Calculadora de Nutrición y
Calorías Gratis
Desglose exacto de macronutrientes, calorías de mantenimiento (TDEE) y déficit calórico para más de 3 millones de alimentos. Totalmente gratis y privado.
Food Nutrition Search & Calculator
Search Any Food or Choose a Suggested Staple
Type any food name in the box above or tap a popular staple below to calculate instant calories and macros.
Soya Chunks / Nutrela (Dry / Raw)
Portion: 100g • Soy Products & Plant Protein
1,443 kJ equivalent
208 kcal from protein
132 kcal from carbs
5 kcal from fat
Meal Nutrition Plate
0 itemsAccumulate your whole meal's ingredients to view combined daily calories & macros.
Your Meal Plate is Empty
Search any food above and click "Add To My Plate", or try our sample high-protein athlete meal.
Calculadora de Calorías Diarias y Déficit (TDEE)
Calcula tu Tasa Metabólica Basal (TMB) y Gasto Energético Diario Total con la ecuación clínica de Mifflin-St Jeor.
Basal Metabolic Rate (BMR): 1,724 kcal (energy burned completely at rest).
Weight Management Targets
High Protein Fitness Split (40% C / 35% P / 25% F)
Z7-Day Zigzag Calorie Cycling ScheduleOvercome Plateaus ↓
Zigzag calorie cycling prevents metabolic slowdown during fat loss by incorporating higher-calorie refeed days on weekends while maintaining your exact weekly net deficit.
Conversor de Unidades Energéticas
Convierte fácilmente entre kilocalorías (kcal), kilojulios (kJ) y vatios-hora.
The Complete Guide to Using a Nutrition Calculator for Health, Fitness & Weight Loss
Whether your goal is rapid fat loss, lean muscle hypertrophy, athletic conditioning, or conscious nutritional awareness, achieving sustainable success starts with precision dietary data. Learn how our free nutrition calculator and calorie calculator ecosystem empower you to master energy balance.
1. What is a Nutrition Calculator & Why Precision Tracking Matters
A nutrition calculator is an analytical digital tool designed to translate raw food consumption into verifiable nutritional metrics: total energy (calories and kilojoules), macronutrients (protein, carbohydrates, dietary fats), and micronutrients (dietary fiber, natural sugars, and sodium). While traditional calorie counting frequently relied on approximate guesses or confusing volumetric portion cups, a modern free nutrition calculator connects directly to comprehensive scientific nutritional repositories like the USDA FoodData Central and Open Food Facts.
Clinical metabolic research consistently demonstrates that self-reported calorie intake without an objective food calculator underestimates true daily consumption by an average of 30% to 50%. Even experienced athletes frequently misjudge caloric density in calorie-dense staples like cooking oils, nut butters, salad dressings, and grains. By weighting portions in grams or selecting standardized piece counts, you replace estimation with empirical nutritional accuracy.
2. Food Nutrition Calculator: Decoding Calories & Macronutrients
Every whole food and packaged edible item derives its energetic fuel from three primary macronutrients, analyzed through the clinical Atwater factor system in our food nutrition calculator:
- Dietary Protein (4 kcal/g)Essential amino acids required for muscle protein synthesis, enzyme production, and immune function. Features the highest Thermic Effect of Food (~25%).
- Carbohydrates (4 kcal/g)The body’s preferred rapid fuel source for glycolytic physical exercise and central nervous system cognition. Includes dietary fiber which supports gut microbiome health.
- Total Fats (9 kcal/g)The most energy-dense macronutrient, fundamental for steroid endocrine synthesis (testosterone, estrogen), cellular membranes, and absorption of fat-soluble vitamins (A, D, E, K).
When you search any item in our food calorie calculator, whether it is raw chicken breast, boiled eggs, chia seeds, brown rice, or fresh fruit, you receive instantaneous recalculation according to the exact portion scale you specify. Using an online food calculator ensures you never overlook hidden calories from cooking oils, condiments, or marinades.
3. Recipe Nutrition Calculator: Building Balanced Meals & Plates
Most people do not consume single ingredients in isolation; meals are culinary combinations of proteins, complex carbohydrates, vegetables, cooking fats, and seasoning sauces. Using a dedicated recipe nutrition calculator bridges the gap between raw ingredients and real-world dining.
With our interactive Meal Plate builder, you can add multiple distinct items into a single unified meal log. For instance, combining 150 grams of cooked chicken breast, 200 grams of basmati white rice, 100 grams of steamed broccoli, and 10 grams of extra virgin olive oil immediately aggregates into a comprehensive FDA-standard nutrition facts label. Rather than estimating mixed dishes, this intelligent food calculator dynamically tracks cumulative calories, net carbs, and high-quality protein. This feature transforms the tool into a powerful recipe nutrition calculator, enabling fitness enthusiasts, meal preppers, and culinary home cooks to formulate balanced meal recipes before firing up the stove.
