FinanceMAINTAINED1 token / call

Inflation API

US inflation, answered the way people actually ask: what is $100 from 1990 worth today? ($246.32.) Built on the official BLS Consumer Price Index — 405,747 monthly and annual values across 726 US-average series, the all-items index back to 1913 and granular categories from eggs to gasoline to rent — refreshed daily so each mid-month CPI release lands automatically. The calculator endpoint converts any amount between any two years or months since 1913; the rate endpoint returns year-over-year inflation for any period (2022: 8.0%, June 2022: 9.1% — matching BLS published figures exactly) for the headline index or any category; the history endpoint returns a century of annual inflation rates in one call; and raw CPI series are queryable for charting. A dollar from 1913 resolves to $32.52. Built for fintech and payroll products, pricing and contract-escalation tools, real-estate and salary calculators, journalism and education. Public-domain BLS data, self-hosted — no third-party calls at request time.

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response.json

{
  "ok": true,
  "amount": 100,
  "from": {
    "year": 1990,
    "month": 6,
    "cpi": 129.9
  },
  "to": {
    "year": 2025,
    "month": 6,
    "cpi": 322.561
  },
  "adjusted_amount": 248.31,
  "factor": 2.4831,
  "cumulative_inflation_pct": 148.31
}

6endpoints

1tokens / call

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6endpoints

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import axios from 'axios';

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  '{API_URL}',
  { headers: { 'X-Api-Key': process.env.API_KEY } }
);

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import axios from 'axios';

const url = '{API_URL}';
const { data } = await axios.get(url, {
  headers: { 'X-Api-Key': 'YOUR_API_KEY' }
});

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