Value of 1983 Japanese Yen today

¥100 in 1983

¥126.08 in 2018

The inflation rate in Japan between 1983 and today has been 26.08%, which translates into a total increase of ¥26.08. This means that 100 yen in 1983 are equivalent to 126.08 yen in 2018. In other words, the purchasing power of ¥100 in 1983 equals ¥126.08 today. The average annual inflation rate has been 0.65%.

Inflation timeline in Japan (1983-2018)

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 (1983-2018) 25.09%
Total Inflation* 26.08%
Annual inflation avg. (1983-2018) 0.64%
Annual inflation avg.* 0.65%
CPI 1983 80.9
CPI 2018 101.2
CPI today* 102
¥1 in 1983 ¥1.25 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 35 years between 1983 and 2018 and the average inflation rate has been 0.6459%. Therefore, we can resolve the formula like this:

FV = PV (1 + i)n = ¥100 * (1 + 0.01)35 = ¥125.09

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 1983 was 80.9 and the CPI today is 102. Therefore,

Final value = Initial value *
CPI final/CPI initial
= ¥100 *
101.2/80.9
= ¥125.09

Japan inflation - Conversion table

Initial Value Equivalent value
¥1 yen in 1983 ¥1.26 yen today
¥5 yen in 1983 ¥6.3 yen today
¥10 yen in 1983 ¥12.61 yen today
¥50 yen in 1983 ¥63.04 yen today
¥100 yen in 1983 ¥126.08 yen today
¥500 yen in 1983 ¥630.41 yen today
¥1,000 yen in 1983 ¥1,260.82 yen today
¥5,000 yen in 1983 ¥6,304.1 yen today
¥10,000 yen in 1983 ¥12,608.19 yen today
¥50,000 yen in 1983 ¥63,040.97 yen today
¥100,000 yen in 1983 ¥126,081.94 yen today
¥500,000 yen in 1983 ¥630,409.68 yen today
¥1,000,000 yen in 1983 ¥1,260,819.35 yen today

Value of Yen in time (by year)

Period Value
1983 100
1984 101.73
1985 104.45
1986 105.93
1987 105.56
1988 106.43
1989 107.54
1990 110.38
1991 114.46
1992 117.55
1993 118.91
1994 120.15
1995 120.89
1996 120.4
1997 121.14
1998 123.36
1999 124.1
2000 122.74
2001 122.25
2002 120.77
2003 120.4
2004 119.9
2005 120.15
2006 119.65
2007 120.02
2008 120.89
2009 121.38
2010 119.28
2011 118.91
2012 118.67
2013 118.42
2014 120.4
2015 123.24
2016 123.36
2017 123.73
2018 125.09
Today 126.08