Peppers are a favorite low-calorie way to add flavor and color to meals, but actual calorie counts vary widely by type, ripeness, and even how the pepper is prepared. A green bell pepper weighs in around 20 calories per 100 grams, while a red bell pepper can reach 31 calories per 100 grams, and dried chili powders concentrate several times those calories into a tiny amount. This pepper calories per gram calculator lets you choose from common fresh and dried pepper types or enter your own calorie-per-100g value, then enter the weight you actually plan to eat.
The tool instantly converts ounces to grams, calculates total calories, and shows the energy density in calories per gram. It is helpful for tracking meals, planning calorie budgets, or checking how much free bulk a pepper adds to a dish. You can use presets for quick serving sizes or type any weight, making the calculator useful for recipes, meal prep, and portion logging.
🌶️ Pepper Details
⚖️ Serving Amount
Step-by-Step Guide
Choose a pepper type from the dropdown, or select Custom to enter your own calories-per-100g value. Next, type the amount you want to eat and choose grams or ounces. The calculator converts ounces to grams automatically, so you never need to do a separate conversion.
Press Calculate to see total calories, calories per gram, and the full math broken down in the result box. Use the quick-fill buttons to jump to common serving sizes like 50 g or 200 g, which is handy when you are building a recipe or logging a meal.
If you are logging food in an app that uses servings, weigh the pepper once and save your usual portion as a custom serving. Most meal-prep dishes use 50–100 g of chopped pepper per person.
The Math Behind It
The calculation is simple: calories per gram equals the label value divided by 100, then multiply by the weight in grams.
Total kcal = (kcal per 100g ÷ 100) × weight in grams
For example, a red bell pepper with 31 kcal per 100g gives 0.31 kcal per gram. A 150 g serving therefore provides 0.31 × 150 = 46.5 kcal. When you enter ounces, the tool first converts using 1 oz = 28.3495 g, then follows the same formula.
Reference Values
These are typical values for raw, fresh peppers. Dried chili powders and flakes are far more energy-dense because most water has been removed.
| Pepper | kcal per 100g | kcal per gram |
|---|---|---|
| Green bell pepper | 20 | 0.20 |
| Yellow bell pepper | 27 | 0.27 |
| Jalapeño | 29 | 0.29 |
| Red bell pepper | 31 | 0.31 |
| Serrano | 32 | 0.32 |
| Habanero | 40 | 0.40 |
| Cayenne powder (dried) | 318 | 3.18 |
Values are approximate and can vary by cultivar, growing conditions, and ripeness. For precise numbers, check the label or use a reliable nutrition database.
Factors Affecting Accuracy
Pepper calories depend on water content. Fresh peppers are about 90% water, which is why they stay low in calories. As a pepper ripens, sugars increase, so red bell peppers usually have more calories than green ones from the same plant. Drying removes water and concentrates calories dramatically, which is why a spoonful of chili powder has far more calories than a spoonful of fresh chili.
Preparing peppers also matters. Roasting with oil can add 10–20 kcal per serving, while pickled peppers sometimes contain added sugar. This calculator assumes plain, raw pepper unless you choose the dried powder option or enter a custom value that matches your actual product.
Frequently Asked Questions
How many calories are in a whole bell pepper? A medium red bell pepper weighs about 120–150 g and provides roughly 37–47 kcal. A medium green one gives about 24–30 kcal. The exact figure depends on the size of the pepper.
Do spicy peppers have more calories than sweet ones? Not reliably. Heat level comes from capsaicin, which has no meaningful calorie content. Spiciness and calories are controlled by different compounds, so a hot jalapeño and a mild sweet pepper can have nearly the same calorie count.
Can I use this for dried chili flakes? Yes, but choose the cayenne powder preset as a starting point, or enter the exact kcal per 100g from the package. Dried chili products typically range from 250 to 350 kcal per 100g depending on seeds and processing.
Why does my food tracker show different numbers? Databases disagree because peppers vary naturally. Seedless flesh, stem weight, and water loss during storage all alter the result. This calculator is best used as a close estimate, not a laboratory measurement.
Additional Resources
For authoritative nutrient data, browse the USDA FoodData Central database, which includes detailed entries for dozens of pepper varieties. The NIH Vitamin C fact sheet also explains why peppers are such a valuable low-calorie source of vitamin C.