Financial Calculator
Inflation Calculator
Estimate how inflation reduces the future purchasing power of money over time.
Use the Inflation Calculator
Your results
- Future purchasing power
- $0.00
- Total purchasing power lost
- $0.00
- Inflation multiplier
- 1.00x
How this calculator works
- What it does
- Estimate how inflation reduces the future purchasing power of money over time.
- Inputs used
- The estimate uses starting amount, inflation rate (%), and number of years.
- Calculation approach
- The calculator applies the relationships defined for the inflation calculator to those inputs and updates future purchasing power, total purchasing power lost, and inflation multiplier.
- How to read the result
- Treat the result as a scenario based on the values entered. Compare a few reasonable inputs and consider costs, taxes, timing, or risks that the calculator does not include.
How to Use This Calculator
- Enter Starting amount using values that match the scenario you want to evaluate.
- Enter Inflation rate (%) using values that match the scenario you want to evaluate.
- Enter Number of years using values that match the scenario you want to evaluate.
- Review the assumptions for the inflation calculator, especially rates, time periods, and optional amounts.
- Select Calculate to update the results, then adjust one input at a time to compare scenarios.
Understanding the Results
- Future purchasing power
- The future purchasing power estimated by the Inflation Calculator using starting amount, inflation rate (%), and number of years and the other values entered.
- Total purchasing power lost
- The total purchasing power lost estimated by the Inflation Calculator using starting amount, inflation rate (%), and number of years and the other values entered.
- Inflation multiplier
- A percentage or comparison measure that summarizes the relationship between the calculator's key values.
Common Mistakes
- Treating an assumed return, growth rate, inflation rate, or yield as guaranteed.
- Leaving out taxes, fees, inflation, or timing differences that can affect real-world results.
- Mixing monthly and annual figures or entering percentages in the wrong units.
- Relying on one projection instead of comparing a range of reasonable assumptions.
Worked Example
Example inputs
- Starting amount
- $100,000
- Inflation rate (%)
- 3%
- Number of years
- 20
Example results
- Future purchasing power
- $55,367.58
- Total purchasing power lost
- $44,632.42
- Inflation multiplier
- 1.81x
For this illustrative scenario, the future purchasing power is $55,367.58. Changing any input can materially change the result, so use the example as a walkthrough rather than a guarantee.
Frequently asked questions
What does future purchasing power mean?
Future purchasing power estimates what a fixed amount of money will be able to buy after inflation, expressed in today’s dollars.
How is the inflation multiplier calculated?
The calculator compounds the annual inflation rate over the selected number of years. A 1.50x multiplier means prices are estimated to be 50% higher.
Does inflation stay constant over time?
No. Actual inflation changes from year to year. This calculator uses a constant rate to provide a planning estimate.
How can investments help offset inflation?
Investments that grow faster than inflation may help preserve or increase purchasing power, although returns are never guaranteed.
Why is inflation important for retirement planning?
Even moderate inflation can materially increase future expenses, so long-term savings and retirement targets should account for reduced purchasing power.
What does the Inflation Calculator calculate?
Estimate how inflation reduces the future purchasing power of money over time. The result is based only on the inputs and assumptions shown on the page.
How should I interpret the future purchasing power from the Inflation Calculator?
Use it as an estimate for the scenario entered, not as a guarantee or personal recommendation. Test changes to starting amount, inflation rate (%), and number of years to see which assumptions have the greatest effect.