4. Maintenance Calorie Calculator: Finding Your True Energy Balance
Your baseline daily energy expenditure is governed by the laws of thermodynamics. To understand how much fuel your body requires to neither gain nor lose weight, our maintenance calorie calculator calculates your Total Daily Energy Expenditure (TDEE) based on two clinical components:
- Basal Metabolic Rate (BMR): The baseline caloric energy expended simply keeping your brain, heart, lungs, and cellular organs alive in a resting, post-absorptive state. We employ the peer-reviewed Mifflin-St Jeor equation, verified in multiple clinical trials as the most accurate non-invasive predictive formula.
- Physical Activity Level (PAL): Multipliers ranging from Sedentary (1.2x) to Extra Active (1.9x) that account for occupational non-exercise activity thermogenesis (NEAT), planned athletic training, and the thermic effect of digested food (TEF).
Identifying your maintenance baseline with our calorie calculator is the indispensable foundation for every successful body composition journey. Without an accurate maintenance anchor, any targeted surplus or deficit becomes pure conjecture.
5. Calorie Calculator for Weight Loss: Setting a Safe, Sustainable Deficit
Once your maintenance threshold is determined, utilizing our calorie calculator for weight loss allows you to formulate a customized daily calorie calculator target tailored to your personal timeline and lifestyle:
Yields ~0.5 lb (0.25 kg) loss per week. Ideal for athletes with low starting body fat looking to preserve 100% of strength and workout performance.
Yields ~1.0 lb (0.45 kg) loss per week. The gold-standard recommended deficit supported by sports dietitians worldwide for healthy, steady progress.
Yields ~1.5 lb (0.7 kg) loss per week. Recommended only for individuals with higher initial body fat or short-term competition deadlines.
Crucially, our weight loss engine also features a Zigzag Calorie Cycling schedule. By undulating calories higher on intensive training days (e.g. heavy leg workouts) and lower on rest days, you sustain thyroid function, leptin signaling, and glycogen stores while remaining in an identical weekly net deficit.
6. Macronutrient Reference Table for Fitness Goals
Use this empirical guide alongside our food nutrition calculator and daily calorie calculator to balance your daily intake:
| Goal / Protocol | Protein Target | Fats Target | Carbohydrates Target | Primary Benefit |
|---|---|---|---|---|
| Fat Loss / Cutting | 1.8 – 2.4 g/kg | 20% – 25% of calories | Remainder of calories | Max muscle retention & high satiety |
| Maintenance / Health | 1.4 – 1.8 g/kg | 25% – 30% of calories | 45% – 55% of calories | Optimal hormonal balance & energy |
| Muscle Building / Bulking | 1.6 – 2.0 g/kg | 20% – 25% of calories | 50% – 60% of calories | Maximum progressive overload & recovery |
| Endurance Athletics | 1.2 – 1.6 g/kg | 20% – 25% of calories | 60% – 70% of calories | Supercompensated muscle glycogen stores |
Evidence-Based FAQ & Calorie Guide
Have specific questions about recipe nutrition, meal macros, or setting a calorie deficit? Check our detailed FAQ answers below.
Start Calculating Your Nutrition Today — 100% Free Forever
No accounts to register, no paywalls, and zero tracking cookies. Use our food nutrition calculator, recipe plate builder, and daily maintenance calorie calculator right in your browser.
Preguntas Frecuentes
Respuestas fundamentadas en la ciencia a las dudas nutricionales más comunes.
1¿Cómo calculo mi nutrición?
Para calcular tu nutrición con exactitud: 1) Pesa tus porciones en gramos con una báscula digital de cocina. 2) Consulta cada alimento en una base de datos de laboratorio como USDA FoodData Central o nuestra Calculadora de Nutrición gratuita para obtener calorías y macronutrientes. 3) Aplica el sistema Atwater 4-4-9: multiplica gramos de proteína por 4, carbohidratos por 4 y grasas por 9 para validar las calorías. 4) Compara tu ingesta diaria contra tu Gasto Energético Diario Total (TDEE).
2¿Cuál es la mejor calculadora de nutrición?
La mejor calculadora de nutrición es aquella con escalado exacto en gramos, conectada a bases de datos científicas verificadas (como USDA y Open Food Facts con más de 3 millones de alimentos), sin muros de pago ni anuncios intrusivos. Nutrition Calculator Free ofrece todas estas funciones al 100% gratis y protegiendo tu privacidad.
3¿Cómo calcular la nutrición de una receta?
