Value of 1991 Indonesian Ruphias today

Rp100 in 1991

Rp1,120.33 in 2018

The inflation rate in Indonesia between 1991 and today has been 1,020.33%, which translates into a total increase of Rp1,020.33. This means that 100 ruphias in 1991 are equivalent to 1,120.33 ruphias in 2018. In other words, the purchasing power of Rp100 in 1991 equals Rp1,120.33 today. The average annual inflation rate has been 9.01%.

Inflation timeline in Indonesia (1991-2018)

The following chart ilustrates the equivalence of Rp100 throughout the years due to inflation and CPI changes. All values are equivalent in terms of purchashing power, which means that for each year the same goods or services could be bought with the indicated amount of money.

All calculations are performed in the local currency (IDR) and using 6 decimal digits. Results show only up to 2 decimal digits to favour readability. Inflation data is provided by governments and international institutions on a monthly basis. Today's values were obtained by estimating figures from recent trends.

The following table contains relevant indicators:

Indicator Value
Total Inflation (1991-2018) 995.94%
Total Inflation* 1,020.33%
Annual inflation avg. (1991-2018) 9.27%
Annual inflation avg.* 9.01%
CPI 1991 9.95
CPI 2018 109.02
CPI today* 111.44
Rp1 in 1991 Rp10.96 in 2018

* Values extrapolated from the last official data to obtain today's values.

How to calculate today's value of money after inflation?

There are several ways to calculate the time value of money. Depending on the data available, results can be obtained by using the compound interest formula or the Consumer Price Index (CPI) formula.

Using the compound interest formula

Given that money changes in time as a result of an inflation rate that acts as a compound interest, the following formula can be used: FV = PV (1 + i)n, where:

  • FV: Future Value
  • PV: Present Value
  • i: Interest rate (inflation)
  • n: Number of times the interest is compounded (i.e. # of years)

In this case, the future value represents the final amount obtained after applying the inflation rate to our initial value. In other words, it indicates how much are Rp100 worth today. There are 27 years between 1991 and 2018 and the average inflation rate has been 9.0126%. Therefore, we can resolve the formula like this:

FV = PV (1 + i)n = Rp100 * (1 + 0.09)27 = Rp1,095.94

Using the CPI formula

When the CPI for both start and end years is known, the following formula can be used:

Final value = Initial value *
CPI final/CPI initial

In this case, the CPI in 1991 was 9.95 and the CPI today is 111.44. Therefore,

Final value = Initial value *
CPI final/CPI initial
= Rp100 *
109.02/9.95
= Rp1,095.94

Indonesia inflation - Conversion table

Initial Value Equivalent value
Rp1 ruphia in 1991 Rp11.2 ruphias today
Rp5 ruphias in 1991 Rp56.02 ruphias today
Rp10 ruphias in 1991 Rp112.03 ruphias today
Rp50 ruphias in 1991 Rp560.16 ruphias today
Rp100 ruphias in 1991 Rp1,120.33 ruphias today
Rp500 ruphias in 1991 Rp5,601.64 ruphias today
Rp1,000 ruphias in 1991 Rp11,203.28 ruphias today
Rp5,000 ruphias in 1991 Rp56,016.38 ruphias today
Rp10,000 ruphias in 1991 Rp112,032.77 ruphias today
Rp50,000 ruphias in 1991 Rp560,163.85 ruphias today
Rp100,000 ruphias in 1991 Rp1,120,327.7 ruphias today
Rp500,000 ruphias in 1991 Rp5,601,638.5 ruphias today
Rp1,000,000 ruphias in 1991 Rp11,203,276.99 ruphias today

Value of Ruphia in time (by year)

Period Value
1991 100
1992 109.99
1993 115.52
1994 127.26
1995 139.57
1996 152.07
1997 161.24
1998 177.89
1999 315.95
2000 322.05
2001 352.14
2002 396.29
2003 435.62
2004 458.1
2005 487.75
2006 571.04
2007 608.73
2008 648.81
2009 715.2
2010 735.11
2011 786.24
2012 816.02
2013 851.07
2014 916.79
2015 993.43
2016 1,026.74
2017 1,057.79
2018 1,095.94
Today 1,120.33