Inflation Calculator
Inflation Calculator with U.S. CPI Data
Calculates the equivalent value of the U.S. dollar in any month from 1913 to 2026. Calculations are based on the average Consumer Price Index (CPI) data for all urban consumers in the U.S.
Forward Flat Rate Inflation Calculator
Calculates an inflation based on a certain average inflation rate after some years.
Backward Flat Rate Inflation Calculator
Calculates the equivalent purchasing power of an amount some years ago based on a certain average inflation rate.
Our Inflation Calculator draws on U.S. historical Consumer Price Index (CPI) figures to translate the buying power of the dollar across years. Just input a sum and its original year, then specify the target year for the inflation‑adjusted result.
You can also try the Forward Flat‑Rate and Backward Flat‑Rate Inflation Calculators for hypothetical cases, where you set an amount, a span of years and an assumed inflation rate to see the adjusted figure. In the U.S. and most advanced economies, inflation typically averages about 3 %, but you may modify this figure to suit your scenario.
Historical Inflation Rate for the U.S.
The U.S. Bureau of Labor Statistics releases the Consumer Price Index each month, allowing us to calculate the inflation rate. Below you’ll find the historical inflation figures for the United States, available from 2013 onward.
What is Inflation?
Inflation describes a broad rise in the prices of goods and services, which erodes money’s purchasing power. It can be driven artificially when authorities—such as central banks, monarchs, or governments—adjust the money supply. In theory, injecting more cash into an economy dilutes the value of each unit. Inflation is usually expressed as the percentage price change over a twelve‑month period, and many developed nations aim for a 2‑3 % rate through fiscal and monetary measures.
Hyperinflation
Hyperinflation refers to runaway price increases that quickly destroy a currency’s real value, typically triggered by a massive surge in money supply without comparable growth in output. Notable episodes include early‑1990s Ukraine and Brazil between 1980 and 1994, where prolonged hyperinflation rendered their money nearly worthless, forcing citizens to rely on stable foreign currencies and hoard tangible assets like gold. Another classic case is Germany’s 1920s crisis, when the government financed WWI reparations and war costs by printing money, causing the Papiermark to collapse—prices doubled roughly every three days, and the currency was even burned for fuel. The resulting scarcity and poverty drove many to flee.
Although hyperinflation is devastating, a modest, steady rise in prices is considered beneficial. When money is expected to lose value over time, consumers are motivated to spend rather than hoard, which helps sustain economic activity.
Deflation
Inflation’s impact depends on its intensity; moderate levels can be manageable, whereas severe inflation is problematic. Conversely, deflation—a general decline in prices—is rarely desirable. Falling prices discourage spending because money is expected to buy more in the future, which can stall or reverse economic growth. The Great Depression illustrated a deflationary spiral, where decreasing prices cut profits, leading to reduced spending, further price drops, and a vicious cycle that is hard to break.
Why Inflation Occurs?
Macroeconomic theories try to explain why inflation occurs and how best to regulate it. Keynesian economics, which served as the standard economic model in developed nations for most of the twentieth century and is still widely used today, says that when there are gaping imbalances between the supply and demand of goods and services, large-scale inflation or deflation can occur.
- Cost‑push inflation — For example, a spike in oil prices due to geopolitical unrest raises production costs across many sectors, prompting businesses to lift prices to cover the higher expense.
- Demand‑pull inflation — Occurs when aggregate demand outpaces an economy’s capacity to supply goods and services, so excess money chases a limited stock, driving prices upward.
- Built‑in inflation — Also called “hangover” inflation, this form stems from past price‑wage dynamics that persist, intertwining with cost‑push and demand‑pull factors. Expectations of future price rises and the wage‑price spiral help sustain it.
The Monetarists
A cohort of economists headed by Milton Friedman, known as Monetarists, argue that the amount of money in circulation drives inflation more than market forces. For example, the Federal Reserve—the United States' central bank—may expand the money base by printing currency or shrink it by selling Treasury securities. Governmental bodies are pivotal in keeping their currencies stable through monetary policy. Their viewpoint stems from the Quantity Theory of Money, which links changes in the money supply to shifts in the currency's purchasing power. The Equation of Exchange illustrates this relationship.
MV = PY
V = velocity of money, defined as how many times a unit of currency is involved in transfers per year
P = price level
Y = economic output of goods and services
The Equation of Exchange expresses total expenditures (M × V) as equal to total output value (P × Y). Economists typically treat the velocity of money (V) and real output (Y) as relatively steady, because the number of transactions and the economy’s productive capacity fluctuate far less than the money supply or price level. Holding V and Y constant leaves the money stock (M) and the price level (P) as the variables, leading to the Quantity Theory of Money, which posits a direct proportionality between the money supply and the price level.
