To make the numbers easier to grasp, they have provided an alternative way to express them.
They calculate how long it would take for prices to double, if inflation persists at its peak monthly pace.
Their results provide a kind of "half-life" for a currency, showing how long it takes for it to lose 50% of its value
(relative to the country's consumer goods and services).
This alternative calculation turns the astronomical percentages of hyperinflation into more mundane intervals of time:
millions into days and quintillions into hours. In Venezuela's case it took less than 19 days in August for the currency to lose half its value.
In the worst month of Hungary's hyperinflation, it took just 15 hours.
"Soon the depreciation of the currency advanced so rapidly that it not only was felt from day to day,
but even from hour to hour," notes one historian of the episode.
That ever-present feeling has one consolation: it can make hyperinflations quick to end.
Of the 57 episodes identified by Messrs Hanke and Krus, many lasted less than a year.
Because people are always thinking about prices, their inflation expectations are unusually fluid.
If the government can convince them that it has stopped printing and spending money so recklessly,
shops, businesses and workers will be quick to act on that conviction, raising their prices and wages more conservatively.
In high but not hyperinflationary scenarios, by contrast, people become accustomed to rapid price increases and expect them to continue.
That makes it more likely they will do so. Hyperinflation is so disruptive no one can get used to it.