Concentrates Rather Than Depletes Dietary Fiber

Raw French beans have 2.7g fiber per 100g, but boiled and drained French beans have 3.2g per 100g — an 18% increase. This is the opposite of what happens in most vegetables: ash gourd drops from 2.9g to 1.0g, and broccoli stays flat at 2.6g. The increase occurs because French beans lose proportionally more water than fiber during cooking, concentrating the fiber per gram [1][2].

One cup of cooked French beans (125g) provides 4.0g fiber — 14% of the daily recommended 28g. The fiber is predominantly insoluble (from cell walls of the bean pods), giving cooked French beans their characteristic firm-tender texture that distinguishes them from softer vegetables.

For nutrition journaling, use the cooked fiber value (3.2g/100g) for stir-fries and boiled preparations. If eating French beans raw (in salads or as snacks), the fiber per gram is slightly lower at 2.7g/100g. Either way, French beans are a solid mid-tier fiber source — higher than most gourds but below legumes.

31 kcal Raw and 35 kcal Cooked per 100g — A Mid-Low Calorie Vegetable That Bridges the Gap Between Watery Gourds and Dense Legumes

French beans sit at 31 kcal per 100g raw — higher than cucumber (15 kcal), celery (16 kcal), and the gourd family (13–20 kcal), but significantly lower than peas (81 kcal), corn (86 kcal), or potatoes (77 kcal). Cooked French beans are 35 kcal per 100g — a modest 13% increase from water loss [1][2].

The calorie composition is 76% from carbohydrates, 19% from protein, and 5% from fat — a balanced vegetable profile. One cup of cooked French beans (125g) has approximately 44 kcal — roughly the energy in a single salted cracker. A generous 200g cooked serving contributes 70 kcal before oil or butter.

For food journaling, French beans are low enough in calories to be tracked loosely in most diets. A typical Indian sabzi using 200g French beans with 1 tablespoon oil totals approximately 190 kcal — the oil contributes 120 kcal (63%) while the beans contribute 70 kcal (37%).

Potassium Drops 31% After Boiling (211mg → 146mg) While Calcium Rises 19% (37mg → 44mg) — Opposite Mineral Journeys During the Same Cooking Process

Boiling French beans creates contrasting mineral changes: potassium drops 31% (211mg raw → 146mg cooked per 100g) while calcium increases 19% (37mg → 44mg). The potassium leaches into cooking water (as it does in most boiled vegetables), but calcium, being less water-soluble, concentrates as the beans lose moisture [1][2].

Manganese also concentrates: 0.22mg raw rises to 0.28mg cooked per 100g (a 27% increase). This means cooked French beans provide 12% of the daily manganese value per 100g — a notable contribution for a low-calorie vegetable. Iron, conversely, drops from 1.03mg to 0.65mg (a 37% loss).

For food journaling, if tracking potassium, use the raw value (211mg) for salads and the cooked value (146mg) for boiled/steamed preparations. If steaming instead of boiling, potassium retention is better (approximately 180–190mg). The cooking method meaningfully changes the mineral profile you should log.

3.3g Natural Sugars per 100g Raw — French Beans Contain More Sugar Than Most Green Vegetables, Contributing to Their Universally Accepted Mild Flavor

Raw French beans have 3.3g sugars per 100g — a glucose-fructose split of approximately 1.5g and 1.4g respectively, with 0.36g sucrose and 0.88g starch. This sugar content is higher than most green vegetables: raw spinach has 0.4g, raw broccoli has 1.7g, and raw green bell peppers have 2.4g sugars per 100g [1].

The natural sweetness (combined with mild bitterness-free flavor) is why French beans are among the most universally accepted vegetables across age groups and cuisines. Cooking increases sugars to 3.6g per 100g as starch partially converts to sugars during heat exposure.

For food journaling, the 3.3g sugar contributes approximately 13 kcal per 100g — nearly half of French beans' total 31 kcal. While this is nutritionally insignificant in any diet, it explains why French beans taste perceptibly sweeter than bitter gourd (0g sugar), ridge gourd, or leafy greens.

