¥

Inflation calculator - Japanese Yen

This tool is useful to calculate the time value of money based on historical inflation and CPI values. To start, select an amount and two years, or browse the default calculation results.

¥100 in January 1955
¥672.82 in December 2025

The cumulative inflation rate in Japan between January 1955 and December 2025 was 572.82%, meaning that overall prices were 6.73 times higher than they were in January 1955. In other words, the purchasing power of ¥100 in Jan 1955 was equivalent to ¥672.82 in Dec 2025. The average annual inflation rate over this period was 0.22%.

Inflation timeline in Japan (Jan 1955 - Dec 2025)

The chart below shows how the value of ¥100 changes over time when adjusted for inflation, based on Consumer Price Index (CPI) data. All values are equivalent in terms of purchasing power, indicating how much money would be needed each year to buy the same goods or services.

All calculations are performed in Japanese yen with six-decimal precision, though displayed values are rounded to two decimals for readability. Inflation figures are sourced from official government and international reports released monthly.

The following table contains relevant indicators:

Indicator Value
Cumulative inflation from 1955-01 to 2025-12 572.82%
Avg. Monthly inflation from 1955-01 to 2025-12 0.22%
CPI 1955-01 16.79
CPI 2025-12 112.96

How to calculate the time value of money with inflation data?

There are several ways to calculate the time value of money. Depending on the data available, results can be obtained by using the Consumer Price Index (CPI) formula or the compound interest formula.

Using the CPI formula

When we have both the start and end months, we can use the following formula:

Valuet =Value0 ×
CPIt/CPI0

To obtain the values equivalent in buying power between January 1955 and December 2025, use the corresponding CPI values:

ValueDec 2025
=ValueJan 1955 ×
CPIDec 2025/CPIJan 1955
=¥ 100 ×
112.96/16.79
¥672.82

Alternative: Using the compound interest formula

Given that money changes with time as a result of an inflation rate that acts as compound interest, we can use the following formula: 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 months)

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 851 months between January 1955 and December 2025 and the average inflation rate was 0.2243%. Therefore, we can resolve the formula like this:

ValueDec 2025
=PV × (1 + i)n
=¥100 × (1 + 0.002243)851
¥672.82

Japan inflation - Conversion table

Initial Value Equivalent value
¥1 yen in 1955-01 ¥6.73 yen in 2025-12
¥5 yen in 1955-01 ¥33.64 yen in 2025-12
¥10 yen in 1955-01 ¥67.28 yen in 2025-12
¥50 yen in 1955-01 ¥336.41 yen in 2025-12
¥100 yen in 1955-01 ¥672.82 yen in 2025-12
¥500 yen in 1955-01 ¥3,364.08 yen in 2025-12
¥1,000 yen in 1955-01 ¥6,728.16 yen in 2025-12
¥5,000 yen in 1955-01 ¥33,640.79 yen in 2025-12
¥10,000 yen in 1955-01 ¥67,281.57 yen in 2025-12
¥50,000 yen in 1955-01 ¥336,407.86 yen in 2025-12
¥100,000 yen in 1955-01 ¥672,815.71 yen in 2025-12
¥500,000 yen in 1955-01 ¥3,364,078.56 yen in 2025-12
¥1,000,000 yen in 1955-01 ¥6,728,157.12 yen in 2025-12
Cumulative inflation Jan 1955-Dec 2025 572.82%
Avg. monthly inflation Jan 1955-Dec 2025 0.22%
Avg. annual inflation 1955-2025 2.75%
CPI 1955-01 16.79
CPI 2025-12 112.96

Value of Yen over time (by month)

