Inflation Calculator

See what things may cost in the future if prices keep rising. Enter an amount today, an inflation rate and a number of years to see the future cost — and what the same cash in a drawer would buy by then.

How it works: If prices rise by the same percentage each year, an item that costs this much today will cost the amount times (1 + inflation) raised to the number of years. Cash that does not grow keeps its face value but buys less — the last row shows its shrinking buying power.

How the Inflation Calculator Works

This calculator shows how inflation quietly reduces what your money can buy over time. Enter an amount today and an annual inflation rate, and it works out what that amount would be worth in the future — or, looking backwards, what a past amount is worth in today’s money. It is a reality check for long-term plans: savings, salaries, and pensions that look fixed on paper lose purchasing power every year.

The formula mirrors compound growth, but in reverse: Future value = Present value ÷ (1 + r)^n. Here r is the annual inflation rate as a decimal and n is the number of years. A single year’s inflation barely registers, but over decades the effect compounds: at 3% inflation, money halves in buying power in about 24 years.

The estimate assumes a constant inflation rate across the whole period. Real inflation rises and falls year by year, so this is a model of steady inflation rather than a prediction. It also measures purchasing power only — it does not model wage growth, investment returns, or interest, which may partly offset inflation.

How to Use This Calculator

Enter the amount of money you want to value.
Enter the annual inflation rate you expect.
Enter the number of years.
Press Calculate.
Compare the future value with the starting amount to see how much purchasing power is lost.

Example

$10,000 today, at 3% annual inflation for 20 years, would have the purchasing power of $5,536.76 in today’s terms. In other words, you would need about $18,061.11 in 20 years’ time to buy what $10,000 buys today.

At 2% inflation over 10 years, $50,000 keeps $41,017.42 of its purchasing power. At 5% over the same period, it keeps only $30,695.66. The gap between those two rates — roughly $10,000 on $50,000 — is why central banks treat even small inflation differences as a big deal.

What Affects the Result

Inflation rate — even 1% more inflation compounds into a large difference over long periods.
Time period — the longer the horizon, the greater the erosion.
Starting amount — the erosion is proportional, so larger sums lose more in absolute terms.
Wage and investment growth — if your income or investments grow faster than inflation, you stay ahead; if not, you fall behind.
Practical tip — when planning long-term savings, always compare returns against inflation, not against zero: a 4% return at 3% inflation is only 1% real growth.

One comparison brings the point home for anyone saving for retirement. Suppose you plan to retire on $40,000 a year in today’s money and you are 30 years from retirement. At 2.5% inflation, you will need about $83,800 a year by then just to live the same lifestyle — more than double. That is not pessimism; it is the arithmetic of compounding applied to prices. It also explains why keeping long-term savings in cash is risky in its own way: cash feels safe because the number never falls, but its purchasing power falls every year. An investment returning less than inflation is losing real value even while the balance rises, which is why the retirement and investment calculators pair naturally with this one.

Looking backwards can be just as revealing. A salary of $30,000 in 2000, adjusted for average inflation of roughly 2.5% a year, is equivalent to about $52,500 today — so if your pay has not roughly kept pace, you have effectively taken a pay cut even if the number on your payslip went up. The same logic applies to old savings balances, pensions frozen years ago, and house prices quoted in different decades. Whenever you compare money across years, run it through an inflation adjustment first; otherwise you are comparing different currencies in all but name.

Inflation Calculator FAQs

What is inflation?

Inflation is the general rise in prices over time, which reduces the purchasing power of money. A 3% inflation rate means that, on average, things cost 3% more than they did a year earlier.

What inflation rate should I use?

It depends on your country and period. Many developed economies target around 2% a year, and long-run averages are often 2–3%. For planning, try both a low and a high rate to see the range of outcomes.

Does inflation affect savings and investments?

Yes. Money in a savings account earning less than inflation loses real value each year. Investments need to beat inflation to grow your purchasing power, not just your balance.

Can inflation be negative?

Yes — that is deflation, when prices fall on average. It is rarer than inflation, but the calculator handles it: a negative rate shows purchasing power rising over time.

Is this the same as a cost-of-living calculation?

Related but not identical. This calculator adjusts a single amount for general price inflation. A cost-of-living comparison also accounts for different baskets of goods and local price levels.