Result: $100 in 1978 → $350,776.13 in 2024
The Mexican Peso has lost 99.971% of its value since 1978
Updated: September 11, 2025$100 in 1978 is equivalent in purchasing power to about $350,776.13 today, an increase of $350,676.13 over 46 years. The peso had an average inflation rate of 19.42% per year between 1978 and today, producing a cumulative price increase of 350,676.13%.
This means that today's prices are 3,507.76 times as high as average prices since 1978, according to the OECD and the World Bank consumer price index for Mexico. A peso today only buys 0.029% of what it could buy back then.
The inflation rate in 1978 was 17.46%. The current inflation rate compared to the end of last year is now 4.50%. If this number holds, $100 today will be equivalent in buying power to $104.50 next year.
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| Cumulative price change | 350,676.13% |
| Average inflation rate | 19.42% |
| Converted amount $100 base | $350,776.13 |
| Price difference $100 base | $350,676.13 |
| CPI in 1978 | 0.044 |
| CPI in 2024 | 153.594 |
| Inflation in 1978 | 17.46% |
| Inflation in 2024 | 4.50% |
| $100 in 1978 | $350,776.13 in 2024 |
Buying power of $100 in 1978
This chart shows a calculation of buying power equivalence for $100 in 1978 (price index tracking began in 1959).
For example, if you started with $100, you would need to end with $350,776.13 in order to "adjust" for inflation (sometimes refered to as "beating inflation").
When $100 is equivalent to $350,776.13 over time, that means that the "real value" of a single Mexican peso decreases over time. In other words, a peso will pay for fewer items at the store.
This effect explains how inflation erodes the value of a peso over time. By calculating the value in 1978 dollars, the chart below shows how $100 is worth less over 46 years.
According to the OECD and the World Bank, each of these MXN amounts below is equal in terms of what it could buy at the time:
This conversion table shows various other 1978 amounts in today's pesos, based on the 350,676.13% change in prices:
| Initial value | Equivalent value |
|---|---|
| $1 peso in 1978 | $3,507.76 pesos today |
| $5 pesos in 1978 | $17,538.81 pesos today |
| $10 pesos in 1978 | $35,077.61 pesos today |
| $50 pesos in 1978 | $175,388.06 pesos today |
| $100 pesos in 1978 | $350,776.13 pesos today |
| $500 pesos in 1978 | $1,753,880.63 pesos today |
| $1,000 pesos in 1978 | $3,507,761.26 pesos today |
| $5,000 pesos in 1978 | $17,538,806.30 pesos today |
| $10,000 pesos in 1978 | $35,077,612.60 pesos today |
| $50,000 pesos in 1978 | $175,388,062.99 pesos today |
| $100,000 pesos in 1978 | $350,776,125.99 pesos today |
| $500,000 pesos in 1978 | $1,753,880,629.93 pesos today |
| $1,000,000 pesos in 1978 | $3,507,761,259.85 pesos today |
How to calculate inflation rate for $100 since 1978
Our calculations use the following inflation rate formula to calculate the change in value between 1978 and today:
CPI today CPI in 1978
×
1978 MXN value
=
Today's value
Then plug in historical CPI values. The Mexican CPI was 0.04378702 in the year 1978 and 153.59441244038106 in 2024:
153.594412440381060.04378702
×
$100
=
$350,776.13
$100 in 1978 has the same "purchasing power" or "buying power" as $350,776.13 in 2024.
To get the total inflation rate for the 46 years between 1978 and 2024, we use the following formula:
CPI in 2024 - CPI in 1978CPI in 1978
×
100
=
Cumulative inflation rate (46 years)
Plugging in the values to this equation, we get:
153.59441244038106 - 0.043787020.04378702
×
100
=
350,676%
Data source & citation
You may use the following MLA citation for this page: “Value of 1978 Mexican Pesos today | Mexico Inflation Calculator.” Official Inflation Data, Alioth Finance, 23 Dec. 2025, https://www.officialdata.org/mexico/inflation/1978.
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.
| Cumulative price change | 350,676.13% |
| Average inflation rate | 19.42% |
| Converted amount $100 base | $350,776.13 |
| Price difference $100 base | $350,676.13 |
| CPI in 1978 | 0.044 |
| CPI in 2024 | 153.594 |
| Inflation in 1978 | 17.46% |
| Inflation in 2024 | 4.50% |
| $100 in 1978 | $350,776.13 in 2024 |