Period Value
1955-01 100
1955-02 100
1955-03 99.36
1955-04 100.21
1955-05 99.25
1955-06 99.36
1955-07 98.93
1955-08 99.57
1955-09 100
1955-10 100.64
1955-11 98.28
1955-12 97.85
1956-01 98.39
1956-02 99.25
1956-03 99.46
1956-04 99.68
1956-05 99.25
1956-06 101.29
1956-07 99.25
1956-08 99.79
1956-09 100.64
1956-10 101.18
1956-11 99.46
1956-12 100.54
1957-01 101.61
1957-02 101.39
1957-03 101.72
1957-04 102.36
1957-05 103.22
1957-06 102.9
1957-07 104.08
1957-08 104.83
1957-09 104.29
1957-10 103.97
1957-11 102.58
1957-12 102.36
1958-01 102.58
1958-02 101.72
1958-03 101.29
1958-04 101.72
1958-05 101.61
1958-06 102.79
1958-07 102.36
1958-08 103.43
1958-09 102.9
1958-10 103.76
1958-11 102.68
1958-12 102.58
1959-01 102.68
1959-02 102.25
1959-03 102.58
1959-04 103.11
1959-05 102.36
1959-06 103.11
1959-07 103.22
1959-08 104.83
1959-09 103.86
1959-10 105.26
1959-11 104.72
1959-12 104.72
1960-01 106.01
1960-02 106.12
1960-03 105.79
1960-04 106.44
1960-05 107.4
1960-06 106.97
1960-07 106.87
1960-08 107.73
1960-09 108.58
1960-10 109.12
1960-11 107.62
1960-12 108.48
1961-01 109.98
1961-02 110.52
1961-03 110.3
1961-04 111.37
1961-05 110.84
1961-06 110.84
1961-07 112.66
1961-08 113.52
1961-09 114.16
1961-10 116.63
1961-11 117.17
1961-12 118.24
1962-01 118.99
1962-02 118.56
1962-03 118.78
1962-04 120.06
1962-05 120.71
1962-06 120.28
1962-07 121.46
1962-08 121.46
1962-09 121.03
1962-10 122
1962-11 121.57
1962-12 124.03
1963-01 126.07
1963-02 126.64
1963-03 127.21
1963-04 127.78
1963-05 128.78
1963-06 129.78
1963-07 128.93
1963-08 128.5
1963-09 131.06
1963-10 130.64
1963-11 130.07
1963-12 130.64
1964-01 130.78
1964-02 130.64
1964-03 131.21
1964-04 132.78
1964-05 133.35
1964-06 133.06
1964-07 132.35
1964-08 133.77
1964-09 135.49
1964-10 137.91
1964-11 136.77
1964-12 136.77
1965-01 139.76
1965-02 139.48
1965-03 140.33
1965-04 143.33
1965-05 142.47
1965-06 142.19
1965-07 141.48
1965-08 142.19
1965-09 144.19
1965-10 146.04
1965-11 144.61
1965-12 145.61
1966-01 147.04
1966-02 148.18
1966-03 148.75
1966-04 150.46
1966-05 149.46
1966-06 149.75
1966-07 150.18
1966-08 149.03
1966-09 150.75
1966-10 151.74
1966-11 150.6
1966-12 152.03
1967-01 153.74
1967-02 154.45
1967-03 154.74
1967-04 155.17
1967-05 154.17
1967-06 153.31
1967-07 153.17
1967-08 154.45
1967-09 156.88
1967-10 159.59
1967-11 159.45
1967-12 160.59
1968-01 161.87
1968-02 162.58
1968-03 162.87
1968-04 163.3
1968-05 163.3
1968-06 161.87
1968-07 161.87
1968-08 163.3
1968-09 167
1968-10 167.15
1968-11 167.57
1968-12 166.86
1969-01 167.43
1969-02 167.43
1969-03 169.14
1969-04 170.85
1969-05 171
1969-06 171.28
1969-07 173.42
