Japan Inflation Calculator

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Result: ¥100 in 1980 → ¥148.66 in 2024


Value of ¥100 from 1980 to 2024

Updated: April 10, 2025

¥100 in 1980 is equivalent in purchasing power to about ¥148.66 today, an increase of ¥48.66 over 44 years. The yen had an average inflation rate of 0.91% per year between 1980 and today, producing a cumulative price increase of 48.66%.

This means that today's prices are 1.49 times as high as average prices since 1980, according to the OECD and the World Bank consumer price index for Japan. A yen today only buys 67.268% of what it could buy back then.

The inflation rate in 1980 was 7.77%. The current inflation rate compared to the end of last year is now 2.88%. If this number holds, ¥100 today will be equivalent in buying power to ¥102.88 next year.


Inflation from 1980 to 2024
Cumulative price change48.66%
Average inflation rate0.91%
Converted amount
¥100 base
¥148.66
Price difference
¥100 base
¥48.66
CPI in 198074.472
CPI in 2024110.714
Inflation in 19807.77%
Inflation in 20242.88%
¥100 in 1980¥148.66 in 2024

JPY inflation since 1980
Annual Rate, the OECD and the World Bank CPI
Download

Buying power of ¥100 in 1980

This chart shows a calculation of buying power equivalence for ¥100 in 1980 (price index tracking began in 1955).

For example, if you started with ¥100, you would need to end with ¥148.66 in order to "adjust" for inflation (sometimes refered to as "beating inflation").

When ¥100 is equivalent to ¥148.66 over time, that means that the "real value" of a single Japanese yen decreases over time. In other words, a yen will pay for fewer items at the store.

This effect explains how inflation erodes the value of a yen over time. By calculating the value in 1980 dollars, the chart below shows how ¥100 is worth less over 44 years.

According to the OECD and the World Bank, each of these JPY amounts below is equal in terms of what it could buy at the time:

Yen inflation: 1980-2024
YearYen ValueInflation Rate
1980¥100.007.77%
1981¥104.934.93%
1982¥107.812.75%
1983¥109.841.88%
1984¥112.312.25%
1985¥114.602.04%
1986¥115.300.61%
1987¥115.450.13%
1988¥116.200.65%
1989¥118.872.29%
1990¥122.513.07%
1991¥126.523.27%
1992¥128.711.73%
1993¥130.331.26%
1994¥131.230.69%
1995¥131.11-0.09%
1996¥131.290.14%
1997¥133.531.70%
1998¥134.390.65%
1999¥133.93-0.35%
2000¥133.00-0.69%
2001¥132.08-0.69%
2002¥130.90-0.90%
2003¥130.55-0.26%
2004¥130.54-0.01%
2005¥130.17-0.29%
2006¥130.500.25%
2007¥130.550.04%
2008¥132.351.38%
2009¥130.59-1.33%
2010¥129.62-0.74%
2011¥129.27-0.27%
2012¥129.21-0.04%
2013¥129.640.34%
2014¥133.222.76%
2015¥134.280.80%
2016¥134.11-0.13%
2017¥134.760.48%
2018¥136.090.99%
2019¥136.730.47%
2020¥136.69-0.02%
2021¥136.37-0.23%
2022¥139.782.50%
2023¥144.823.60%
2024¥148.662.66%*
* Compared to previous annual rate. Not final. See inflation summary for latest 12-month trailing value.
Click to show 38 more rows

This conversion table shows various other 1980 amounts in today's yen, based on the 48.66% change in prices:

Conversion: 1980 yen today
Initial valueEquivalent value
¥1 yen in 1980¥1.49 yen today
¥5 yen in 1980¥7.43 yen today
¥10 yen in 1980¥14.87 yen today
¥50 yen in 1980¥74.33 yen today
¥100 yen in 1980¥148.66 yen today
¥500 yen in 1980¥743.32 yen today
¥1,000 yen in 1980¥1,486.65 yen today
¥5,000 yen in 1980¥7,433.25 yen today
¥10,000 yen in 1980¥14,866.50 yen today
¥50,000 yen in 1980¥74,332.48 yen today
¥100,000 yen in 1980¥148,664.96 yen today
¥500,000 yen in 1980¥743,324.79 yen today
¥1,000,000 yen in 1980¥1,486,649.58 yen today

How to calculate inflation rate for ¥100 since 1980

Our calculations use the following inflation rate formula to calculate the change in value between 1980 and today:

CPI today CPI in 1980
×
1980 JPY value
=
Today's value

Then plug in historical CPI values. The Japanese CPI was 74.47188 in the year 1980 and 110.71358916166263 in 2024:

110.7135891616626374.47188
×
¥100
=
¥148.66

¥100 in 1980 has the same "purchasing power" or "buying power" as ¥148.66 in 2024.

To get the total inflation rate for the 44 years between 1980 and 2024, we use the following formula:

CPI in 2024 - CPI in 1980CPI in 1980
×
100
=
Cumulative inflation rate (44 years)

Plugging in the values to this equation, we get:

110.71358916166263 - 74.4718874.47188
×
100
=
49%

Data source & citation

You may use the following MLA citation for this page: “¥100 in 1980 → 2024 | Japan Inflation Calculator.” Official Inflation Data, Alioth Finance, 11 Apr. 2025, https://www.officialdata.org/japan/inflation/1980?amount=100.

Special thanks to QuickChart for their chart image API, which is used for chart downloads.

in2013dollars.com is a reference website maintained by the Official Data Foundation.


Ian Webster

About the author

Ian Webster is an engineer and data expert based in San Mateo, California. He has worked for Google, NASA, and consulted for governments around the world on data pipelines and data analysis. Disappointed by the lack of clear resources on the impacts of inflation on economic indicators, Ian believes this website serves as a valuable public tool. Ian earned his degree in Computer Science from Dartmouth College.

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Inflation from 1980 to 2024
Cumulative price change48.66%
Average inflation rate0.91%
Converted amount
¥100 base
¥148.66
Price difference
¥100 base
¥48.66
CPI in 198074.472
CPI in 2024110.714
Inflation in 19807.77%
Inflation in 20242.88%
¥100 in 1980¥148.66 in 2024