The Consumer Price Index measures the average change over time in prices paid by urban households for a basket of goods and services. National statistics agencies recompute it each month; this calculator uses the annual averages.

Why does the answer differ by country?

Each country has its own consumption basket and its own price history. Inflation in Germany over 25 years is not the same as in the US — the calculator therefore uses the official series for whichever country you pick rather than a global average.

Which countries are supported?

Four series ship today: the United States (BLS CPI-U, 1913 onward), Germany (Destatis VPI, 1991 onward — the post-reunification series), the United Kingdom (ONS CPI, 1989 onward), and the Eurozone (Eurostat HICP, 1996 onward).

How recent is the data?

The bundled CPI table is current as of 2026-04-27 and includes annual averages through 2025. Once the next year's annual average is published by each agency, the table is refreshed.

FINFinancial

Inflation Calculator

See what an amount of money from a past year is worth in today's money, using official CPI data from the US, UK, Germany, and the Eurozone. Find out how much purchasing power inflation has eroded — and the annualized rate behind it.

Currency

Amount

From year

To year

Country

Try an example

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How It Works

Formula

\text{equivalentToday} = \text{amount} \times \frac{\text{CPI}_\text{to}}{\text{CPI}_\text{from}}

\text{annualizedRate} = \left(\frac{\text{CPI}_\text{to}}{\text{CPI}_\text{from}}\right)^{1/n} - 1

Where

$\text{CPI}_\text{from}$: Annual CPI for the source year (selected country)
$\text{CPI}_\text{to}$: Annual CPI for the target year (selected country)
$n$: Number of years between source and target year

Enter the past amount, the source year, the target year, and the country. The calculator divides the destination CPI by the source CPI to get a purchasing-power ratio, then multiplies your amount by that ratio. Cumulative inflation is the ratio minus one, expressed as a percent; the annualized rate is the geometric mean over the elapsed years.

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