{
  "id": "treadmill-calorie",
  "version": "bb8252654746",
  "status": "published",
  "name": "Treadmill Calorie Calculator",
  "question": "What are my treadmill calories?",
  "summary": "Estimates the calories burned walking or running on a treadmill from speed, incline, body weight and minutes, with the ACSM metabolic equations.",
  "category": "health",
  "subcategory": "body",
  "url": "https://www.acalculator.org/health/treadmill-calorie-calculator",
  "markdown": "https://www.acalculator.org/health/treadmill-calorie-calculator.md",
  "kind": "function",
  "method": "VO₂ = 3.5 + 0.1 × speed + 1.8 × speed × grade (walking) or 3.5 + 0.2 × speed + 0.9 × speed × grade (running), speed in m/min; calories per minute = VO₂ × kg ÷ 200.",
  "assumptions": [
    "The ACSM equations hold for walking at 1.9 to 3.7 mph and for running (or jogging) at 3 mph and up, on a treadmill without holding the rails.",
    "A litre of oxygen burns about 5 kcal, so kcal per minute = VO₂ (mL/kg/min) × kg ÷ 1,000 × 5.",
    "The result is an estimate for an average person; fitness, stride and holding the handrails change it."
  ],
  "inputs": {
    "$schema": "https://json-schema.org/draft/2020-12/schema",
    "type": "object",
    "properties": {
      "gait": {
        "title": "Walking or running",
        "description": "Walking uses the ACSM walking equation (1.9 to 3.7 mph); running, the running equation (3 mph and up).",
        "type": "string",
        "enum": [
          "walk",
          "run"
        ]
      },
      "speed": {
        "title": "Speed",
        "description": "The treadmill speed.",
        "type": [
          "number",
          "string"
        ],
        "x-quantity": "speed",
        "minimum": 0.22352,
        "maximum": 6.7056
      },
      "incline": {
        "title": "Incline",
        "description": "The treadmill grade: rise ÷ distance, as a percent.",
        "type": "number",
        "x-unit": "percent",
        "minimum": 0,
        "maximum": 30
      },
      "weight": {
        "title": "Weight",
        "description": "Your body weight.",
        "type": [
          "number",
          "string"
        ],
        "x-quantity": "mass",
        "minimum": 20,
        "maximum": 350
      },
      "min": {
        "title": "Minutes",
        "description": "How long you walk or run, in minutes.",
        "type": "integer",
        "minimum": 1,
        "maximum": 600
      }
    }
  },
  "outputs": {
    "calories": {
      "label": "Calories burned",
      "description": "Total kilocalories burned, including what the body burns at rest.",
      "format": "number"
    },
    "net": {
      "label": "Above resting",
      "description": "Kilocalories beyond resting: the part of the oxygen uptake above 3.5 mL/kg/min.",
      "format": "number"
    },
    "perHour": {
      "label": "Calories per hour",
      "description": "Kilocalories burned per hour at this speed, incline and weight.",
      "format": "number"
    },
    "mets": {
      "label": "METs",
      "description": "The oxygen uptake ÷ 3.5 mL/kg/min.",
      "format": "number"
    },
    "vo2": {
      "label": "Oxygen uptake (mL/kg/min)",
      "description": "The ACSM estimate of oxygen uptake, in millilitres per kilogram per minute.",
      "format": "number"
    }
  },
  "defaultAnswer": {
    "inputs": {
      "gait": "walk",
      "speed": 1.34112,
      "incline": 0,
      "weight": 72.57477920000001,
      "min": 30
    },
    "outputs": {
      "calories": 125.7000981726336,
      "net": 87.59833909263362,
      "perHour": 251.4001963452672,
      "mets": 3.2990628571428573,
      "vo2": 11.54672
    },
    "text": "30 minutes on the treadmill at 3 mph and 0% incline burns about 126 calories."
  },
  "examples": [
    {
      "given": {
        "gait": "walk",
        "speed": 1.34112,
        "incline": 0,
        "weight": 72.57477920000001,
        "min": 30
      },
      "expect": {
        "vo2": 11.54672,
        "mets": 3.2990628571428573,
        "calories": 125.7000981726336,
        "perHour": 251.4001963452672,
        "net": 87.59833909263362
      },
      "source": "ACSM walking equation, 3 mph = 80.4672 m/min; hand calculation in content.mdx"
    },
    {
      "given": {
        "gait": "walk",
        "speed": 1.56464,
        "incline": 5,
        "weight": 70,
        "min": 45
      },
      "expect": {
        "vo2": 21.336896000000003,
        "calories": 336.056112,
        "net": 280.93111200000004
      },
      "source": "ACSM walking equation, 3.5 mph = 93.8784 m/min, grade 0.05; hand calculation in content.mdx"
    },
    {
      "given": {
        "gait": "run",
        "speed": 2.68224,
        "incline": 2,
        "weight": 80,
        "min": 30
      },
      "expect": {
        "vo2": 38.583699200000005,
        "mets": 11.023914057142859,
        "calories": 463.0043904000001
      },
      "source": "ACSM running equation, 6 mph = 160.9344 m/min, grade 0.02; hand calculation in content.mdx"
    }
  ],
  "sources": [
    "American College of Sports Medicine. ACSM’s Guidelines for Exercise Testing and Prescription, 11th ed. Wolters Kluwer; 2021. Metabolic calculations (walking and running equations). https://www.acsm.org/education-resources/books/guidelines-exercise-testing-prescription",
    "Compendium of Physical Activities: Unit Conversions and the ACSM metabolic equations for walking (1.9 to 3.7 mph) and running (over 5.0 mph, or 3.0 mph and up when jogging). https://pacompendium.com/unite-conversions/",
    "National Institute of Standards and Technology. Guide for the Use of the International System of Units (SI), NIST Special Publication 811, Appendix B (1 mile = 1,609.344 m; 1 lb = 0.45359237 kg). https://www.nist.gov/pml/special-publication-811"
  ],
  "related": [
    "calories-burned",
    "calories-burned-walking",
    "heart-rate-zone"
  ],
  "changelog": []
}