{
    "name": "TDEE Calculator",
    "url": "https://calculators.geekmidst.com/calculators/tdee-calculator",
    "markdown": "https://calculators.geekmidst.com/calculators/tdee-calculator.md",
    "category": "Health & fitness",
    "description": "Estimate the calories you burn per day from BMR (Mifflin–St Jeor or Katch–McArdle) and an activity multiplier, with every activity level compared.",
    "summary": "Total daily energy expenditure (TDEE) is roughly your resting metabolic rate multiplied by an activity factor. It is the starting point for a maintenance calorie target.",
    "also_called": [
        "Maintenance calorie calculator",
        "Daily calorie needs calculator"
    ],
    "applies_to": "Worldwide",
    "last_updated": "2026-10-29",
    "computation": "Results are computed in the visitor’s browser on the HTML page. This API describes the calculator; it does not compute results.",
    "inputs": [
        {
            "name": "method",
            "label": "BMR equation",
            "type": "segmented",
            "default": "mifflin",
            "options": {
                "mifflin": "Mifflin–St Jeor",
                "katch": "Katch–McArdle (body fat %)"
            }
        },
        {
            "name": "units",
            "label": "Units",
            "type": "segmented",
            "default": "metric",
            "options": {
                "metric": "Metric (cm, kg)",
                "us": "US (ft, in, lb)"
            }
        },
        {
            "name": "sex",
            "label": "Sex",
            "type": "segmented",
            "default": "male",
            "options": {
                "male": "Male",
                "female": "Female"
            },
            "shown_when": {
                "method": "mifflin"
            }
        },
        {
            "name": "age",
            "label": "Age",
            "type": "number",
            "default": "30",
            "unit": "years",
            "shown_when": {
                "method": "mifflin"
            }
        },
        {
            "name": "height_cm",
            "label": "Height",
            "type": "number",
            "default": "180",
            "unit": "cm",
            "shown_when": {
                "units": "metric",
                "method": "mifflin"
            }
        },
        {
            "name": "height_ft",
            "label": "Height (feet)",
            "type": "number",
            "default": "5",
            "unit": "ft",
            "shown_when": {
                "units": "us",
                "method": "mifflin"
            }
        },
        {
            "name": "height_in",
            "label": "Height (inches)",
            "type": "number",
            "default": "11",
            "unit": "in",
            "optional": true,
            "shown_when": {
                "units": "us",
                "method": "mifflin"
            }
        },
        {
            "name": "weight_kg",
            "label": "Weight",
            "type": "number",
            "default": "80",
            "unit": "kg",
            "shown_when": {
                "units": "metric"
            }
        },
        {
            "name": "weight_lb",
            "label": "Weight",
            "type": "number",
            "default": "176",
            "unit": "lb",
            "shown_when": {
                "units": "us"
            }
        },
        {
            "name": "body_fat",
            "label": "Body fat",
            "type": "number",
            "default": "20",
            "unit": "%",
            "shown_when": {
                "method": "katch"
            }
        },
        {
            "name": "activity",
            "label": "Activity level",
            "type": "select",
            "default": "moderate",
            "options": {
                "sedentary": "Sedentary (little or no exercise) ×1.2",
                "light": "Lightly active (1–3 days a week) ×1.375",
                "moderate": "Moderately active (3–5 days a week) ×1.55",
                "very": "Very active (6–7 days a week) ×1.725",
                "extra": "Extremely active (physical job or twice-daily training) ×1.9"
            }
        }
    ],
    "outputs": [
        {
            "key": "tdee",
            "label": "Estimated TDEE",
            "format": "integer"
        },
        {
            "key": "bmr",
            "label": "Basal metabolic rate",
            "format": "integer"
        },
        {
            "key": "factor",
            "label": "Activity multiplier",
            "format": "number"
        }
    ],
    "formula": {
        "text": "TDEE = BMR × activity factor;  Mifflin–St Jeor BMR = 10W + 6.25H − 5A + 5 (men) or − 161 (women);  Katch–McArdle BMR = 370 + 21.6 × W × (1 − BF%)",
        "variables": {
            "W": "weight in kg",
            "H": "height in cm",
            "A": "age in years",
            "BF%": "body fat as a fraction",
            "activity factor": "1.2 (sedentary) to 1.9 (extremely active)"
        }
    },
    "worked_example": {
        "inputs": {
            "method": "mifflin",
            "units": "metric",
            "sex": "male",
            "age": "30",
            "height_cm": "180",
            "height_ft": "5",
            "height_in": "11",
            "weight_kg": "80",
            "weight_lb": "176",
            "body_fat": "20",
            "activity": "moderate"
        },
        "steps": [
            "BMR = 10 × 80 + 6.25 × 180 − 5 × 30 + 5 = 800 + 1,125 − 150 + 5 = 1,780 kcal.",
            "TDEE = 1,780 × 1.55 = 2,759 kcal per day."
        ],
        "result": "A moderately active 30-year-old man of 180 cm and 80 kg burns roughly 2,760 kcal a day."
    },
    "interpretation": "Treat the result as a first estimate of maintenance intake. Track your weight for two to four weeks at that intake and adjust: if weight is stable, the estimate fits you.",
    "assumptions": [
        "Adult (18+), not pregnant or breastfeeding.",
        "Activity multipliers are conventional population averages and include exercise and everyday movement.",
        "Katch–McArdle assumes an accurate body-fat percentage."
    ],
    "limitations": [
        "Mifflin–St Jeor predicts measured resting metabolic rate within about 10% for most adults, but individual errors can be larger, especially at very high or low body fat.",
        "Choosing the activity level is the biggest source of error; most people overestimate it."
    ],
    "rules": null,
    "faqs": [
        {
            "question": "How is TDEE different from BMR?",
            "answer": "BMR is the energy used at complete rest. TDEE adds the energy of daily movement, exercise and digesting food, so it is always higher."
        },
        {
            "question": "Which BMR equation should I pick?",
            "answer": "Mifflin–St Jeor needs only age, sex, height and weight and is the usual default. Katch–McArdle can be better for very lean or very muscular people, but only with a reliable body-fat figure."
        }
    ],
    "sources": [],
    "related": [
        {
            "name": "BMR Calculator",
            "url": "https://calculators.geekmidst.com/calculators/bmr-calculator"
        },
        {
            "name": "BMI Calculator",
            "url": "https://calculators.geekmidst.com/calculators/bmi-calculator"
        },
        {
            "name": "Protein Calculator",
            "url": "https://calculators.geekmidst.com/calculators/protein-calculator"
        },
        {
            "name": "Fat Intake Calculator",
            "url": "https://calculators.geekmidst.com/calculators/fat-intake-calculator"
        },
        {
            "name": "Calorie Calculator",
            "url": "https://calculators.geekmidst.com/calculators/calorie-calculator"
        }
    ],
    "disclaimer": "This is a general screening estimate for adults, not medical advice or a diagnosis. Talk to a qualified health professional about your health.",
    "publisher": "GM¹X CalcVerse"
}