Jack Tools

Inflation Calculator

Estimate how inflation could affect the future buying power of your money over time.

Enter inflation details

£
%
yrs
£

This is an estimate only. Real inflation changes over time, so this calculator is best used as a simple projection rather than a forecast.

Future cost of today’s amount
£0.00
Today’s buying power of target amount: £0.00
Inflation increase
£0.00
Percentage increase
0.00%
Buying power lost
£0.00
Today’s value of target
£0.00

Inflation breakdown

Current amount £0.00
Inflation rate 0%
Time period 0 years
Future target amount £0.00

How This Inflation Calculator Works

This inflation calculator estimates how the value of money changes over time when prices rise each year.

It works by applying an annual inflation rate across the number of years you enter, showing how much more money may be needed in future to buy the same thing.

The calculator also shows the reverse view by estimating the present-day buying power of a future amount, helping you understand how inflation can reduce purchasing power over time.

This makes it useful for planning savings targets, future spending goals, and understanding the long-term effect of rising prices.

Current amount The amount of money you want to project forward through inflation.
Inflation rate The annual percentage increase used to estimate rising prices.
Years The number of years over which inflation is applied.
Future target A future amount used to estimate what it may be worth in today’s money.
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Example Inflation Scenarios

£1,000 today
Inflation2%
Years5
Future costHigher
Small price drift
£10,000 today
Inflation3%
Years10
Future costNoticeably higher
Steady erosion
£25,000 today
Inflation4%
Years15
Future costMuch higher
Strong inflation effect
Future £10,000
Inflation3%
Years20
Today’s valueLower
Reduced buying power

Inflation Calculator FAQs

Inflation is the rate at which prices rise over time. When inflation increases, the same amount of money generally buys less than it did before.
Inflation matters because it affects the real buying power of money. Even if the number in your bank account stays the same, what that money can actually buy may fall over time.
Future cost is the amount of money that may be needed in the future to buy something that costs a certain amount today, assuming inflation continues at the chosen rate.
This shows what a future amount is worth in today’s money. It helps explain how inflation reduces purchasing power over time.
No. This calculator is only a simple estimate. Real inflation changes year by year, so actual future price changes may be higher or lower.
Yes. A savings target that seems enough today may need to be much larger in future if inflation continues to push prices higher over time.

Related tools

Savings Calculator Project savings growth alongside inflation impact. Compound Interest Calculator See whether returns can outpace inflation. Salary After Tax Calculator Compare income with future buying power.