Para calcular la nutrición de una receta: 1) Lista todos los ingredientes crudos o cocidos con su peso exacto en gramos. 2) Introduce cada ingrediente en nuestra calculadora para obtener sus calorías, proteínas, carbohidratos y grasas. 3) Suma los valores de todos los ingredientes. 4) Divide el total entre el número de porciones para obtener el desglose por ración.
4¿Cómo calcular la nutrición de una comida?
Pesa cada ingrediente en tu plato (por ejemplo: 150g de pechuga de pollo, 200g de arroz integral, 100g de brócoli y 10g de aceite de oliva). Añádelos a nuestro Creador de Platos interactivo. La calculadora suma calorías, proteínas, carbohidratos, grasas, fibra y sodio, generando una etiqueta nutricional completa.
5¿Cuánta nutrición y calorías necesito por día?
Tus requerimientos dependen de tu Gasto Energético Total (TDEE), edad, sexo, peso y objetivos. Como regla científica: consume las calorías de tu TDEE (o réstale 500 kcal para perder grasa); consume entre 1.4 y 2.2g de proteína por kg de peso corporal; destina del 20% al 35% de calorías a grasas saludables; y completa el resto con carbohidratos complejos.
6¿Qué es una calculadora de déficit calórico?
Es una herramienta metabólica que calcula cuántas calorías consumir por debajo de tu nivel de mantenimiento para perder grasa corporal. Como aproximadamente 7,700 kcal equivalen a 1 kg de grasa, un déficit diario de 500 kcal produce una pérdida sostenible de unos 0.45 kg (1 libra) por semana.
7¿Cómo calcular un déficit calórico gratis?
1) Dirígete a nuestra sección de Calculadora TDEE. 2) Introduce tu sexo, edad, estatura, peso y nivel de actividad física. 3) Elige tu ritmo: Leve (-250 kcal/día), Estándar (-500 kcal/día) o Acelerado (-750 kcal/día). La herramienta calcula al instante tus calorías objetivo y reparto de macronutrientes sin necesidad de registro ni pago.
8¿Cuánto peso perderé con la calculadora de calorías?
Tu velocidad de pérdida depende del déficit acumulado: un déficit de 500 kcal diarias produce aproximadamente 0.45 kg a la semana. En 12 semanas representa unos 5.4 kg de grasa corporal, especialmente si se combina con entrenamiento de fuerza y suficiente proteína.
9¿Cuál es la fórmula de calorías más exacta?
Los estudios clínicos confirman que la ecuación Mifflin-St Jeor es la más precisa para estimar la tasa metabólica basal (BMR) en adultos sanos sin pruebas de laboratorio. Para personas con porcentaje de grasa medido, la fórmula Katch-McArdle ofrece precisión adicional.
10¿Cómo calcular beneficios de ayuda alimentaria y presupuesto?
Los programas de ayuda nutricional se calculan según el tamaño del hogar e ingresos netos. Puedes usar nuestra calculadora de nutrición gratuita para diseñar comidas ricas en proteínas, equilibradas y de bajo coste económico para aprovechar al máximo tu presupuesto alimentario.
Understanding Nutrition Science & Formulas
How calories, macronutrients, and metabolic equations work together to drive body composition.
Calories (kcal)
The basic unit of dietary energy. 1 nutritional Calorie (kcal) equals 1,000 thermal calories or 4.184 kilojoules (kJ). Governs overall weight gain, loss, and maintenance.
Protein
Essential building blocks (amino acids) for skeletal muscle tissue, enzymes, and hormones. Has the highest Thermic Effect of Food (TEF ~20-30%) and boosts satiety.
Carbohydrates
The primary fast-burning fuel for the central nervous system and high-intensity anaerobic exercise. Stored in liver and muscle as glycogen.
Total Fat
Crucial for steroid hormone production (testosterone, estrogen), fat-soluble vitamin absorption (A, D, E, K), and cellular membrane integrity.
BMR Equation Comparison: Which is Most Accurate?
1. Mifflin-St Jeor Equation
Introduced in 1990, clinical trials confirm Mifflin-St Jeor is the most accurate formula for estimating BMR in healthy individuals without requiring laboratory body fat analysis (accurate within ±10% for over 82% of individuals).
Women: BMR = (10 × weight in kg) + (6.25 × height in cm) - (5 × age) - 161
2. Revised Harris-Benedict Formula (1984)
The original 1919 Harris-Benedict formula was revised by Roza and Shizgal in 1984. It remains widely cited in clinical medicine, though it can slightly overestimate caloric expenditure compared to modern indirect calorimetry chambers.
3. Katch-McArdle Formula (Lean Mass Specific)
Calculates resting daily energy expenditure based directly on Lean Body Mass (LBM). Ideal for lean athletes, bodybuilders, and fitness enthusiasts with a verified DEXA or hydrostatic body fat measurement.