1969-08 174.99
1969-09 176.27
1969-10 177.13
1969-11 176.42
1969-12 177.56
1970-01 180.41
1970-02 180.41
1970-03 182.2
1970-04 183.98
1970-05 183.39
1970-06 183.39
1970-07 183.39
1970-08 182.79
1970-09 185.77
1970-10 188.75
1970-11 188.75
1970-12 189.94
1971-01 191.72
1971-02 191.72
1971-03 192.32
1971-04 194.7
1971-05 195.3
1971-06 195.89
1971-07 195.89
1971-08 195.89
1971-09 200.65
1971-10 201.25
1971-11 199.46
1971-12 199.46
1972-01 199.46
1972-02 200.65
1972-03 202.44
1972-04 204.82
1972-05 205.42
1972-06 205.42
1972-07 205.42
1972-08 207.2
1972-09 208.39
1972-10 209.59
1972-11 208.99
1972-12 210.78
1973-01 212.56
1973-02 214.35
1973-03 219.71
1973-04 223.87
1973-05 227.45
1973-06 228.04
1973-07 229.83
1973-08 231.62
1973-09 238.16
1973-10 239.36
1973-11 241.14
1973-12 248.88
1974-01 259.6
1974-02 267.94
1974-03 269.72
1974-04 276.27
1974-05 277.46
1974-06 279.25
1974-07 284.61
1974-08 287.58
1974-09 291.75
1974-10 298.3
1974-11 300.68
1974-12 301.28
1975-01 304.85
1975-02 305.45
1975-03 307.83
1975-04 313.19
1975-05 314.97
1975-06 314.97
1975-07 316.16
1975-08 314.97
1975-09 322.12
1975-10 326.88
1975-11 325.69
1975-12 325.69
1976-01 331.64
1976-02 334.03
1976-03 335.22
1976-04 342.96
1976-05 344.15
1976-06 344.74
1976-07 347.13
1976-08 344.74
1976-09 353.67
1976-10 355.46
1976-11 355.46
1976-12 359.63
1977-01 362.61
1977-02 364.99
1977-03 366.77
1977-04 372.73
1977-05 376.3
1977-06 375.11
1977-07 373.92
1977-08 374.51
1977-09 380.47
1977-10 382.85
1977-11 378.68
1977-12 378.09
1978-01 379.28
1978-02 381.66
1978-03 384.64
1978-04 388.8
1978-05 391.19
1978-06 389.4
1978-07 390.59
1978-08 391.78
1978-09 395.95
1978-10 396.54
1978-11 392.97
1978-12 392.38
1979-01 392.97
1979-02 391.78
1979-03 395.35
1979-04 400.12
1979-05 403.69
1979-06 404.28
1979-07 407.86
1979-08 403.69
1979-09 409.05
1979-10 413.81
1979-11 412.03
1979-12 415
1980-01 418.57
1980-02 422.15
1980-03 424.53
1980-04 432.27
1980-05 435.84
1980-06 437.63
1980-07 438.22
1980-08 437.03
1980-09 444.18
1980-10 445.37
1980-11 445.96
1980-12 444.77
1981-01 449.54
1981-02 448.94
1981-03 450.13
1981-04 453.7
1981-05 457.87
1981-06 458.47
1981-07 457.28
1981-08 455.49
1981-09 462.04
1981-10 463.83
1981-11 463.23
1981-12 463.83
1982-01 463.83
1982-02 463.23
1982-03 463.83
1982-04 467.4
1982-05 469.18
1982-06 469.18
1982-07 466.21
1982-08 469.78
1982-09 476.93
1982-10 478.12
1982-11 473.95
1982-12 473.35
1983-01 473.95
1983-02 472.16
1983-03 474.54
1983-04 476.93
1983-05 481.69
1983-06 478.71
1983-07 476.93
1983-08 475.73
1983-09 481.09
1983-10 485.26
1983-11 482.88
1983-12 481.09
1984-01 482.88
1984-02 485.86
