Guava is a tropical favorite that packs a surprisingly high dose of vitamin C, fiber, and natural sweetness into a fairly low-calorie package. This calculator helps you estimate the calories and macronutrients in the exact serving you plan to eat, whether you are tracking one medium fruit, a cup of sliced guava, or a specific weight in grams or ounces.
It is built for everyday calorie counting, macro tracking, meal planning, and healthy eating. Just enter your amount, choose a serving size, and let the tool split the totals across however many portions you need. You will see total calories, per-serving calories, and a full macro breakdown including protein, carbs, fiber, net carbs, sugars, and fat.
The numbers are based on raw common guava from the USDA FoodData Central database, so the tool is most accurate for fresh fruit. Use quick-fill buttons for common portions, or use a food scale for the most precise results.
🍈 Guava Serving Calculator
Enter your guava amount to see calories, macros, and per-serving figures.
📊 Macro breakdown per serving
Values are for raw common guava (edible portion). See formula section for source details.
How to Use This Tool
Enter the amount of guava you plan to eat in the first field, then choose a unit from the dropdown: grams, ounces, medium fruit, or cup of sliced guava. A medium raw guava is treated as about 55 g of edible flesh, and one cup of sliced guava is treated as about 165 g. If you have a kitchen scale, grams give the most reliable result because fruit size varies widely.
Next, set how many servings you want to split the total into and click Calculate. The results panel shows total calories, calories per serving, and the weight of one serving. When the macro breakdown option is checked, you also get protein, total carbs, fiber, net carbs, sugars, and fat per serving. Quick-fill buttons set common portions, and Reset clears everything.
How It Works
The calculator uses USDA FoodData Central reference values for raw common guava. Per 100 g, guava contains about 68 kcal, 2.55 g protein, 14.32 g carbohydrate, 5.4 g fiber, 8.92 g sugars, and 0.95 g fat. Net carbs equal total carbs minus fiber: 14.32 - 5.4 = 8.92 g per 100 g.
The tool first converts your amount to grams using the selected unit factor, then multiplies the per-100 g values by your gram weight divided by 100. For example, calories = grams × 0.68 and protein = grams × 0.0255. Finally, every result is divided by your serving count and rounded to one decimal place.
Guava Nutrition at a Glance
The table below summarizes the reference data used by the calculator. A medium guava is commonly listed as about 55 g of edible portion, but actual fruit weight can range from 40 g to 100 g.
| Nutrient | Per 100 g | Per medium guava (55 g) |
|---|---|---|
| Calories | 68 kcal | 37 kcal |
| Protein | 2.55 g | 1.4 g |
| Total carbs | 14.32 g | 7.9 g |
| Fiber | 5.4 g | 3.0 g |
| Net carbs | 8.92 g | 4.9 g |
| Sugars | 8.92 g | 4.9 g |
| Fat | 0.95 g | 0.5 g |
Data source: USDA FoodData Central. Values apply to fresh raw guava, not dried, candied, or juice products.
Worked Examples
Example 1: One cup split into two servings. One cup of sliced guava is about 165 g, so the total is roughly 112 kcal. Each serving works out to about 56 kcal, 2.1 g protein, 11.8 g carbs, 4.5 g fiber, and 7.4 g net carbs.
Example 2: Two medium fruits as a snack. Two medium guavas weigh about 110 g and provide about 75 kcal, 2.8 g protein, 15.8 g carbs, and 5.9 g fiber.
Example 3: Meal-prep portions. Weigh 200 g of guava and divide it into 4 containers. Each 50 g serving has about 34 kcal, 1.3 g protein, 7.2 g carbs, 2.7 g fiber, and 4.5 g net carbs.
If you are building a mixed fruit bowl, the fruit calories per handful calculator can help you compare guava with other fruit portions.
Nutrition Tracking Tips
For consistent logging, weigh the edible part of the guava on a digital scale and enter grams. If you do not eat the rind, weigh only the flesh you actually consume. The 55 g average is a useful baseline, but a large guava can weigh 80-100 g and add noticeably more calories.
If you track net carbs for low-carb or keto-style eating, guava can fit into a moderate plan: one medium fruit supplies about 3 g of fiber, roughly 11% of the daily value.
Frequently Asked Questions
How many calories are in one guava? A typical medium raw guava with about 55 g of edible flesh has roughly 37 kcal. Larger fruits can reach 55-70 kcal, so weighing is best when accuracy matters.
Are guava calories mostly from sugar? Guava does contain natural sugar, about 4.9 g per medium fruit, but it also provides 3 g of fiber and only 0.5 g of fat. This balance makes the calorie impact moderate.
Is guava high in vitamin C? Yes, guava is one of the richest fruit sources of vitamin C. This calculator focuses on calories and macronutrients; if you want to compare tropical fruit nutrition, the pineapple nutrition calculator may be useful too.
Why does my calorie app show a different number? Apps use different databases and may assume peeled weight, a different average fruit size, or a different variety. The values here are standardized USDA figures for raw common guava, so they are a reliable baseline.