---
title: "Daily water intake"
method: GET
path: "/calculate/water-intake"
tags: ["Guideline tools"]
---

# Daily water intake

`GET /calculate/water-intake`

## Request

- Base URL: `https://myplate.food/api/v1`
- URL: `https://myplate.food/api/v1/calculate/water-intake`
- Auth: none declared

Daily fluid target from body weight and activity, from a 31 to 40 mL/kg/day rule of thumb, compared with the U.S. DRI total-water reference.

Cites its source in every response: `source` (the formula + published reference) and `canonical_url` (https://myplate.food/water-intake-calculator), plus a `disclaimer`.

## Query parameters

- `unit` 'metric' | 'imperial'
- `weight` number, required
- `activity` 'sedentary' | 'moderate' | 'active'

## Response `200`

Calculation result with citation envelope.

- CitedResult: Calculation result. Shape varies by endpoint, but every result carries the citation envelope fields below alongside the calculator's own numbers.
  - `calculator` string, required: The endpoint name.
  - `inputs` object: The parsed, normalized inputs the result was computed from.
  - `source` string, required: The formula and published reference behind the number.
  - `canonical_url` string, uri, required: The matching myplate.food page.
  - `disclaimer` string: Present on health calculators.

## Other responses

- `400`: Invalid or missing parameters.

---

[API](https://skmtc.dev/myplate/apis/myplate-food-nutrition-api.md) · [All operations](https://skmtc.dev/myplate/apis/myplate-food-nutrition-api/llms.txt) · [OpenAPI document](https://skmtc.dev/myplate/apis/myplate-food-nutrition-api/revisions/cb7ba731c59b?raw)