1984-03 486.45
1984-04 487.64
1984-05 491.22
1984-06 487.64
1984-07 488.83
1984-08 484.67
1984-09 492.41
1984-10 495.38
1984-11 493
1984-12 494.19
1985-01 495.38
1985-02 493.6
1985-03 495.38
1985-04 498.96
1985-05 499.55
1985-06 499.55
1985-07 500.74
1985-08 499.55
1985-09 500.15
1985-10 504.91
1985-11 500.74
1985-12 501.34
1986-01 503.12
1986-02 502.53
1986-03 501.93
1986-04 503.72
1986-05 504.91
1986-06 502.53
1986-07 501.34
1986-08 500.15
1986-09 502.53
1986-10 503.12
1986-11 500.74
1986-12 499.55
1987-01 497.76
1987-02 497.76
1987-03 499.55
1987-04 504.31
1987-05 504.91
1987-06 504.31
1987-07 501.93
1987-08 501.93
1987-09 506.7
1987-10 506.7
1987-11 504.31
1987-12 503.72
1988-01 501.93
1988-02 501.34
1988-03 503.12
1988-04 505.5
1988-05 506.1
1988-06 504.91
1988-07 504.31
1988-08 505.5
1988-09 509.67
1988-10 512.05
1988-11 510.27
1988-12 508.48
1989-01 507.89
1989-02 506.1
1989-03 508.48
1989-04 517.41
1989-05 520.39
1989-06 520.39
1989-07 519.2
1989-08 518.6
1989-09 523.37
1989-10 526.94
1989-11 521.58
1989-12 522.18
1990-01 524.56
1990-02 525.15
1990-03 526.94
1990-04 531.7
1990-05 534.08
1990-06 532.3
1990-07 531.11
1990-08 532.89
1990-09 537.06
1990-10 543.02
1990-11 542.42
1990-12 541.83
1991-01 545.4
1991-02 543.61
1991-03 546.59
1991-04 549.57
1991-05 552.54
1991-06 550.16
1991-07 549.57
1991-08 550.76
1991-09 551.95
1991-10 557.9
1991-11 558.5
1991-12 556.11
1992-01 554.92
1992-02 554.33
1992-03 557.31
1992-04 563.26
1992-05 563.26
1992-06 563.26
1992-07 558.5
1992-08 560.28
1992-09 563.26
1992-10 563.26
1992-11 562.66
1992-12 562.66
1993-01 562.07
1993-02 562.66
1993-03 563.86
1993-04 568.02
1993-05 568.02
1993-06 568.02
1993-07 569.21
1993-08 571
1993-09 571.6
1993-10 571
1993-11 568.02
1993-12 568.02
1994-01 568.62
1994-02 568.62
1994-03 571.6
1994-04 572.79
1994-05 573.38
1994-06 571
1994-07 568.02
1994-08 571
1994-09 572.79
1994-10 575.17
1994-11 573.38
1994-12 572.19
1995-01 572.19
1995-02 570.4
1995-03 569.81
1995-04 571.6
1995-05 572.79
1995-06 572.19
1995-07 569.21
1995-08 569.81
1995-09 573.38
1995-10 571.6
1995-11 569.81
1995-12 569.81
1996-01 569.21
1996-02 568.02
1996-03 569.21
1996-04 572.79
1996-05 573.98
1996-06 572.19
1996-07 571.6
1996-08 571
1996-09 573.38
1996-10 574.57
1996-11 572.79
1996-12 573.38
1997-01 572.79
1997-02 571.6
1997-03 572.19
1997-04 583.5
1997-05 584.69
1997-06 584.69
1997-07 582.31
1997-08 582.91
1997-09 587.08
1997-10 588.86
1997-11 584.69
1997-12 583.5
1998-01 582.91
1998-02 582.31
1998-03 584.69
1998-04 585.89
1998-05 587.67
1998-06 585.29
1998-07 581.72
1998-08 581.12
1998-09 585.89
1998-10 590.05
