ForHosting KIT · Developer Utilities

GDP deflator calculator

The GDP deflator is the standard macroeconomics measure of the overall price level of goods and services produced in an economy: it compares nominal GDP valued at current prices with real GDP valued at constant base-year prices, then scales the ratio by one hundred so the base year itself reads one hundred.

● BetaFree · in your browser

Run — free How it works & API

Use it from WebAPIEmailTelegramApp soon

Students, tutors, and exam writers need a fast, deterministic way to turn any valid nominal–real pair into that index without mixing it up with CPI baskets or year-over-year inflation rates. This GDP deflator calculator accepts positive nominal and real GDP figures in the same currency units, returns the unitless ratio, the deflator index, how many percentage points the index sits above or below the base of one hundred, and a short formula string you can place next to the answer. The same pure analytic path powers the free browser widget and the API, so homework checks, LMS auto-graders, and spreadsheet replacements never disagree on a two-line identity that principles courses introduce right after defining real GDP.

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/econ/gdp-deflator

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/econ/gdp-deflator \
  -H "Authorization: Bearer $KIT_KEY" \
  -H "Content-Type: application/json" \
  -d '{"nominal_gdp":1100,"real_gdp":1000}'

const res = await fetch("https://api.kit.forhosting.com/econ/gdp-deflator", {
  method: "POST",
  headers: {
    "Authorization": `Bearer ${process.env.KIT_KEY}`,
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    "nominal_gdp": 1100,
    "real_gdp": 1000
  })
});
const { task_id } = await res.json();

import os, requests

res = requests.post(
    "https://api.kit.forhosting.com/econ/gdp-deflator",
    headers={"Authorization": f"Bearer {os.environ['KIT_KEY']}"},
    json={
    "nominal_gdp": 1100,
    "real_gdp": 1000
},
)
task_id = res.json()["task_id"]

<?php
$res = file_get_contents("https://api.kit.forhosting.com/econ/gdp-deflator", false, stream_context_create([
  "http" => [
    "method"  => "POST",
    "header"  => "Authorization: Bearer " . getenv("KIT_KEY") . "\r\nContent-Type: application/json",
    "content" => '{"nominal_gdp":1100,"real_gdp":1000}',
  ],
]));
$task = json_decode($res, true);

body := bytes.NewBufferString(`{"nominal_gdp":1100,"real_gdp":1000}`)
req, _ := http.NewRequest("POST", "https://api.kit.forhosting.com/econ/gdp-deflator", body)
req.Header.Set("Authorization", "Bearer "+os.Getenv("KIT_KEY"))
req.Header.Set("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)

Example request

{
  "nominal_gdp": 1100,
  "real_gdp": 1000
}

Example response

{
  "task_id": "tsk_a1b2c3d4e5f6a1b2c3d4e5f6",
  "type": "econ.gdp_deflator",
  "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 →