Inflation-adjusted purchasing power calculator
Estimate what future money is worth under assumed inflation.
Your inputs
Your results
Ready when you areYour results will appear here.
Compare two scenarios.
Run the tool, then save A or B to compare headline results and entered values. Keep currencies, periods and assumptions consistent.
Saved scenarios stay in this browser until you clear them. Reset clears the working result; it keeps saved scenarios. Use Clear saved scenarios on a shared device.
Run the tool to save your first scenario.
How it works
Apply a chosen constant inflation factor to show the future nominal amount needed for today’s buying power and the real value of an unchanged future amount.
Read the source reference ↗A few things to know
No live or historical price index is fetched. Personal spending inflation can differ. Negative assumptions represent deflation; results do not include investment growth.
Results use your inputs. Keep all money amounts in the same currency.
When to use this tool
Distinguish a money amount from what it can buy. Compounding an inflation assumption explains why an unchanged nominal balance can buy less.
- Compare nominal and real amounts.
- Illustrate inflation scenarios.
- Plan a future price assumption.
How to use inflation-adjusted purchasing power calculator
Prepare the inputs
Enter the quantities and units used by your source.
Choose the settings
Choose the assumptions and compare them with your actual situation.
Review and export
Review the result, then download the calculation report.
Try the supplied example
Inputs
amount: 10000; inflation: 3; years: 10
Result
At 3% for 10 years, 10,000 today needs about 13,439.16 in future nominal money.
What it means
This is a chosen inflation scenario, not an observed price index.
Common mistakes to avoid
Do not label an assumed rate as historical CPI
Do not label an assumed rate as historical CPI.
Your spending basket can differ from a broad index
Your spending basket can differ from a broad index.
Frequently asked questions
Definitions, edge cases, and practical next steps for this tool. Search all tool FAQs ↗
Is this historical CPI?
No. You supply a constant annual inflation assumption.
What is nominal money?
The face-value amount before adjusting for price changes.
What is real purchasing power?
The amount expressed in prices at the starting date.
Can inflation be negative?
Yes. A negative assumption represents deflation.
Are investment returns included?
No. This tool isolates the price-level effect.
Does this apply to every household?
Household spending patterns and price changes differ.
Are my inputs uploaded or stored?
Processing happens locally in your browser. This tool does not upload inputs. Downloads stay on your device; sharing or opening them in another service is your choice.
What should I check before using the output?
No live or historical price index is fetched. Personal spending inflation can differ. Negative assumptions represent deflation; results do not include investment growth.
Explore the topic in the blog
Sources and method
Use the references below to check definitions and platform guidance. The model’s scope and limits are explained above. Read our editorial standards.