Total Daily Energy Expenditure API

Compute TDEE = Mifflin-St Jeor BMR × activity factor (sedentary 1.2 … veryActive 1.9) plus maintain/loss/gain calorie targets (±250/±500). Answers 'how many calories should I eat', 'maintenance calories', 'TDEE for an active 80kg male', 'calories to lose weight'.

Price$0.01per request

MethodPOST

Route/v1/health/tdee

StatusLive

MIME typeapplication/json

Rate limit120/minute

CacheNo cache

healthtdeecaloriesmetabolismactivityweight-lossdietcalculator

API URLhttps://x402.hexl.dev/v1/health/tdee

Integration docs

Example request

{
  "weightKg": 80,
  "heightCm": 180,
  "ageYears": 30,
  "sex": "male",
  "activity": "moderate"
}

Example response

{
  "tdeeKcalPerDay": 2759,
  "bmrKcalPerDay": 1780,
  "activity": "moderate",
  "activityFactor": 1.55,
  "formula": "TDEE = BMR * activityFactor (Mifflin-St Jeor BMR)",
  "targets": {
    "maintain": 2759,
    "mildLoss": 2509,
    "loss": 2259,
    "mildGain": 3009,
    "gain": 3259
  }
}

Input schema

{
  "type": "object",
  "required": [
    "weightKg",
    "heightCm",
    "ageYears",
    "sex"
  ],
  "properties": {
    "weightKg": {
      "type": "number",
      "examples": [
        80
      ]
    },
    "heightCm": {
      "type": "number",
      "examples": [
        180
      ]
    },
    "ageYears": {
      "type": "number",
      "examples": [
        30
      ]
    },
    "sex": {
      "type": "string",
      "enum": [
        "male",
        "female"
      ]
    },
    "activity": {
      "type": "string",
      "enum": [
        "sedentary",
        "light",
        "moderate",
        "active",
        "veryActive"
      ],
      "default": "moderate"
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}