Value of 1982 Japanese Yen today

¥100 in 1982

¥128.25 in 2018

The inflation rate in Japan between 1982 and today has been 28.25%, which translates into a total increase of ¥28.25. This means that 100 yen in 1982 are equivalent to 128.25 yen in 2018. In other words, the purchasing power of ¥100 in 1982 equals ¥128.25 today. The average annual inflation rate has been 0.67%.

Inflation timeline in Japan (1982-2018)

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 (1982-2018) 27.62%
Total Inflation* 28.25%
Annual inflation avg. (1982-2018) 0.68%
Annual inflation avg.* 0.67%
CPI 1982 79.3
CPI 2018 101.2
CPI today* 101.7
¥1 in 1982 ¥1.28 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 36 years between 1982 and 2018 and the average inflation rate has been 0.6747%. Therefore, we can resolve the formula like this:

FV = PV (1 + i)n = ¥100 * (1 + 0.01)36 = ¥127.62

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 1982 was 79.3 and the CPI today is 101.7. Therefore,

Final value = Initial value *
CPI final/CPI initial
= ¥100 *
101.2/79.3
= ¥127.62

Japan inflation - Conversion table

Initial Value Equivalent value
¥1 yen in 1982 ¥1.28 yen today
¥5 yen in 1982 ¥6.41 yen today
¥10 yen in 1982 ¥12.82 yen today
¥50 yen in 1982 ¥64.12 yen today
¥100 yen in 1982 ¥128.25 yen today
¥500 yen in 1982 ¥641.24 yen today
¥1,000 yen in 1982 ¥1,282.47 yen today
¥5,000 yen in 1982 ¥6,412.37 yen today
¥10,000 yen in 1982 ¥12,824.74 yen today
¥50,000 yen in 1982 ¥64,123.68 yen today
¥100,000 yen in 1982 ¥128,247.35 yen today
¥500,000 yen in 1982 ¥641,236.77 yen today
¥1,000,000 yen in 1982 ¥1,282,473.53 yen today

Value of Yen in time (by year)

Period Value
1982 100
1983 102.02
1984 103.78
1985 106.56
1986 108.07
1987 107.69
1988 108.58
1989 109.71
1990 112.61
1991 116.77
1992 119.92
1993 121.31
1994 122.57
1995 123.33
1996 122.82
1997 123.58
1998 125.85
1999 126.61
2000 125.22
2001 124.72
2002 123.2
2003 122.82
2004 122.32
2005 122.57
2006 122.07
2007 122.45
2008 123.33
2009 123.83
2010 121.69
2011 121.31
2012 121.06
2013 120.81
2014 122.82
2015 125.73
2016 125.85
2017 126.23
2018 127.62
Today 128.25