Calorie Calculator API

POST https://api.findutils.com/api/tools/calorie-calculator/execute

Work out how many calories to eat per day to lose, maintain, or gain weight. Maintenance comes from the Mifflin-St Jeor BMR and an activity multiplier (the same chain as the TDEE calculator), then a mild/moderate/extreme rate applies a 250, 500, or 1000 kcal daily deficit or surplus. Also returns the projected weekly weight change and a protein/carbs/fat split.

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Request body

application/json

gender

string required

Biological sex used by the BMR equation. One of male · female.
age

integer required

Age in years (1-120).
weight

number required

Body weight in kg (metric) or lbs (imperial).
height

number optional

Height in cm (metric), or total inches (imperial).
height_feet

number optional

Imperial only: feet part of the height.
height_inches

number optional

Imperial only: inches part of the height.
unit_system

string optional

Unit system for weight and height. One of metric · imperial. Default "metric".
activity_level

string optional

sedentary 1.2, light 1.375, moderate 1.55, active 1.725, very_active 1.9, extra_active 2.1. One of sedentary · light · moderate · active · very_active · extra_active. Default "moderate".
goal

string optional

Eat below, at, or above maintenance. One of lose · maintain · gain. Default "maintain".
rate

string optional

How aggressive the deficit or surplus is: mild 250, moderate 500, extreme 1000 kcal/day. Ignored when goal is "maintain". One of mild · moderate · extreme. Default "moderate".

Example arguments

Verified

{
  "gender": "male",
  "age": 30,
  "weight": 80,
  "height": 180,
  "goal": "lose",
  "rate": "moderate"
}

curl -X POST https://api.findutils.com/api/tools/calorie-calculator/execute \
  -H "Content-Type: application/json" \
  -d '{
    "gender": "male",
    "age": 30,
    "weight": 80,
    "height": 180,
    "goal": "lose",
    "rate": "moderate"
  }'

const response = await fetch('https://api.findutils.com/api/tools/calorie-calculator/execute', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({"gender":"male","age":30,"weight":80,"height":180,"goal":"lose","rate":"moderate"}),
});
const data = await response.json();

import requests

response = requests.post(
    "https://api.findutils.com/api/tools/calorie-calculator/execute",
    json={"gender":"male","age":30,"weight":80,"height":180,"goal":"lose","rate":"moderate"},
)
data = response.json()

$ch = curl_init('https://api.findutils.com/api/tools/calorie-calculator/execute');
curl_setopt_array($ch, [
    CURLOPT_POST => true,
    CURLOPT_HTTPHEADER => ['Content-Type: application/json'],
    CURLOPT_POSTFIELDS => '{"gender":"male","age":30,"weight":80,"height":180,"goal":"lose","rate":"moderate"}',
    CURLOPT_RETURNTRANSFER => true,
]);
$data = json_decode(curl_exec($ch), true);

Also an MCP tool

Call calorie_calculator from Claude, Cursor or any MCP client. Same arguments, same output.

https://mcp.findutils.com

MCP reference

Rate limit: 60 a minute, per IP
Auth: None
REST id: calorie-calculator
MCP name: calorie_calculator
Category: Calculators
Machine-readable: openapi.json · markdown.md

Request body

Example arguments

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