Daily safety snapshot
0mg sodium
0% sodium limit | 0% sat fat | 0% fiber target
Calories in 1 medium tomato = 22.1 kcal | Nutrition
1 medium tomato of Tomato, raw contains 22.1 kcal of calories. Free converter with serving tables, volume conversion, raw vs cooked, and FAQs. Data from USDA FoodData Central.
Calories in 1 medium tomato Calculator
1 medium tomato of Tomato, raw contains 22.1 kcal of calories. Use the converter above to calculate any weight, volume, or household serving, then compare the tables below. All values from USDA FoodData Central.
Result
1 medium tomato Tomato Calories
22.1 kcal calories
Computed from 123 g of food and USDA FoodData Central reference.
Reverse Calculation
Calories target to food amount
122.8 g (4.33 oz, 0.55 cups)
Reverse math uses 18 kcal calories per 100 g from USDA FoodData Central reference.
Tomato Macros by medium tomatos
Tomato Macros by Common Serving
Tomato Calories Range Around medium tomato = 123 g
Tomato Macros by Volume Measure
Tomato Prep-State Logging Check
Tomato Nutrient Efficiency Per Calorie
Tomato Dietary Profile
Tomato is a versatile food suitable for most dietary patterns. Check macros above for your specific dietary requirements.
Tomato Benefit Signals
- Low-carb base: Low carbohydrate level can fit low-carb meal planning. Basis: carbs <= 5 g per 100 g.
Tomato Daily Nutrient Coverage
Smart Calories Substitutes for Tomato
Tomato Condition-Aware Nutrition Notes
Real-World Tomato Serving Sizes
- 1 medium tomato (~123g): 22.1 kcal calories. Uses 123 g per medium tomato; one medium tomato equals 123 g. Catalog piece weight is 123g for this food.
- 2 medium tomatos (~246g): 44.3 kcal calories. Uses 123 g per medium tomato; 2 medium tomatos equals 246 g. Catalog piece weight is 123g for this food.
- 3 medium tomatos (~369g): 66.4 kcal calories. Uses 123 g per medium tomato; 3 medium tomatos equals 369 g. Catalog piece weight is 123g for this food.
Common Tomato Measurement Mistakes
- Mixing raw and cooked entries changes the math. This page uses the listed source record for Tomato, raw.
- Adding oil, sauces, sweeteners, breading, or drained liquid changes calories and macros beyond the base food values.
- For calories tracking, keep the same unit basis across the meal: grams, ounces, cups, or count-based servings should not be mixed without conversion.
Tomato Calories — Frequently Asked Questions
How much calories is in 100g of Tomato? 100g of Tomato contains 18 kcal of calories (USDA FoodData Central).
How much calories in one Tomato? A typical tomato weighs about 123g and contains 22.1 kcal of calories. This is calculated as 123g ÷ 100 × 18 = 22.1 kcal.
How much calories is in 1 cup of Tomato? One US cup of tomato weighs approximately 225g (density: 950 kg/m³). That serving contains 40.5 kcal of calories — computed as 225g ÷ 100 × 18.
How many grams of Tomato do I need to eat to get 500 kcal of calories? To reach 500 kcal of calories from Tomato, you need approximately 2778g — calculated as (500 ÷ 18) × 100 = 2778g.
Is Tomato high in calories? Tomato is low in calories at 18 kcal per 100g. If you're targeting this nutrient, Tomato alone is unlikely to be sufficient.
How efficient is Tomato as a source of calories per calorie? Tomato provides 100 kcal of calories per 100 kcal, making it excellent as a calories-per-calorie source. This is useful for calorie-restricted diets where macronutrient density matters.
What formula does this Tomato calories calculator use? The calculator uses calories = weight in grams / 100 x 18 kcal. For example, 100g of Tomato gives 18 kcal of calories. Volume entries are first converted to grams using the food density value, then the same per-100g formula is applied.
Is Tomato a good food for weight gain or calorie surplus goals? For weight gain or calorie surplus goals, Tomato is a modest contributor — with 18 kcal of calories per 100g. For best results, combine Tomato with other foods to hit your daily macro targets.
How reliable is the source data for Tomato? Tomato uses USDA FoodData Central reference as the nutrition source. Gram-based calculations use the per-100g source values, while cup and spoon estimates depend on the listed density and should be treated as practical serving estimates.
Should I measure Tomato raw or cooked? Tomato should be logged in the same prep state as the source record. If you weighed it cooked, avoid comparing it directly with a raw entry unless a cooked yield factor is available.
How to Calculate Tomato Calories
- Weigh raw. Place your tomato on a kitchen scale before cooking to get the most accurate starting weight.
- Enter weight into the calculator. Select your unit (g, oz, lb, or cup) and hit Calculate.
- Read the result. The calculator shows calories content for your exact portion.
- Compare servings. Use the serving range table below to quickly compare calories across portion sizes.
- Log to your tracker. Enter the raw weight and raw entry in your nutrition app for consistent macro tracking.
Why Volume ≠ Weight: Tomato Density Explained
Tomato has a medium density (950 kg/m³). A 1-cup measure holds approximately 225 g.
Why does density matter? The same volume can hold very different amounts of food depending on how dense it is. Oats (350 kg/m³) are light and airy — 1 cup = ~80 g. Water has a density of 1000 kg/m³ — 1 cup = 236 g. This is why nutrition labels use weight (grams), not volume — it's a more reliable measure.
Formula: mass (g) = volume (mL) × density (kg/m³) ÷ 1,000. This calculator uses this formula automatically when you enter a volume measure for Tomato.
Tomato Page Quality Signals
Source, density, prep-state, serving, and allergen checks used to decide whether this page is safe to promote from generated to indexed.
Data Sources & Methodology
Data source: USDA FoodData Central.
Computation method: Macro values are calculated by multiplying the food's per-100g value by the requested weight in grams, then dividing by 100. Volume inputs are first converted to grams using the food's density (kg/m³) from USDA data, then the same formula applies: calories = (weight_g / 100) × caloriesPer100g.
Accuracy note: Macro values represent averages across measured samples; individual items may vary ±5–10% depending on brand, farming method, and preparation technique. For clinical nutrition, consult a registered dietitian.
Update policy: Macro values are reviewed quarterly against USDA FoodData Central updates. Page last verified: 2026.