Hyperinflation calculator
See how fast prices run away when inflation is counted per month: the yearly rate, how many days prices take to double, where a price ends up and what your cash still buys. Free, no sign-up, nothing leaves your browser.
The starting rate is 50% a month, the line Phillip Cagan used to define hyperinflation. This assumes the rate stays the same every month, which real hyperinflations rarely do.
What counts as hyperinflation
Hyperinflation is extremely fast inflation, where prices rise so quickly that money loses most of its value within months or even days. A common definition, from the economist Phillip Cagan, is prices rising by more than 50% in a single month.
How people cope
In hyperinflation, people swap local cash for goods, foreign currencies such as US dollars, or other stores of value as quickly as possible. Businesses reprice constantly, and many start quoting prices in a foreign currency.
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