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Workout Calorie Estimate API

Return estimated calorie burn range and confidence diagnostics for training sessions.

Endpoint

  • GET /api/v1/fitness/workout-calorie-estimate
  • POST /api/v1/fitness/workout-calorie-estimate/post

Parameters

Name Type Required In Description
activity_type string Yes Query/Body walking,jogging,running,cycling,swimming,strength_training,hiit,yoga,rowing,elliptical.
duration_min integer (1-360) Yes Query/Body Session duration in minutes.
weight number (35-300) Yes Query/Body Body weight in kg.
intensity string Yes Query/Body low,moderate,high,very_high.
lang string No Query Response language (en,es,de,fr,pt,ja,hi,ar).

Why Use This Endpoint

  • Produce realistic burn range instead of single-point estimate.
  • Explain confidence and uncertainty to improve user trust.
  • Add calibration rules for better long-term estimation quality.

Get Started

Request Example

curl -X GET "https://api.hefitapi.com/api/v1/fitness/workout-calorie-estimate?activity_type=cycling&duration_min=55&weight=78&intensity=moderate&lang=en" \
  -H "X-API-Key: YOUR_API_KEY"

curl -X POST "https://api.hefitapi.com/api/v1/fitness/workout-calorie-estimate/post?lang=en" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: YOUR_API_KEY" \
  -d '{"activity_type":"hiit","duration_min":35,"weight":82,"intensity":"high"}'

Response Example

Info

The response example below is for demonstration purposes only. Make a live request to this endpoint to receive the full, real-time, and potentially richer JSON structure.

{
  "activity_type": "cycling",
  "activity_label": "Cycling",
  "duration_min": 55,
  "weight_kg": 78.0,
  "intensity": "moderate",
  "intensity_label": "Moderate",
  "estimated_calorie_burn": {"central_kcal": 562, "lower_kcal": 471, "upper_kcal": 653},
  "confidence": {
    "score": 84,
    "level": "medium",
    "level_label": "Medium",
    "notes": ["Moderate confidence for this activity profile"]
  },
  "fueling_guidance": ["Use balanced pre/post fueling around session length"],
  "calibration_protocol": ["Calibrate estimate with wearable and trend data"],
  "range_application_rules": ["Use lower bound for conservative planning"],
  "quality_checks": [],
  "summary": "Useful directional burn estimate with medium confidence.",
  "language": "en",
  "_enterprise": {"client": "Acme Health", "plan": "pro", "request_id": "4b16430a6aa5df6a", "quota": 120, "usage_tracking": true},
  "_api_metadata_": {"endpoint_name": "fitness_workout_calorie_estimate", "response_language": "en"}
}

Product Positioning

Ideal for fitness tracking apps, coaching tools, and wearable-linked analytics products.

Note

duration_min must be between 1 and 360.