French Beans vs. Other Common Green Vegetables — per 100g Raw

NutrientFrench BeansOkraGreen PeasBroccoliCluster Beans
Calories (kcal)3133813436
Protein (g)1.831.935.42.83.55
Total Fat (g)0.220.190.40.40.4
Carbs (g)7.07.514.56.64.9
Fiber (g)2.73.25.72.64.8
Vitamin K (mcg)43.031.325.0101.60
Vitamin C (mg)12.223.040.089.218.0
Potassium (mg)211299244316301

Practical Tips for French Beans

  • 1

    French beans have 43mcg vitamin K per 100g raw (36% DV) — among the highest for non-leafy vegetables. Cooking increases this to 47.9mcg (40% DV). One cup of cooked beans provides half the daily vitamin K requirement.

  • 2

    Fiber actually increases when you cook French beans — from 2.7g to 3.2g per 100g. This concentration effect is unusual among vegetables. One cup cooked (125g) provides 4g fiber (14% DV).

  • 3

    Potassium drops 31% when boiled (211mg → 146mg). If tracking potassium, steam rather than boil — steaming retains approximately 85–90% of the original potassium vs. 69% for boiling.

  • 4

    At 31 kcal per 100g, French beans are calorie-light but not negligible. Track the oil and butter precisely — 1 tablespoon of butter on 200g of beans triples the dish's calorie count from 62 to 170 kcal.

  • 5

    French beans have 3.3g natural sugars per 100g — higher than most green vegetables. This glucose-fructose content gives French beans their mild, universally acceptable flavor. Cooking slightly increases sugars to 3.6g.

Frequently Asked Questions — French Beans

How many calories are in French beans?
Raw French beans (green beans) have 31 calories per 100g and cooked French beans have 35 calories per 100g. One cup of raw bean pieces (100g) has 31 calories. They are a low-calorie vegetable with good fiber and vitamin K content.
Are French beans the same as green beans?
Yes — French beans, green beans, and snap beans all refer to the same vegetable (Phaseolus vulgaris, immature pods). 'Haricots verts' is the French variety, which is thinner. In India, they are called fansi, sem phali, or beans. All varieties have similar nutritional profiles.
Are French beans a good source of vitamin K?
Yes — raw French beans have 43mcg vitamin K per 100g (36% of the daily value), and cooked French beans have 47.9mcg per 100g (40% DV). This is among the highest vitamin K content for non-leafy vegetables. One cup cooked provides about 60mcg — half the daily requirement.
Do French beans lose nutrients when cooked?
It depends on the nutrient. Potassium drops 31% and iron drops 37% when boiled. However, fiber increases 18% and calcium increases 19% due to water loss concentrating these nutrients. Vitamin C drops from 12.2mg to 9.7mg. Steaming preserves more nutrients than boiling.
How many calories are in French beans sabzi?
A typical French beans sabzi using 200g beans with 1 tablespoon oil, onion, and spices has approximately 190–220 calories. The beans contribute about 70 calories (35%); the oil and other ingredients provide the remaining 120–150 calories.

Important Notice

Nutritional values are based on USDA FoodData Central data for beans, snap, green, raw (FDC #169961) and beans, snap, green, cooked, boiled, drained, without salt (FDC #169141). This calculator is for informational and nutrition journaling purposes only — it is not a substitute for guidance from a qualified nutrition professional.

About the Author

Manish Kumar - Author
Manish KumarNASM Certified Personal Trainer (CPT)

Certified fitness professional and nutrition researcher with over 10 years of experience in the fitness and wellness industry. Founder of Food Nutrify, dedicated to making accurate, science-backed nutrition data accessible to everyone through free, easy-to-use calculators.

NASM Certified Personal TrainerSports Nutrition Specialist

References & Sources

  1. [1] USDA FoodData Central (2024). Beans, snap, green, raw (FDC #169961). U.S. Department of Agriculture, Agricultural Research Service.
  2. [2] USDA FoodData Central (2024). Beans, snap, green, cooked, boiled, drained, without salt (FDC #169141). U.S. Department of Agriculture, Agricultural Research Service.
  3. [3] Mtolo MJ, et al. (2024). How Nutritious Are French Beans (Phaseolus vulgaris L.) from the Citizen Science Experiment?. PMC / Nutrients.
  4. [4] ScienceDirect (2024). Green Beans (Phaseolus vulgaris) — Nutritional Composition and Agricultural Research. Agricultural and Biological Sciences.