Value of 2004 Japanese Yen today

¥100 in 2004

¥104.85 in 2018

The inflation rate in Japan between 2004 and today has been 4.85%, which translates into a total increase of ¥4.85. This means that 100 yen in 2004 are equivalent to 104.85 yen in 2018. In other words, the purchasing power of ¥100 in 2004 equals ¥104.85 today. The average annual inflation rate has been 0.32%.

Inflation timeline in Japan (2004-2018)

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 (2004-2018) 4.33%
Total Inflation* 4.85%
Annual inflation avg. (2004-2018) 0.3%
Annual inflation avg.* 0.32%
CPI 2004 97
CPI 2018 101.2
CPI today* 101.7
¥1 in 2004 ¥1.04 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 14 years between 2004 and 2018 and the average inflation rate has been 0.316%. Therefore, we can resolve the formula like this:

FV = PV (1 + i)n = ¥100 * (1 + 0)14 = ¥104.33

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 2004 was 97 and the CPI today is 101.7. Therefore,

Final value = Initial value *
CPI final/CPI initial
= ¥100 *
101.2/97
= ¥104.33

Japan inflation - Conversion table

Initial Value Equivalent value
¥1 yen in 2004 ¥1.05 yen today
¥5 yen in 2004 ¥5.24 yen today
¥10 yen in 2004 ¥10.48 yen today
¥50 yen in 2004 ¥52.42 yen today
¥100 yen in 2004 ¥104.85 yen today
¥500 yen in 2004 ¥524.23 yen today
¥1,000 yen in 2004 ¥1,048.46 yen today
¥5,000 yen in 2004 ¥5,242.28 yen today
¥10,000 yen in 2004 ¥10,484.55 yen today
¥50,000 yen in 2004 ¥52,422.76 yen today
¥100,000 yen in 2004 ¥104,845.52 yen today
¥500,000 yen in 2004 ¥524,227.58 yen today
¥1,000,000 yen in 2004 ¥1,048,455.16 yen today

Value of Yen in time (by year)

Period Value
2004 100
2005 100.21
2006 99.79
2007 100.1
2008 100.82
2009 101.24
2010 99.48
2011 99.18
2012 98.97
2013 98.76
2014 100.41
2015 102.78
2016 102.89
2017 103.2
2018 104.33
Today 104.85