{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://askcalculators.com/calculator/calories-burned-calculator/schema.json",
  "title": "Calories Burned Calculator inputs",
  "description": "Estimate activity calories from body weight, duration, and metabolic equivalent (MET), with a time-projection table.",
  "type": "object",
  "properties": {
    "unitSystem": {
      "title": "Weight units",
      "type": "string",
      "default": "imperial",
      "enum": [
        "metric",
        "imperial"
      ],
      "x-optionLabels": {
        "metric": "Kilograms",
        "imperial": "Pounds"
      }
    },
    "weightKg": {
      "title": "Weight",
      "type": "number",
      "default": 73,
      "minimum": 1,
      "maximum": 500,
      "x-step": 0.1,
      "x-suffix": "kg",
      "x-showWhen": {
        "field": "unitSystem",
        "equals": "metric"
      }
    },
    "weightLb": {
      "title": "Weight",
      "type": "number",
      "default": 160,
      "minimum": 2,
      "maximum": 1100,
      "x-step": 0.1,
      "x-suffix": "lb",
      "x-showWhen": {
        "field": "unitSystem",
        "equals": "imperial"
      }
    },
    "activity": {
      "title": "Activity",
      "type": "string",
      "default": "running6",
      "enum": [
        "sleeping",
        "desk",
        "walking3",
        "walking4",
        "hiking",
        "weights",
        "cycling",
        "running5",
        "running6",
        "running8",
        "swimming",
        "rowing",
        "yoga",
        "hiit",
        "custom"
      ],
      "x-optionLabels": {
        "sleeping": "Sleeping",
        "desk": "Desk work",
        "walking3": "Walking 3 mph",
        "walking4": "Walking 4 mph",
        "hiking": "Hiking",
        "weights": "Weight lifting, vigorous",
        "cycling": "Cycling 12–14 mph",
        "running5": "Running 5 mph",
        "running6": "Running 6 mph",
        "running8": "Running 8 mph",
        "swimming": "Swimming laps",
        "rowing": "Rowing, vigorous",
        "yoga": "Yoga",
        "hiit": "HIIT circuit",
        "custom": "Custom MET"
      }
    },
    "customMet": {
      "title": "Custom MET value",
      "type": "number",
      "default": 5,
      "minimum": 0.1,
      "maximum": 30,
      "x-step": 0.1,
      "x-showWhen": {
        "field": "activity",
        "equals": "custom"
      }
    },
    "durationMinutes": {
      "title": "Duration",
      "type": "number",
      "default": 30,
      "minimum": 0.1,
      "maximum": 1440,
      "x-step": 0.1,
      "x-suffix": "minutes"
    }
  },
  "required": [
    "unitSystem",
    "activity",
    "durationMinutes"
  ],
  "allOf": [
    {
      "if": {
        "properties": {
          "unitSystem": {
            "const": "metric"
          }
        },
        "required": [
          "unitSystem"
        ]
      },
      "then": {
        "required": [
          "weightKg"
        ]
      }
    },
    {
      "if": {
        "properties": {
          "unitSystem": {
            "const": "imperial"
          }
        },
        "required": [
          "unitSystem"
        ]
      },
      "then": {
        "required": [
          "weightLb"
        ]
      }
    },
    {
      "if": {
        "properties": {
          "activity": {
            "const": "custom"
          }
        },
        "required": [
          "activity"
        ]
      },
      "then": {
        "required": [
          "customMet"
        ]
      }
    }
  ],
  "additionalProperties": false,
  "x-askcalculators": {
    "version": "2.0.0",
    "calculatorUrl": "https://askcalculators.com/calculator/calories-burned-calculator/",
    "queryExample": "https://askcalculators.com/calculator/calories-burned-calculator/?unitSystem=imperial&weightLb=160&activity=running6&durationMinutes=30",
    "migrationStatus": "migrated",
    "reviewStatus": "pending",
    "pageStatus": "live",
    "workStatus": "pending",
    "migratedDate": "2026-08-25",
    "formula": {
      "expression": "Calories ≈ MET × body weight (kg) × duration (hours)."
    },
    "quality": {
      "availability": "live",
      "technicalReviewRecord": "/reviews/calories-burned-calculator.json",
      "qualifiedReview": "pending",
      "qualifiedReviewer": null,
      "qualifiedReviewDate": null,
      "formulaVersion": "2.0.0",
      "referenceCoverage": "references-listed",
      "releaseTestScope": "Catalog and regression checks are not a professional formula audit; consult release evidence.",
      "historicalMetadataDate": "2026-08-25",
      "historicalMetadataNotice": "The imported date is not evidence of a completed human review."
    },
    "outputs": {
      "calories": {
        "title": "Estimated calories burned",
        "type": "number",
        "x-format": "number",
        "x-suffix": " kcal",
        "x-digits": 0,
        "x-primary": true
      },
      "caloriesPerHour": {
        "title": "Estimated hourly rate",
        "type": "number",
        "x-format": "number",
        "x-suffix": " kcal/hour",
        "x-digits": 0
      },
      "met": {
        "title": "MET value",
        "type": "number",
        "x-format": "number",
        "x-digits": 1
      },
      "activityLabel": {
        "title": "Activity",
        "type": "string",
        "x-format": "text"
      }
    }
  }
}