Indonesia Inflation Calculator

Buying power of Rp1,000,000 in 1998

This chart shows a calculation of buying power equivalence for Rp1,000,000 in 1998 (price index tracking began in 1959).

For example, if you started with Rp1,000,000, you would need to end with Rp5,066,705.05 in order to "adjust" for inflation (sometimes refered to as "beating inflation").

When Rp1,000,000 is equivalent to Rp5,066,705.05 over time, that means that the "real value" of a single Indonesian ruphia decreases over time. In other words, a ruphia will pay for fewer items at the store.

This effect explains how inflation erodes the value of a ruphia over time. By calculating the value in 1998 dollars, the chart below shows how Rp1,000,000 is worth less over 28 years.

According to the OECD and the World Bank, each of these IDR amounts below is equal in terms of what it could buy at the time:

This conversion table shows various other 1998 amounts in today's ruphias, based on the 406.67% change in prices:

How to calculate inflation rate for Rp1,000,000 since 1998

Our calculations use the following inflation rate formula to calculate the change in value between 1998 and today:

Then plug in historical CPI values. The Indonesian CPI was 26.63236 in the year 1998 and 134.93831280537768 in 2026:

Rp1,000,000 in 1998 has the same "purchasing power" or "buying power" as Rp5,066,705.05 in 2026.

To get the total inflation rate for the 28 years between 1998 and 2026, we use the following formula:

Plugging in the values to this equation, we get:

Data source & citation

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