1998-11 589.46
1998-12 587.08
1999-01 584.1
1999-02 581.72
1999-03 582.31
1999-04 585.29
1999-05 585.29
1999-06 583.5
1999-07 581.12
1999-08 582.91
1999-09 584.69
1999-10 585.89
1999-11 582.31
1999-12 580.53
2000-01 579.93
2000-02 578.15
2000-03 579.34
2000-04 580.53
2000-05 581.12
2000-06 579.93
2000-07 578.15
2000-08 579.93
2000-09 579.34
2000-10 579.34
2000-11 577.55
2000-12 578.15
2001-01 578.15
2001-02 576.36
2001-03 575.76
2001-04 576.36
2001-05 576.95
2001-06 575.76
2001-07 573.98
2001-08 575.76
2001-09 575.17
2001-10 575.17
2001-11 572.19
2001-12 571.6
2002-01 570.4
2002-02 567.43
2002-03 568.62
2002-04 570.4
2002-05 572.19
2002-06 571.6
2002-07 569.21
2002-08 571
2002-09 571
2002-10 569.81
2002-11 569.81
2002-12 569.81
2003-01 568.02
2003-02 566.24
2003-03 568.02
2003-04 569.81
2003-05 571
2003-06 569.21
2003-07 568.02
2003-08 569.21
2003-09 569.81
2003-10 569.81
2003-11 566.83
2003-12 567.43
2004-01 566.24
2004-02 566.24
2004-03 567.43
2004-04 567.43
2004-05 568.02
2004-06 569.21
2004-07 567.43
2004-08 568.02
2004-09 569.81
2004-10 572.79
2004-11 571.6
2004-12 568.62
2005-01 567.43
2005-02 565.64
2005-03 567.43
2005-04 568.02
2005-05 568.62
2005-06 566.24
2005-07 565.64
2005-08 566.24
2005-09 568.02
2005-10 568.02
2005-11 565.64
2005-12 566.24
2006-01 566.83
2006-02 565.05
2006-03 566.24
2006-04 567.43
2006-05 569.21
2006-06 569.21
2006-07 567.43
2006-08 571.6
2006-09 571.6
2006-10 570.4
2006-11 567.43
2006-12 568.02
2007-01 566.83
2007-02 563.86
2007-03 565.64
2007-04 567.43
2007-05 569.21
2007-06 568.02
2007-07 567.43
2007-08 570.4
2007-09 570.4
2007-10 571.6
2007-11 571
2007-12 571.6
2008-01 571
2008-02 569.81
2008-03 572.19
2008-04 571.6
2008-05 576.36
2008-06 579.34
2008-07 580.53
2008-08 582.31
2008-09 582.31
2008-10 581.72
2008-11 576.36
2008-12 573.98
2009-01 571
2009-02 569.21
2009-03 571
2009-04 571.6
2009-05 570.4
2009-06 569.21
2009-07 567.43
2009-08 569.21
2009-09 569.21
2009-10 566.83
2009-11 565.64
2009-12 564.45
2010-01 565.05
2010-02 565.05
2010-03 566.24
2010-04 566.24
2010-05 566.24
2010-06 565.05
2010-07 562.07
2010-08 562.66
2010-09 563.86
2010-10 565.64
2010-11 563.86
2010-12 562.66
2011-01 562.07
2011-02 562.07
2011-03 563.26
2011-04 563.86
2011-05 563.86
2011-06 563.26
2011-07 563.26
2011-08 563.86
2011-09 563.86
2011-10 564.45
2011-11 560.88
2011-12 561.47
2012-01 562.66
2012-02 563.86
2012-03 566.24
2012-04 566.83
2012-05 565.05
2012-06 562.07
2012-07 560.28
2012-08 561.47
2012-09 562.07
2012-10 562.07
2012-11 560.28
2012-12 560.28
2013-01 560.88
2013-02 559.69
2013-03 560.88
2013-04 562.66
2013-05 563.26
2013-06 563.26
