Calculator
Inflation calculator
Calculate how money needs and purchasing power change under an assumed annual inflation rate.
Calculate inflation
The inflation rate is a constant model assumption, not a forecast.
Result
Amount needed in the future
18,061.11
With constant inflation of 3% per year, about 18,061.11 will be needed in 20 years to have the same purchasing power as today.
Money need and purchasing power over time
How this inflation calculator works
Inflation means that the same amount of money can buy fewer goods and services over time. This calculator assumes a constant rate entered by you and uses no historical or current data. Actual inflation can fluctuate.
Scope
- ✓Future amount shows the money needed later to preserve today’s purchasing power.
- ✓Purchasing power is expressed in today’s money.
- ✓This calculator is not a forecast or investment advice.
Frequently asked questions
What does the inflation calculator calculate?
It calculates future money need, remaining purchasing power and purchasing power loss for your chosen rate.
What is purchasing power?
Purchasing power describes how many goods and services a money amount can buy.
How is future money need calculated?
Today’s amount is multiplied by (1 + annual inflation rate) raised to the period.
What is purchasing power loss?
It is the difference between today’s amount and its future purchasing power expressed in today’s money.
What happens at 0% inflation?
Amount and purchasing power remain unchanged and loss is 0%.
Can I enter negative inflation?
No. Negative values are rejected in this version.
Does the calculator use real inflation data?
No. It uses only your inputs.
Is the calculated inflation a forecast?
No. It is a constant mathematical assumption.
Why does the required amount rise?
With inflation, each monetary unit buys less, so more money is needed for the same purchasing power.
Why does purchasing power fall?
The current amount is divided by the inflation factor, representing less future purchasing power.