ForHosting KIT · Developer Utilities

Daily water bottle refill calculator

This daily water bottle refill calculator turns a water intake target and a bottle capacity into a practical whole-number count.

● BetaFree · in your browser

Run — free How it works & API

Use it from WebAPIEmailTelegramApp soon

Enter both amounts in milliliters, and it divides the daily goal by the bottle size, then rounds up so even a partial final bottle is counted. Here, a refill means each bottleful used toward the goal, including the first fill of the day. The result helps translate an abstract hydration target into a simple number you can track.

How to use it

Enter your values in the form above. The tool checks them before calculating and shows the result on the same page.

Check your inputs

Use the labels and units shown next to each field. If something is missing or outside the allowed range, the page points to the field to fix.

Use it again or automate it

Use the browser tool for individual checks and the API when you need the same capability in an automated workflow.

What you can do with it

Get an answer now

Enter one set of values and see the result without building a spreadsheet or script.

Compare scenarios

Change one value at a time and rerun the calculation to understand what affects the result.

Automate repeated work

Use the API when the same calculation needs to run inside your product or workflow.

FAQ

How is the refill count calculated?

The daily goal is divided by bottle capacity and rounded up to a whole number, so a partial final bottle counts.

Does the count include the first bottle of the day?

Yes. refill_count means every bottleful used toward the goal, including the first fill. To count only later trips back to the tap, subtract one from a positive result.

What units should I enter?

Enter both the daily goal and bottle capacity in milliliters. Convert other volume units before using the calculator.

Why is the result rounded up?

Any remainder requires another bottle fill to reach the goal, although you may need to drink only part of that final fill.

What happens if bottle capacity is zero or negative?

The request returns an invalid_input error because a bottle must have a positive capacity for the division to be meaningful.

Does this calculator recommend how much water I should drink?

No. It converts the goal you supply into bottlefuls; it does not determine a personal hydration target or provide medical advice.

What does the API request cost?

Each API request costs $0.002. The calculation can also run in your browser.

For developers — API access

Everything on this page is available programmatically. This section is for teams who want to wire it into their own systems; everyone else can just use the tool above.

API endpoint

POSThttps://api.kit.forhosting.com/final3/water-bottle-daily-refill-count

Prefer to automate it? One authenticated POST creates the task; the result comes back by webhook or a signed link. The same capability also runs here on the web, by email and from Telegram — and soon from our app too.

Call it from your stack

curl -X POST https://api.kit.forhosting.com/final3/water-bottle-daily-refill-count \
  -H "Authorization: Bearer $KIT_KEY" \
  -H "Content-Type: application/json" \
  -d '{"daily_goal":2000,"bottle_capacity":750}'

const res = await fetch("https://api.kit.forhosting.com/final3/water-bottle-daily-refill-count", {
  method: "POST",
  headers: {
    "Authorization": `Bearer ${process.env.KIT_KEY}`,
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    "daily_goal": 2000,
    "bottle_capacity": 750
  })
});
const { task_id } = await res.json();

import os, requests

res = requests.post(
    "https://api.kit.forhosting.com/final3/water-bottle-daily-refill-count",
    headers={"Authorization": f"Bearer {os.environ['KIT_KEY']}"},
    json={
    "daily_goal": 2000,
    "bottle_capacity": 750
},
)
task_id = res.json()["task_id"]

<?php
$res = file_get_contents("https://api.kit.forhosting.com/final3/water-bottle-daily-refill-count", false, stream_context_create([
  "http" => [
    "method"  => "POST",
    "header"  => "Authorization: Bearer " . getenv("KIT_KEY") . "\r\nContent-Type: application/json",
    "content" => '{"daily_goal":2000,"bottle_capacity":750}',
  ],
]));
$task = json_decode($res, true);

body := bytes.NewBufferString(`{"daily_goal":2000,"bottle_capacity":750}`)
req, _ := http.NewRequest("POST", "https://api.kit.forhosting.com/final3/water-bottle-daily-refill-count", body)
req.Header.Set("Authorization", "Bearer "+os.Getenv("KIT_KEY"))
req.Header.Set("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)

Example request

{
  "daily_goal": 2000,
  "bottle_capacity": 750
}

Example response

{
  "task_id": "tsk_a1b2c3d4e5f6a1b2c3d4e5f6",
  "type": "final3.water_bottle_daily_refill_count",
  "status": "queued",
  "_links": {
    "result": "/tasks/tsk_…/result"
  }
}

The API is asynchronous: the call returns a task_id immediately and the result arrives by webhook. Polling is capped at 1 req/s per task.

Pricing

Per request$0.002

Published price — no tokens, no invented credits. A failed task is never charged.

Errors

HTTP	Code	Meaning
`401`	`unauthorized`	Missing or invalid API key.
`402`	`insufficient_balance`	Your balance doesn't cover the task price.
`404`	`unknown_type`	That task type doesn't exist.
`429`	`rate_limited`	Too many requests. Use the webhook instead of polling.

Read the full KIT documentation →