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Fitness and Body Calculators – Calorie Burn by Activity
x402
Fitness and Body Calculators – Calorie Burn by Activity is a paid API for AI agents from fitness-calc.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-29).
Calculates calories burned during a physical activity using MET values, body weight, and duration.
Price / call$0.02
Success—
StatusUnknown
How this service works
Calories burned by an activity (walking, running, cycling, swimming and more) from MET values, body weight and duration.
Output
Returns gross kcal burned, net kcal burned (subtracting resting metabolic rate), kcal per hour, MET value used, activity label, weight in kg, a human-readable summary, the compendium source, a disclaimer, and optionally a list of available activities if the requested one is not found.
Example use cases
Post-run calorie burn estimate
“I just ran at 6mph for 35 minutes and I weigh 80 kg — how many calories did I burn gross and net?”
Cycling workout energy expenditure
“Can you calculate how many calories a 165 lb person burns cycling at 12-14 mph for 60 minutes? Use imperial units.”
Yoga session calorie check
“How many calories does a 60 kg person burn doing yoga for 30 minutes?”
Technical details
Endpoint
GEThttps://fitness-calc.x402tookit.com/calorie-burn?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, science-backed (MET-based) estimate of calories burned for a specific physical activity given body weight and duration. It covers a wide range of activities (running, walking, cycling, swimming, yoga, and more) and returns both gross and net calorie figures. Prefer this over general nutrition APIs when the user's goal is exercise-specific caloric expenditure rather than dietary intake.
Side effects
- Unknown activity name returns an error or degraded result with a list of available activities
- Missing required parameters (activity, weight, minutes) returns a validation error
- Weight or duration outside valid range returns an error
- Invalid unit value returns an error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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