Historical Inflation Calculator (Any Country)

About the Historical Inflation Calculator (Any Country)

Find out what an amount of money from one year is worth in another — what ₹100 from 1990 buys today, what a 1975 salary is in today’s money, or what a price from 2025 was worth in 2000. The calculator uses official consumer price indices bundled with the page: the World Bank’s annual CPI for 191 countries, many of them from 1960, and the US Bureau of Labor Statistics’ CPI-U for the United States, month by month from January 1913.

You get the amount in the other year’s money, the cumulative inflation, the average yearly rate, a chart and a year-by-year table you can download. Old currencies are taken into account: Deutsche Mark or French franc prices come out in euros at the European Central Bank’s fixed rates, old Polish złoty, old Turkish lira and Australian pounds at their official conversion rates, and where a country changed its money at a rate not built in here — the Mexican new peso of 1993, for example — the page says so instead of showing a misleading figure. The data comes with the page, so the calculator works offline and nothing you type is sent anywhere.

Common uses

• Comparing an old salary, rent, fee or house price with today’s money.
• Checking how much a pension or a fixed deposit lost to inflation.
• Putting historical prices in a book, article or school project into today’s terms.
• Comparing inflation in two countries over the same years.

The calculation

• Value in the other year = amount × CPI(other year) ÷ CPI(starting year).
• Cumulative inflation = CPI(later) ÷ CPI(earlier) − 1.
• Average a year = (CPI(later) ÷ CPI(earlier))^(1 ÷ number of years) − 1.

India’s World Bank CPI was 54.34 in 2000 and 233.06 in 2025 (2010 = 100), so ₹100 in 2000 is ₹100 × 233.06 ÷ 54.34 = ₹428.91 in 2025: prices rose 328.9%, or 6.0% a year on average.

Where the data comes from

• World Bank — World Development Indicators, indicator FP.CPI.TOTL, “Consumer price index (2010 = 100)”, licensed CC BY 4.0. Annual figures for 191 economies; the World Bank last updated the series. Most countries have data up to 2025; some series start later than 1960 or have gaps, and the calculator tells you when a year has no figure.
• US Bureau of Labor Statistics — CPI-U, U.S. city average, all items, not seasonally adjusted (1982–84 = 100), series CUUR0000SA0, public domain: monthly from January 1913 to August 2026, and BLS’s published annual averages. BLS published no index for October 2025 (“data unavailable due to the 2025 lapse in appropriations”), so that month cannot be chosen.

The data is bundled with the page when the site is built; it does not update by itself.

Old currencies: euro changeovers, redenominations and decimalisation

A price index runs on through a change of currency, but the money does not: 100 old Polish złoty of 1990 were worth one hundredth of a złoty after 1 January 1995. An amount is taken to be in the money of its year, and the page names that currency under the amount.

• Converted at the official rate: the 21 euro area countries, at the ECB’s fixed rates from the year euro notes and coins arrived — 1.95583 Deutsche Mark, 6.55957 French francs or 340.750 Greek drachmas to the euro, for example (ECB); Poland, 10,000 old złoty to 1 złoty from 1 January 1995 (Act of 7 July 1994, Art. 1); Türkiye, 1,000,000 old lira to 1 new lira from 1 January 2005 (Law No. 5083, Art. 2); Australia, £1 = $2 from 14 February 1966 (Currency Act 1965, s 8(4)); and Brazil’s cruzado (1986), new cruzado (1989), cruzeiro (1990) and cruzeiro real (1993), each at the rate in its law (Planalto). Where an old amount could be in either currency — euro-area prices in 1999–2001, or 1986, 1989, 1990 and 1993 in Brazil — or is already in today’s money, choose which under The amount is in.

• Flagged, not converted: 65 other changes in 51 countries between 1961 and 2022 — Mexico’s new peso, Russia’s rouble of 1998, Romania’s new leu, Brazil’s real of 1994, the decimal currencies of New Zealand and South Africa and many more; the replaced currency codes are those in ISO 4217 List Three (SIX). Their conversion rates are not built in, so when your two years fall on either side of such a change the page names it and shows plain numbers: convert an old amount into the newer currency at the official rate first, then enter it with a later year.

Where prices changed more than a thousandfold and no change is listed, the page also warns, because a redenomination may be missing from the list.

What a national CPI does and does not tell you

The CPI measures the average change in prices of a basket of consumer goods and services across a country. Your own costs — school fees, rent, medical bills — may have risen faster or slower. CPI also says nothing about incomes or about prices of houses or shares. For India’s capital gains tax, the official measure is the Cost Inflation Index, not the CPI: use the cost inflation index calculator. To project future prices at a rate you choose, use the inflation calculator.

Limitations

• Annual averages for the World Bank countries; monthly figures only for the United States.
• The bundled data has the dates shown and does not update by itself; statistical offices sometimes revise past figures.
• Old currencies are converted only where the official rate is built in (the euro, Poland 1995, Türkiye 2005, Australia 1966 and Brazil 1986–1993); other changes are flagged, and you convert those amounts yourself.
• A national average: it can differ a lot from the inflation of a particular city, product or household.

Privacy

Everything happens in your browser. What you enter or open here is not uploaded or stored by MySmartCoPilot.