How is the answer worked out?

Each round takes a documented historical price and multiplies it by today's Consumer Price Index divided by the CPI of the price's year · the standard way economists convert old money into today's money. The game shows you the multiplier.

Are the old prices real?

Yes · they are widely-cited average US prices for their year (a loaf of bread, a movie ticket, a gallon of gas, a new car, and so on), and the CPI figures come from the US Bureau of Labor Statistics.

Why is a 1950 dollar worth so much more now?

Because prices have risen almost every year since, and the increases compound. The US CPI has multiplied roughly thirteen-fold since 1950, so a 1950 dollar buys about what thirteen dollars buy today.

Is this in US dollars?

Yes · the prices and the CPI are American, so the figures are in US dollars. The underlying idea · that inflation makes old money worth more in today's terms · is the same everywhere.

Does it work offline?

Yes. PlayMemorize is a Progressive Web App, so Inflation keeps working without a connection once the page has loaded.

Inflation · 한국어 | PlayMemorize

예전에는 돈의 가치가 훨씬 높았습니다. 각 라운드는 수십 년 전 미국의 실제 물가를 보여줍니다. 오늘날의 가치로 얼마인지 맞춰보세요.

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1950년에 빵 한 덩이은(는) $0.12였습니다. 오늘날의 가치로 얼마일까요?

역사적 물가와 소비자 물가 지수는 미국 노동통계국에서 가져왔습니다. 출처 보기

팁: 한 세기의 인플레이션은 빠르게 누적됩니다 · 1950년의 1달러는 오늘날 10달러 이상의 가치가 있습니다.