---
title: "Macro Calculator: Protein, Carbs and Fat Targets"
method: POST
path: "/api/v1/tools/macro-calculator"
tags: ["fitness"]
---

# Macro Calculator: Protein, Carbs and Fat Targets

`POST /api/v1/tools/macro-calculator`

## Request

- Base URL: `https://calcfleet.com`
- URL: `https://calcfleet.com/api/v1/tools/macro-calculator`
- Auth: none declared

Calculate your daily protein, carb, and fat targets from your calorie goal. Choose a preset split or customize macros for your fitness or body-composition plan.

## Request body

- object
  - `dailyCalories` number, required
  - `preset` 'balanced' | 'lowCarb' | 'highProtein' | 'custom', required
  - `proteinPct` integer
  - `carbsPct` integer
  - `fatPct` integer

## Response `200`

Successful calculation result.

- object
  - `result` object, required: Structured calculation output (fields vary per calculator).

## Other responses

- `400`: Invalid input — the issues array contains Zod validation errors.
- `403`: Forbidden — an Authorization: Bearer cf_… key was supplied but is invalid.
- `404`: Unknown tool slug.

---

[API](https://skmtc.dev/calcfleet/apis/calcfleet-financial-calculators-api.md) · [All operations](https://skmtc.dev/calcfleet/apis/calcfleet-financial-calculators-api/llms.txt) · [OpenAPI document](https://skmtc.dev/calcfleet/apis/calcfleet-financial-calculators-api/revisions/cd9abd595bbe?raw)