Finance calculator
Inflation Calculator
Calculate purchasing power change over time given an inflation rate.
About the inflation calculator
The inflation calculator shows how purchasing power changes over time at a given inflation rate.
How to use this calculator
- 1
Enter current amount
Enter the current dollar amount.
- 2
Enter inflation rate
Enter the annual inflation rate.
- 3
Enter time period
Enter the number of years.
How the calculation works
Future value = amount × (1 + rate)^years. Purchasing power = amount ÷ (1 + rate)^years.
Example: 1,000 today at 3% inflation will need 1,806 in 20 years for same purchasing power.
How financial calculations work
Most finance calculators use standard formulas: amortization for loans, compound interest for savings, and present/future value for investments. Results are estimates — actual terms may vary based on lender fees, credit score, taxes, and market conditions. Always consult a financial advisor for major decisions.
Understanding key financial terms
APR (Annual Percentage Rate) includes fees and interest. APY (Annual Percentage Yield) reflects compound interest. DTI (Debt-to-Income) ratio measures monthly debt payments against gross income. Lenders typically prefer DTI below 36%. CAGR (Compound Annual Growth Rate) smooths investment returns over time.
Important limitations
This tool provides a mathematical estimate based only on the values entered. It does not account for regulations, taxes, lender fees, market conditions, or individual circumstances. Results are for planning purposes only — consult a qualified professional for regulated, medical, financial, or construction decisions.
Frequently asked questions about inflation calculator
How accurate is the inflation calculator?+
The calculation follows the displayed formula and retains full numeric precision before formatting the result.
Can I use the result professionally?+
Use it as a planning estimate. Confirm regulated, medical, financial, or construction decisions with a qualified professional.