How Many Calories Are in a Jalapeño? Full Nutrition Breakdown

A single medium jalapeño pepper contains just 4 calories. That makes jalapeños one of the most nutrient-dense, low-calorie foods you can add to your diet. Despite their tiny calorie count, jalapeños deliver impressive amounts of vitamin C, vitamin A, vitamin B6, and several important minerals — plus capsaicin, which offers its own range of health benefits.

Whether you're counting calories, tracking macros, or just curious about what's in your favorite pepper, here's everything you need to know about jalapeño nutrition.

Nutrition Facts: One Medium Raw Jalapeño (14g)

Nutrient	Amount	% Daily Value
Calories	4	—
Total Fat	0.05 g	0%
Sodium	0.4 mg	0%
Total Carbohydrates	0.9 g	0%
Dietary Fiber	0.4 g	1%
Sugars	0.6 g	—
Protein	0.1 g	0%
Vitamin C	16.6 mg	18%
Vitamin A	41 mcg RAE	5%
Vitamin B6	0.05 mg	3%
Vitamin K	2.4 mcg	2%
Folate	3.8 mcg	1%
Potassium	33 mg	1%
Iron	0.04 mg	0%
Manganese	0.03 mg	1%

Source: USDA FoodData Central

Key Nutritional Highlights

Vitamin C Powerhouse

The standout nutrient in jalapeños is vitamin C. A single pepper provides 18% of the daily recommended intake — more per calorie than almost any other food. Vitamin C is essential for immune function, collagen synthesis, iron absorption, and antioxidant protection. Eating just three jalapeños gives you over half your daily vitamin C needs for essentially zero caloric cost.

For comparison, you'd need to eat 20 calories worth of oranges to get the same amount of vitamin C found in 4 calories of jalapeño.

Vitamin A and Carotenoids

Jalapeños contain beta-carotene, which your body converts to vitamin A. This nutrient supports eye health, immune function, and skin integrity. Red (fully ripe) jalapeños contain significantly more beta-carotene than green ones — up to 3x more — because the carotenoid pigments develop as the pepper matures.

Capsaicin

While not a traditional nutrient, capsaicin deserves mention because of its extensive health benefits. Each jalapeño contains roughly 0.5–1 mg of capsaicin, which has been linked to increased metabolism, reduced inflammation, pain relief, and improved cardiovascular markers. Learn more about where jalapeños fall on the Scoville scale.

Dietary Fiber

With 0.4 g of fiber per pepper, jalapeños contribute to digestive health. While that may seem small for a single pepper, people who regularly cook with jalapeños may add 3–5 to a dish, providing 1.2–2 g of fiber with virtually no calories.

Nutrition Comparison: Fresh vs. Pickled vs. Dried

Pickled Jalapeños

Pickled (canned) jalapeños have a slightly different nutritional profile due to the brining process:

• Calories: Similar (about 4 per pepper)
• Sodium: Significantly higher — about 190 mg per 1/4 cup (compared to almost zero in fresh)
• Vitamin C: Reduced by approximately 50% due to the pickling process
• Added ingredients: Many commercial brands add calcium chloride, vinegar, and sometimes sugar

If you're watching sodium intake, fresh jalapeños are the better choice. But pickled jalapeños still retain meaningful amounts of vitamins and capsaicin.

Dried Jalapeños (Chipotle)

When jalapeños are smoke-dried, they become chipotle peppers. The drying process concentrates nutrients per gram:

• Calories: About 15 per dried pepper (due to water removal)
• Capsaicin: Concentrated, making chipotles spicier per gram
• Vitamin C: Significantly reduced by the drying and smoking process
• Fiber: Concentrated — about 1.5 g per dried pepper
• Iron: Higher concentration per serving

How Jalapeños Compare to Other Peppers

Pepper (1 medium)	Calories	Vitamin C	Capsaicin
Bell Pepper	30	152% DV	None
Jalapeño	4	18% DV	Moderate
Serrano	2	7% DV	High
Habanero	18	100% DV	Very High
Poblano	48	203% DV	Low
Cayenne	6	12% DV	High

Bell peppers and poblanos are larger and therefore have more total calories and nutrients per pepper. But calorie-for-calorie, jalapeños are among the most nutrient-dense peppers available.

Jalapeños in a Weight Loss Diet

Jalapeños are an ideal food for weight management because they:

1. Add flavor without calories — replacing calorie-dense condiments with fresh jalapeño or jalapeño-based sauces can save hundreds of calories per meal
2. Boost metabolism — capsaicin increases thermogenesis, burning an estimated 50 extra calories per day
3. Reduce appetite — studies show capsaicin consumption decreases caloric intake at subsequent meals
4. Are satisfying — the intense flavor of jalapeños can make simple, low-calorie meals feel more satisfying

Try using jalapeños in a classic green sauce as a zero-calorie flavor boost on proteins, rice bowls, and salads.

Macronutrient Breakdown

Jalapeños are composed of approximately:

• 88% water — contributing to hydration
• 7% carbohydrates — mostly simple sugars and fiber
• 3% protein — a small but present amount
• 2% fat — negligible

This composition makes jalapeños compatible with virtually every dietary approach: keto, low-carb, low-fat, vegan, paleo, and whole30.

How to Maximize Nutritional Benefits

• Eat them raw for maximum vitamin C content (cooking reduces it by 15–30%)
• Choose red jalapeños when available for higher vitamin A and carotenoids
• Leave the seeds in if you can handle the heat — the membrane contains additional capsaicin and nutrients
• Pair with healthy fats — the carotenoids in jalapeños are fat-soluble, so eating them with avocado, olive oil, or cheese improves absorption

Frequently Asked Questions

Are jalapeños a good source of any vitamins?

Yes, jalapeños are an excellent source of vitamin C (18% DV per pepper) and a good source of vitamin A (5% DV), vitamin B6 (3% DV), and vitamin K (2% DV). Given that they contain only 4 calories, their vitamin density is remarkable.

Do pickled jalapeños have the same nutritional value as fresh?

Pickled jalapeños retain most of their capsaicin and some vitamins, but they lose about half their vitamin C during the pickling process and gain significant sodium from the brine. For maximum nutrition, fresh jalapeños are the better choice.

How many jalapeños should I eat per day for health benefits?

Research on capsaicin benefits typically uses doses equivalent to 2–4 medium jalapeños per day. This provides meaningful amounts of capsaicin for metabolic and anti-inflammatory benefits, plus substantial vitamin C, while staying well within comfortable digestive limits for most people.

Are jalapeños keto-friendly?

Absolutely. A medium jalapeño contains less than 1 gram of total carbohydrates and 0.4 grams of fiber, resulting in approximately 0.5 grams of net carbs. You could eat dozens of jalapeños and remain well within typical keto carbohydrate limits.