Value of 1977 Japanese Yen today

¥100 in 1977

¥165.37 in 2018

The inflation rate in Japan between 1977 and today has been 65.37%, which translates into a total increase of ¥65.37. This means that 100 yen in 1977 are equivalent to 165.37 yen in 2018. In other words, the purchasing power of ¥100 in 1977 equals ¥165.37 today. The average annual inflation rate has been 1.2%.

Inflation timeline in Japan (1977-2018)

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 (1977-2018) 64.55%
Total Inflation* 65.37%
Annual inflation avg. (1977-2018) 1.22%
Annual inflation avg.* 1.2%
CPI 1977 61.5
CPI 2018 101.2
CPI today* 101.7
¥1 in 1977 ¥1.65 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 41 years between 1977 and 2018 and the average inflation rate has been 1.2048%. Therefore, we can resolve the formula like this:

FV = PV (1 + i)n = ¥100 * (1 + 0.01)41 = ¥164.55

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 1977 was 61.5 and the CPI today is 101.7. Therefore,

Final value = Initial value *
CPI final/CPI initial
= ¥100 *
101.2/61.5
= ¥164.55

Japan inflation - Conversion table

Initial Value Equivalent value
¥1 yen in 1977 ¥1.65 yen today
¥5 yen in 1977 ¥8.27 yen today
¥10 yen in 1977 ¥16.54 yen today
¥50 yen in 1977 ¥82.68 yen today
¥100 yen in 1977 ¥165.37 yen today
¥500 yen in 1977 ¥826.83 yen today
¥1,000 yen in 1977 ¥1,653.66 yen today
¥5,000 yen in 1977 ¥8,268.3 yen today
¥10,000 yen in 1977 ¥16,536.61 yen today
¥50,000 yen in 1977 ¥82,683.05 yen today
¥100,000 yen in 1977 ¥165,366.1 yen today
¥500,000 yen in 1977 ¥826,830.5 yen today
¥1,000,000 yen in 1977 ¥1,653,660.99 yen today

Value of Yen in time (by year)

Period Value
1977 100
1978 105.04
1979 109.11
1980 115.28
1981 123.58
1982 128.94
1983 131.54
1984 133.82
1985 137.4
1986 139.35
1987 138.86
1988 140
1989 141.46
1990 145.2
1991 150.57
1992 154.63
1993 156.42
1994 158.05
1995 159.02
1996 158.37
1997 159.35
1998 162.28
1999 163.25
2000 161.46
2001 160.81
2002 158.86
2003 158.37
2004 157.72
2005 158.05
2006 157.4
2007 157.89
2008 159.02
2009 159.67
2010 156.91
2011 156.42
2012 156.1
2013 155.77
2014 158.37
2015 162.11
2016 162.28
2017 162.76
2018 164.55
Today 165.37