# InflationGlobal

> Free historical inflation calculator and data reference. InflationGlobal
> converts any amount between years to show its inflation-adjusted purchasing
> power, using official World Bank Consumer Price Index data (indicator
> FP.CPI.TOTL) for 48+ countries, generally covering 1960-2025 (exact range
> varies per country). The site is served in 8 languages: English, Spanish,
> German, French, Japanese, Russian, Korean and Chinese.

## Data

- Source: World Bank, Consumer Price Index, indicator FP.CPI.TOTL
  (https://data.worldbank.org/indicator/FP.CPI.TOTL).
- License: CC-BY 4.0 (https://creativecommons.org/licenses/by/4.0/).
- Coverage: 48+ countries; per-country date range typically starts at or
  near 1960 and runs through the most recent year the World Bank has
  published, currently 2025.
- Update cadence: refreshed periodically from the World Bank API in batches,
  not on a fixed daily schedule. The true refresh date is shown on every
  page as "Data verified: {date}" and is never a fabricated or rolling date.
- Every number on the site (totals, annual rates, decade summaries, peaks,
  rankings) is computed directly from this dataset at request time -- there
  is no separately hand-maintained inflation table.

## URL patterns

All content paths are prefixed with a 2-letter language code (en, es, de,
fr, ja, ru, ko, zh). Except for the language prefix and the localized tool
segment noted below, country-name slugs are always the English country name,
lowercase with hyphens (e.g. "united-states", "south-korea"), regardless of
the page's language.

- Calculation result: /{lang}/{amount}-{currency}-{startYear}-to-{endYear}
  e.g. /en/1000-usd-2000-to-2026
- Country comparison: /{lang}/{compare-slug}/{country-a}-vs-{country-b}
  e.g. /en/compare/united-states-vs-japan (compare-slug is localized, e.g.
  "comparar" in Spanish, "vergleichen" in German)
- Country page: /{lang}/{countries-slug}/{country}
  e.g. /en/countries/germany (countries-slug is localized, e.g. "paises" in
  Spanish, "pays" in French)
- Countries hub (index of all countries): /{lang}/{countries-slug}
- Comparisons hub (index of all comparisons): /{lang}/{compare-slug}
  e.g. /en/compare (compare-slug is localized, e.g. "comparar" in Spanish)
- Inflation rate by country (evergreen ranking): /{lang}/{global-rates-slug}
  e.g. /en/inflation-rates-by-country
- Salary adjustment calculator: /{lang}/{salary-slug}
  e.g. /en/salary-adjustment

## Key Pages

- Home / calculator: https://inflationglobal.com/en/
- About + how to cite this data: https://inflationglobal.com/en/about#cite-this
- Salary adjustment calculator: https://inflationglobal.com/en/salary-adjustment
- United States vs Canada: https://inflationglobal.com/en/compare/united-states-vs-canada
- United States vs Japan: https://inflationglobal.com/en/compare/united-states-vs-japan
- United States vs Germany: https://inflationglobal.com/en/compare/united-states-vs-germany
- United States vs Mexico: https://inflationglobal.com/en/compare/united-states-vs-mexico
- United States vs United Kingdom: https://inflationglobal.com/en/compare/united-states-vs-united-kingdom

## API

- GET /api/historical?country={ISO2}&start={YYYY}&end={YYYY}
  Read-only, public, no key required. Returns JSON:
  {"data": [{"year": 2000, "cpi": ..., "inflation_percent": ...}, ...]}
  country is a 2-letter ISO 3166-1 code (US, DE, JP, ...). Cacheable for
  24 hours; cross-origin requests are allowed (Access-Control-Allow-Origin: *).
- POST /api/calculate is the form endpoint behind the interactive
  calculator and is not intended for external/automated use.

## Citation

To cite a figure from this site, link to the specific result, comparison or
country page you used and attribute the underlying data to the World Bank.
Full citation format and guidance: https://inflationglobal.com/en/about#cite-this