Republic of Korea Inflation Calculator
Compare purchasing power across time using Republic of Korea CPI data from the OECD.
Inflation adjustment
Convert an amount from one date to another (monthly CPI or yearly average).
Inflation trends
Explore CPI level and inflation rate over time.
Republic of Korea Inflation Calculator
This tool helps you see how the value of the Korean Won (KRW) has changed over time. By comparing purchasing power across different years, you can better understand how everyday costs in the Republic of Korea have shifted.
Understanding CPI and Inflation
A simple everyday example
Think of a regular shopping trip in the Republic of Korea: groceries, transportation, utility bills, and daily services. Even if you buy the same set of items, the total cost can change over time.
The Consumer Price Index (CPI) measures this at a national level. It tracks the total cost of a fixed “basket” of goods and services. The CPI is the index number representing that basket’s cost over time.
What is inflation?
Inflation means that overall prices rise over time. When inflation is positive, your money buys less than before, so purchasing power falls.
Inflation rate (YoY)
The Year-over-Year (YoY) inflation rate compares a month’s CPI with the same month one year earlier.
Key concepts
- Purchasing Power: How much goods and services your money can buy.
- Disinflation: Prices are still rising, but at a slower pace.
- Deflation: The opposite of inflation, where average prices decline.
Historical Inflation Trends in the Republic of Korea
The Republic of Korea has gone through several inflation phases as its economy rapidly industrialized and modernized. Inflation tended to be higher in earlier high-growth decades, while later periods generally showed more moderate and better-anchored inflation.
Like many economies, the Republic of Korea also experienced a noticeable inflation increase in the post-pandemic period, followed by easing in subsequent years. Looking at CPI data over different date ranges gives a clearer picture of how long-term purchasing power has changed.
Original CPI Data Table
Browse the original monthly CPI values used for our calculations below.
| 2025-12 | 123.9 | +0.32% | +2.31% |
| 2025-11 | 123.5 | -0.19% | +2.45% |
| 2025-10 | 123.8 | +0.31% | +2.38% |
| 2025-09 | 123.4 | +0.52% | +2.10% |
| 2025-08 | 122.8 | -0.06% | +1.67% |
| 2025-07 | 122.8 | +0.18% | +2.09% |
| 2025-06 | 122.6 | +0.03% | +2.17% |
| 2025-05 | 122.6 | -0.09% | +1.90% |
| 2025-04 | 122.7 | +0.08% | +2.08% |
| 2025-03 | 122.6 | +0.18% | +2.05% |
| 2025-02 | 122.4 | +0.32% | +2.02% |
| 2025-01 | 122.0 | +0.70% | +2.24% |
FAQ
How do you calculate the adjusted value?
We use the CPI ratio between your base date and target date.
- : Your original amount in KRW.
- : CPI index at the starting date.
- : CPI index at the ending date.
Why can annual values differ from some official summaries?
Official annual summaries may apply specific weighting methods, seasonal adjustments, or data handling rules. For clarity and consistency, this calculator uses a straightforward average of available monthly data.
Quick Tips for Reading Results
- If the adjusted amount is higher: Purchasing power has fallen (inflation).
- If the adjusted amount is lower: Purchasing power has improved (deflation).
- Check the date range: Short periods can be noisy, while longer periods show broader trends.
Data Source
The data powering this calculator comes from the Organisation for Economic Co-operation and Development (OECD).
- Provider: OECD
- Dataset: Consumer price indices (CPIs, HICPs), COICOP 2018