2013-07 564.45
2013-08 566.24
2013-09 568.02
2013-10 568.62
2013-11 568.62
2013-12 569.21
2014-01 568.62
2014-02 568.62
2014-03 569.81
2014-04 581.72
2014-05 584.1
2014-06 583.5
2014-07 584.1
2014-08 585.29
2014-09 586.48
2014-10 584.69
2014-11 582.91
2014-12 582.91
2015-01 582.31
2015-02 581.12
2015-03 582.91
2015-04 585.89
2015-05 587.67
2015-06 585.89
2015-07 585.29
2015-08 585.89
2015-09 586.48
2015-10 586.48
2015-11 584.1
2015-12 584.1
2016-01 581.72
2016-02 582.31
2016-03 582.91
2016-04 584.1
2016-05 584.69
2016-06 584.1
2016-07 582.91
2016-08 582.91
2016-09 583.5
2016-10 587.08
2016-11 587.08
2016-12 585.89
2017-01 584.69
2017-02 584.1
2017-03 584.1
2017-04 586.48
2017-05 587.08
2017-06 586.48
2017-07 585.29
2017-08 586.48
2017-09 588.27
2017-10 588.27
2017-11 590.05
2017-12 591.84
2018-01 592.43
2018-02 592.43
2018-03 590.65
2018-04 590.05
2018-05 591.24
2018-06 590.65
2018-07 590.65
2018-08 594.22
2018-09 594.82
2018-10 596.6
2018-11 595.41
2018-12 593.63
2019-01 593.63
2019-02 593.63
2019-03 593.63
2019-04 595.41
2019-05 595.41
2019-06 594.22
2019-07 594.22
2019-08 595.41
2019-09 596.01
2019-10 597.79
2019-11 598.39
2019-12 598.39
2020-01 598.39
2020-02 597.2
2020-03 597.2
2020-04 596.6
2020-05 596.01
2020-06 594.82
2020-07 595.41
2020-08 596.01
2020-09 594.82
2020-10 594.22
2020-11 592.43
2020-12 591.24
2021-01 594.22
2021-02 594.22
2021-03 594.82
2021-04 590.05
2021-05 591.84
2021-06 592.43
2021-07 593.63
2021-08 593.63
2021-09 596.01
2021-10 594.82
2021-11 596.01
2021-12 596.01
2022-01 597.2
2022-02 599.58
2022-03 601.96
2022-04 604.34
2022-05 606.13
2022-06 606.13
2022-07 609.11
2022-08 611.49
2022-09 613.87
2022-10 617.44
2022-11 618.63
2022-12 619.82
2023-01 623.4
2023-02 619.23
2023-03 621.61
2023-04 625.78
2023-05 625.78
2023-06 626.37
2023-07 629.35
2023-08 630.54
2023-09 632.33
2023-10 637.69
2023-11 636.5
2023-12 635.9
2024-01 636.5
2024-02 636.5
2024-03 638.28
2024-04 641.26
2024-05 643.64
2024-06 644.24
2024-07 646.62
2024-08 649.59
2024-09 648.4
2024-10 651.98
2024-11 654.95
2024-12 659.12
2025-01 662.1
2025-02 659.72
2025-03 661.5
2025-04 663.88
2025-05 665.67
2025-06 665.08
2025-07 666.27
2025-08 667.46
2025-09 666.86
2025-10 671.62
2025-11 674.01
2025-12 672.82

All available years

Today's value of Japanese yen by year:

1955 | 1956 | 1957 | 1958 | 1959 | 1960 | 1961 | 1962 | 1963 | 1964 | 1965 | 1966 | 1967 | 1968 | 1969 | 1970 | 1971 | 1972 | 1973 | 1974 | 1975 | 1976 | 1977 | 1978 | 1979 | 1980 | 1981 | 1982 | 1983 | 1984 | 1985 | 1986 | 1987 | 1988 | 1989 | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |

Other currencies: