Inflation Calculator: See What Money Is Really Worth
The inflation calculator shows how the purchasing power of money changes over time, using real Consumer Price Index (CPI) data from the World Bank. Enter an amount, pick a country and two years, and you instantly see the equivalent value, the total inflation, and how much buying power has been gained or lost.
It is built for anyone trying to make sense of rising prices: budgeting for the future, comparing a historical salary to today, planning for retirement, or simply answering "what is my money worth?". A Historical mode reads actual CPI records, while a Future Projection mode estimates value changes from an expected annual rate.
How to Use the Inflation Calculator
Enter an amount
Type a value in the Amount field or drag the slider to set the sum of money you want to adjust for inflation.
Choose a country
Your country is auto-detected, or open the Country dropdown and search by name, currency code, or country code. Each pick updates the currency symbol and formatting.
Set start and end years
Select a Start Year and End Year, or tap a quick preset — Last 5, 10, 20, or 50 years — to compare common periods.
Read the results
See the equivalent value, Total Inflation, Avg. Annual Rate, and Purchasing Power update instantly, then expand the Year-by-Year Breakdown for the full detail.
To look ahead instead of back, switch to Future Projection mode, set the Expected Annual Rate (the slider runs from 0.1% to 20%, default 2.5%), and choose your forecast years.
Features
Real World Bank CPI Data
Historical results use official Consumer Price Index data (FP.CPI.TOTL, base year 2010 = 100) for accurate inflation comparisons.
49 Countries, Auto-Detected
Covers 49 countries across the Americas, Europe, Asia, Oceania, and Africa, with your location detected automatically.
Searchable Country Dropdown
Countries are grouped by region, and you can filter the list by country name, currency code, or country code.
Historical & Future Modes
Measure real past inflation between any two years, or project future value changes from a custom expected rate.
Slider or Direct Input
Set the amount and the expected rate with a slider or by typing exact values, whichever is faster for you.
Quick Year Presets
One-tap presets for the last 5, 10, 20, or 50 years jump straight to the most common comparison ranges.
Summary Cards & Gauge
Total Inflation, Avg. Annual Rate, and Purchasing Power cards sit beside a buying-power gauge that visualizes the change.
Adaptive Trend Chart
Annual rates show as a bar chart for 30 years or fewer and a line chart beyond that — red for inflation, green for deflation.
Year-by-Year Breakdown
Expand a full table of annual rate, cumulative inflation, and the adjusted value of your amount for every year in range.
Smart Currency Handling
Switching countries updates the symbol, default amount, slider range, and number formatting — even for high-denomination currencies.
Frequently Asked Questions
How do I calculate inflation between two years?
Enter an amount, pick your country, then set a Start Year and End Year. In Historical mode the calculator compares the CPI of both years and shows the equivalent value, the total inflation between them, and the change in purchasing power.
What is CPI and how does it measure inflation?
The Consumer Price Index (CPI) tracks the average change in prices consumers pay for a basket of goods and services over time. When CPI rises, the same money buys less — that is inflation. This tool uses World Bank CPI data with a base year of 2010 = 100.
What is purchasing power?
Purchasing power is the real value of money after adjusting for inflation. If $1.00 from an earlier year has a purchasing power of $0.75 today, that dollar now buys only what 75 cents would have bought then. The lower the figure, the more inflation has eroded the money's value.
How is the average annual rate calculated?
It uses the compound annual growth rate (CAGR): the calculator takes the ratio of the end-year CPI to the start-year CPI, raises it to the power of one divided by the number of years, and subtracts one. This gives a single smoothed yearly rate that accounts for compounding.
How much will money be worth in the future?
Switch to Future Projection mode, set an Expected Annual Rate, and choose your forecast period. The calculator applies compound math to project the adjusted value, total inflation, and purchasing power change. It is a useful planning estimate, but actual future inflation can differ.
Why doesn't the data include the current year?
The World Bank publishes CPI data annually, usually with a 1–2 year delay, so complete figures for a year tend to arrive in the following year. The calculator automatically uses the most recent year available for each country.
Why do some countries have less data than others?
Data availability depends on each country's reporting to the World Bank. Some have CPI records reaching back decades, while others start later. The year dropdowns adjust automatically to show only the years with data for the country you selected.
Is my data private?
Yes. All calculations happen locally in your browser. The amounts, country, and years you enter are never sent anywhere — the page only fetches the public CPI data files needed to compute the result.
No comments yet. Be the first to comment!