In practice policymakers blend Keynesian and Monetarist tools. While the two schools clash on several points, each acknowledges the merits of the other's approach. Keynesians recognise that money supply matters, and Monetarists admit that influencing aggregate demand can be useful for taming inflation.
How is Inflation Calculated?
In the United States, the Department of Labor compiles the annual inflation figures. It does so by assembling a representative basket of consumer goods and services, tracking their prices over time, and then applying weighted averages and statistical formulas. The resulting figure is the Consumer Price Index (CPI).
For instance, to compute the inflation rate between January 2016 and January 2017, you would retrieve the CPI values for both months. Those historical CPI numbers are available on the Bureau of Labor Statistics website.
Jan. 2016: 236.916
Jan. 2017: 242.839
Calculate the difference:
242.839 - 236.916 = 5.923
Calculate the ratio of this difference to the former CPI:
|
= 2.5% |
The inflation from January 2016 to January 2017 was 2.5%. When the CPI for the former period is greater than the latter, the result is deflation rather than inflation.
Problems with Measuring Inflation
While the example given above to calculate CPI might portray inflation as a simple process, in the real world, measuring the true inflation of currencies can prove to be quite difficult.
- Consider the basket of goods and services used to gauge inflation across periods. It can be difficult to tell whether price movements stem from genuine inflation or from quality improvements—for example, is a computer’s higher price due to inflation or because of new technological features?
- Sharp swings in the price of specific items can distort inflation readings. A temporary surge in oil prices, for example, may push the headline inflation rate upward, creating a misleading impression of a sustained increase.
- Inflation does not affect every group equally. Higher fuel costs might hit long‑haul truck drivers hard, while stay‑at‑home parents may feel a smaller impact.
- Although the CPI is the most common gauge of inflation, several alternative indices exist for specialized uses. In the EU, the CPI was formerly called the Harmonised Index of Consumer Prices (HICP). An enhanced version, CPIH, adds owner‑occupier housing costs such as mortgage interest. CPIY strips out indirect taxes like VAT and excise duties, giving a view of price change without tax effects. Excise duties are taxes on domestically produced goods. The CPI for All Urban Consumers less Food and Energy (CPILFENS) removes the most volatile components—food and energy—from the basket, yielding a smoother inflation signal. Weather‑driven fluctuations in agricultural output, for instance, can cause sharp food‑price swings that would otherwise distort the overall index.
How to Beat Inflation?
Inflation hurts those who keep large sums of cash idle. With a 2.5 % inflation rate, a non‑interest‑bearing checking account holding $50,000 would lose $1,250 of real purchasing power over a year. This illustrates why many financial advisers recommend putting money to work—through spending, investing, or other vehicles—rather than letting it sit. In an environment of moderate, ongoing inflation, the sensible choice is to deploy capital rather than accept the inevitable erosion of its value.
There’s no fool‑proof way to shield your wealth from inflation. Many turn to assets such as real‑estate, equities, mutual funds, commodities, Treasury Inflation‑Protected Securities (TIPS), artwork, antiques and the like as a hedge. Each of these carries its own advantages and drawbacks, so most investors diversify across several categories to spread risk. While commodities and TIPS get the most attention due to their direct link to price changes, they aren’t automatically the optimal protection.
Commodities
Putting money into commodities—such as precious metals like gold and silver, energy resources like oil, base metals like copper, or agricultural products—has long been a go‑to strategy for inflation protection, since these goods possess inherent worth. When currency purchasing power erodes, demand for tangible assets often rises, pushing their prices up. Gold, in particular, has served as a trusted store of value for centuries because it is scarce and easy to hold. Other metals can also serve, but gold remains the most widely favored hedge.
TIPS
In the United States, investors can buy Treasury Inflation‑Protected Securities (TIPS), a type of government bond designed to keep pace with inflation. The bond’s principal adjusts with consumer‑price indexes like the CPI, so its value rises when prices do, making it a practical shield during inflationary spells. Although TIPS usually represent a modest slice of most portfolios, those who want additional safety can increase their allocation. Since TIPS move independently of equities, they also add diversification. Their longer maturities can generate a term premium while still safeguarding against inflation, a benefit not shared by conventional bonds. Comparable inflation‑linked securities are available abroad, for example the UK’s index‑linked gilts, Mexico’s Udibonos, or Germany’s Bund‑index bonds.