Inflation Calculator
Utilities
Inflation calculator
Adjust a past amount to present value with a simple annual inflation rate. No external data or APIs.
Adjust for inflation
Present value
$63,814
Adjusted for inflation
Change from past value
$13,814
Positive = gain from inflation
What this calculator does
This Inflation Calculator projects how the purchasing power of money changes over time by applying an annual inflation (or deflation) rate. It can convert past amounts into present equivalents or estimate future values given a constant annual rate, helping you plan budgets and savings targets.
Who should use this calculator
Use this tool if you are planning long-term savings, analysing historical costs, or preparing budgets that should account for inflation. Individuals, small businesses, and students of economics can use it to quickly rebase amounts across time horizons.
How this calculator works
The calculator applies the compound growth formula: present value = past value × (1 + r)^t, where r is the annual inflation rate (decimal) and t is years. For future value projections the same formula applies. Partial years are supported by using decimals for t. All math runs client-side without external data sources.
How to interpret your result
The output is a straightforward compound-adjusted value. Positive inflation rates increase historical amounts to present equivalents; negative rates model deflation. Use results to compare purchasing power but remember real-world CPI series vary year-to-year and this tool uses a constant rate for simplicity.
Example
If you had ₹50,000 five years ago and apply a constant 5% annual inflation, the present equivalent is about ₹63,814. Enter different rates to model alternative CPI paths or use decimals for partial-year adjustments.
Limitations & disclaimer
This calculator uses a fixed annual rate for simplicity and does not consume historical CPI series or forecast models. For rigorous inflation analysis use official CPI data or a professional econometric model. Results here are indicative and for planning only.
FAQs
Is this tied to any CPI feed?
No. You supply the annual inflation rate. There are no live API calls or feeds.
Can I run deflation scenarios?
Yes. Enter a negative rate to see how values shrink over time.
Does it support partial years?
Enter decimals for years (e.g., 2.5) and the calculation will apply for that duration.
Is tax considered?
No. This is purely an inflation adjustment, not a tax calculator.