Value of 1991 Japanese Yen today

¥100 in 1991

¥109.83 in 2018

The inflation rate in Japan between 1991 and today has been 9.83%, which translates into a total increase of ¥9.83. This means that 100 yen in 1991 are equivalent to 109.83 yen in 2018. In other words, the purchasing power of ¥100 in 1991 equals ¥109.83 today. The average annual inflation rate has been 0.34%.

Inflation timeline in Japan (1991-2018)

The following chart ilustrates the equivalence of ¥100 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 (JPY) 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) 9.29%
Total Inflation* 9.83%
Annual inflation avg. (1991-2018) 0.33%
Annual inflation avg.* 0.34%
CPI 1991 92.6
CPI 2018 101.2
CPI today* 101.7
¥1 in 1991 ¥1.09 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 ¥100 worth today. There are 27 years between 1991 and 2018 and the average inflation rate has been 0.3353%. Therefore, we can resolve the formula like this:

FV = PV (1 + i)n = ¥100 * (1 + 0)27 = ¥109.29

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 92.6 and the CPI today is 101.7. Therefore,

Final value = Initial value *
CPI final/CPI initial
= ¥100 *
101.2/92.6
= ¥109.29

Japan inflation - Conversion table

Initial Value Equivalent value
¥1 yen in 1991 ¥1.1 yen today
¥5 yen in 1991 ¥5.49 yen today
¥10 yen in 1991 ¥10.98 yen today
¥50 yen in 1991 ¥54.91 yen today
¥100 yen in 1991 ¥109.83 yen today
¥500 yen in 1991 ¥549.14 yen today
¥1,000 yen in 1991 ¥1,098.27 yen today
¥5,000 yen in 1991 ¥5,491.37 yen today
¥10,000 yen in 1991 ¥10,982.74 yen today
¥50,000 yen in 1991 ¥54,913.69 yen today
¥100,000 yen in 1991 ¥109,827.38 yen today
¥500,000 yen in 1991 ¥549,136.88 yen today
¥1,000,000 yen in 1991 ¥1,098,273.77 yen today

Value of Yen in time (by year)

Period Value
1991 100
1992 102.7
1993 103.89
1994 104.97
1995 105.62
1996 105.18
1997 105.83
1998 107.78
1999 108.42
2000 107.24
2001 106.8
2002 105.51
2003 105.18
2004 104.75
2005 104.97
2006 104.54
2007 104.86
2008 105.62
2009 106.05
2010 104.21
2011 103.89
2012 103.67
2013 103.46
2014 105.18
2015 107.67
2016 107.78
2017 108.1
2018 109.29
Today 109.83