Calculate a recommended daily water intake in liters, ounces, cups, and 250 ml glasses, plus a per-waking-hour amount. Starts at 33 ml per kg of body weight and adjusts for age, activity level, climate, caffeinated drinks, pregnancy, and breastfeeding.
This page documents the HTTP endpoint POST /api/tools/water-intake-calculator/execute. See the MCP reference →
Call it over REST
POST https://api.findutils.com/api/tools/water-intake-calculator/execute · no API keys · 60 requests/min per IP
Execute — verified arguments
curl -X POST https://api.findutils.com/api/tools/water-intake-calculator/execute \
-H "Content-Type: application/json" \
-d '{
"weight": 70,
"age": 30,
"caffeine_drinks": 2
}'Parameter schema for this endpoint
curl https://api.findutils.com/api/tools/water-intake-calculatorInput schema
| Argument | Type | Required | Description |
|---|---|---|---|
| weight | number | yes | Body weight in kg (metric) or lbs (imperial). |
| age | integer | yes | Age in years (1-120). Under 18 adds 10%, over 55 removes 5%. |
| unit_system | string (metric | imperial) | no | Unit system for weight. Default: "metric". |
| activity_level | string (sedentary | light | moderate | active | very_active) | no | Activity multiplier: sedentary 1.0, light 1.1, moderate 1.2, active 1.35, very_active 1.5. Default: "moderate". |
| climate | string (cold | moderate | hot | very_hot) | no | Climate multiplier: cold 0.95, moderate 1.0, hot 1.15, very_hot 1.3. Default: "moderate". |
| caffeine_drinks | integer | no | Caffeinated drinks per day (0-20). Each adds 350 ml. Default: 0. |
| pregnant | boolean | no | Adds 300 ml when true. Default: false. |
| breastfeeding | boolean | no | Adds 700 ml when true. Default: false. |
Example arguments (verified)
{
"weight": 70,
"age": 30,
"caffeine_drinks": 2
}Also an MCP tool
Claude, Cursor, and any MCP client can call this tool as
findutils:water_intake_calculator after one connect command.
Connect once
claude mcp add findutils --transport http https://mcp.findutils.com/More Calculators tools
Bmi Calculate
Compute Body Mass Index (BMI) with metric (kg/cm) or imperial (lb/in) units.
Body Fat Calculator
Estimate body fat percentage, fat mass, lean mass, BMI, and a body-composition category.
Carbon Footprint Calculator
Estimate an annual personal carbon footprint in tonnes of CO2 from home energy, transportation, and lifestyle, with a per-category breakdown
Chmod Calculate
Convert between numeric (755) and symbolic (rwxr-xr-x) Unix file permissions.
Cloudflare Cost Calculate
Estimate monthly Cloudflare developer platform costs (Workers, D1, R2, KV, Durable Objects) under free or $5 Workers Paid plans.
Daily Habit Calculator
Calculate how a daily habit adds up over a week, a month (30 days), a year (365 days), or a custom date range: total units, total cost, and
Gcd Calculate
Greatest Common Divisor (GCD) and Least Common Multiple (LCM) of two non-negative integers.
Llm Requirements Calculator
Estimate the VRAM, system RAM, and disk space needed to run an open-weight LLM locally, and which common GPUs and Macs it fits on.