Value of 1970 Japanese Yen today

¥100 in 1970

¥336.49 in 2018

The inflation rate in Japan between 1970 and today has been 236.49%, which translates into a total increase of ¥236.49. This means that 100 yen in 1970 are equivalent to 336.49 yen in 2018. In other words, the purchasing power of ¥100 in 1970 equals ¥336.49 today. The average annual inflation rate has been 2.51%.

Inflation timeline in Japan (1970-2018)

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 (1970-2018) 233.85%
Total Inflation* 236.49%
Annual inflation avg. (1970-2018) 2.54%
Annual inflation avg.* 2.51%
CPI 1970 30.31
CPI 2018 101.2
CPI today* 102
¥1 in 1970 ¥3.34 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 48 years between 1970 and 2018 and the average inflation rate has been 2.5072%. Therefore, we can resolve the formula like this:

FV = PV (1 + i)n = ¥100 * (1 + 0.03)48 = ¥333.85

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 1970 was 30.31 and the CPI today is 102. Therefore,

Final value = Initial value *
CPI final/CPI initial
= ¥100 *
101.2/30.31
= ¥333.85

Japan inflation - Conversion table

Initial Value Equivalent value
¥1 yen in 1970 ¥3.36 yen today
¥5 yen in 1970 ¥16.82 yen today
¥10 yen in 1970 ¥33.65 yen today
¥50 yen in 1970 ¥168.24 yen today
¥100 yen in 1970 ¥336.49 yen today
¥500 yen in 1970 ¥1,682.45 yen today
¥1,000 yen in 1970 ¥3,364.9 yen today
¥5,000 yen in 1970 ¥16,824.49 yen today
¥10,000 yen in 1970 ¥33,648.98 yen today
¥50,000 yen in 1970 ¥168,244.9 yen today
¥100,000 yen in 1970 ¥336,489.79 yen today
¥500,000 yen in 1970 ¥1,682,448.96 yen today
¥1,000,000 yen in 1970 ¥3,364,897.93 yen today

Value of Yen in time (by year)

Period Value
1970 100
1971 107.21
1972 112.49
1973 118.76
1974 140.53
1975 170.22
1976 183.42
1977 202.88
1978 213.11
1979 221.36
1980 233.89
1981 250.72
1982 261.6
1983 266.88
1984 271.5
1985 278.76
1986 282.72
1987 281.73
1988 284.04
1989 287.01
1990 294.59
1991 305.48
1992 313.73
1993 317.36
1994 320.65
1995 322.63
1996 321.31
1997 323.29
1998 329.23
1999 331.21
2000 327.58
2001 326.26
2002 322.3
2003 321.31
2004 319.99
2005 320.65
2006 319.33
2007 320.32
2008 322.63
2009 323.95
2010 318.34
2011 317.36
2012 316.7
2013 316.04
2014 321.31
2015 328.9
2016 329.23
2017 330.22
2018 333.85
Today 336.49