ForHosting KIT · Developer Utilities

Subscription annual cost calculator

Streaming apps, cloud storage, gym memberships, software seats, and delivery clubs rarely share the same billing cadence, so a quick glance at your bank statement never answers the real question: what does this stack cost every month and every year on a fair basis.

● BetaFree · in your browser

Run — free How it works & API

Use it from WebAPIEmailTelegramApp soon

This subscription annual cost calculator takes a list of services with each amount and billing cycle, converts every line into normalized monthly and annual figures using fixed period factors, and returns the summed household or team total in clean JSON. The math is fully deterministic pure arithmetic with no network calls, random seeds, or wall-clock drift, so homework demos, budget bots, and continuous-integration fixtures can pin identical outputs. A negative amount is rejected with a clear invalid input error because a cost ledger does not treat refunds as subscription charges. The browser widget runs free on your device; the prepaid API charges $0.002 per successful item when servers and SDKs need the same contract.

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 do I use this capability?

Complete the fields above and run it on this page. The form highlights anything that needs attention.

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/life/subscription-annual

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/life/subscription-annual \
  -H "Authorization: Bearer $KIT_KEY" \
  -H "Content-Type: application/json" \
  -d '{"subscriptions":[{"name":"Streaming","amount":15.99,"cycle":"monthly"},{"name":"Cloud storage","amount":99.99,"cycle":"yearly"},{"name":"News","amount":12,"cycle":"monthly"}]}'

const res = await fetch("https://api.kit.forhosting.com/life/subscription-annual", {
  method: "POST",
  headers: {
    "Authorization": `Bearer ${process.env.KIT_KEY}`,
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    "subscriptions": [
      {
        "name": "Streaming",
        "amount": 15.99,
        "cycle": "monthly"
      },
      {
        "name": "Cloud storage",
        "amount": 99.99,
        "cycle": "yearly"
      },
      {
        "name": "News",
        "amount": 12,
        "cycle": "monthly"
      }
    ]
  })
});
const { task_id } = await res.json();

import os, requests

res = requests.post(
    "https://api.kit.forhosting.com/life/subscription-annual",
    headers={"Authorization": f"Bearer {os.environ['KIT_KEY']}"},
    json={
    "subscriptions": [
        {
            "name": "Streaming",
            "amount": 15.99,
            "cycle": "monthly"
        },
        {
            "name": "Cloud storage",
            "amount": 99.99,
            "cycle": "yearly"
        },
        {
            "name": "News",
            "amount": 12,
            "cycle": "monthly"
        }
    ]
},
)
task_id = res.json()["task_id"]

<?php
$res = file_get_contents("https://api.kit.forhosting.com/life/subscription-annual", false, stream_context_create([
  "http" => [
    "method"  => "POST",
    "header"  => "Authorization: Bearer " . getenv("KIT_KEY") . "\r\nContent-Type: application/json",
    "content" => '{"subscriptions":[{"name":"Streaming","amount":15.99,"cycle":"monthly"},{"name":"Cloud storage","amount":99.99,"cycle":"yearly"},{"name":"News","amount":12,"cycle":"monthly"}]}',
  ],
]));
$task = json_decode($res, true);

body := bytes.NewBufferString(`{"subscriptions":[{"name":"Streaming","amount":15.99,"cycle":"monthly"},{"name":"Cloud storage","amount":99.99,"cycle":"yearly"},{"name":"News","amount":12,"cycle":"monthly"}]}`)
req, _ := http.NewRequest("POST", "https://api.kit.forhosting.com/life/subscription-annual", body)
req.Header.Set("Authorization", "Bearer "+os.Getenv("KIT_KEY"))
req.Header.Set("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)

Example request

{
  "subscriptions": [
    {
      "name": "Streaming",
      "amount": 15.99,
      "cycle": "monthly"
    },
    {
      "name": "Cloud storage",
      "amount": 99.99,
      "cycle": "yearly"
    },
    {
      "name": "News",
      "amount": 12,
      "cycle": "monthly"
    }
  ]
}

Example response

{
  "task_id": "tsk_a1b2c3d4e5f6a1b2c3d4e5f6",
  "type": "life.subscription_annual",
  "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 →

Run — free