Show the value of money over time.
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Use this when the user asks a us inflation calculator question, for example what is $100 worth today, the value of money over time, or a dollar inflation calculator, buying power calculator or consumer price index calculator request for US dollars. It converts one US dollar amount between two periods with the published CPI-U index and returns the adjusted amount, both index values, the cumulative inflation, the average annual rate, and the buying-power change. It works for published periods from 1913-01 to the latest bundled month, year or YYYY-MM inputs, and amounts greater than zero up to one trillion dollars including fractional cents; only the output is rounded to cents. Do not use for other countries, for regional or core CPI, for forecasts, or for financial advice.
The to period as a year such as 1990, or a year and month such as 1990-06. 1913-01 or later and not after the latest published month.
The from period as a year such as 1990, or a year and month such as 1990-06. 1913-01 or later and not after the latest published month.
The amount of US dollars to adjust, e.g. 100, 1234.56 or 1.005. Greater than zero and no more than 1,000,000,000,000; fractional cents are accepted and only the result is rounded to cents.
Use this when the user asks a us inflation calculator question, for example what is $100 worth today, the value of money over time, or a dollar inflation calculator, buying power calculator or consumer price index calculator request for US dollars. It converts one US dollar amount between two periods with the published CPI-U index and returns the adjusted amount, both index values, the cumulative inflation, the average annual rate, and the buying-power change. It works for published periods from 1913-01 to the latest bundled month, year or YYYY-MM inputs, and amounts greater than zero up to one trillion dollars including fractional cents; only the output is rounded to cents. Do not use for other countries, for regional or core CPI, for forecasts, or for financial advice.
| Argument | Type | Description |
|---|---|---|
| to* | string | The to period as a year such as 1990, or a year and month such as 1990-06. 1913-01 or later and not after the latest published month. |
| from* | string | The from period as a year such as 1990, or a year and month such as 1990-06. 1913-01 or later and not after the latest published month. |
| amount* | number | The amount of US dollars to adjust, e.g. 100, 1234.56 or 1.005. Greater than zero and no more than 1,000,000,000,000; fractional cents are accepted and only the result is rounded to cents. |
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"required": [
"amount",
"from",
"to"
],
"properties": {
"to": {
"type": "string",
"maxLength": 7,
"minLength": 4,
"description": "The to period as a year such as 1990, or a year and month such as 1990-06. 1913-01 or later and not after the latest published month."
},
"from": {
"type": "string",
"maxLength": 7,
"minLength": 4,
"description": "The from period as a year such as 1990, or a year and month such as 1990-06. 1913-01 or later and not after the latest published month."
},
"amount": {
"type": "number",
"maximum": 1000000000000,
"description": "The amount of US dollars to adjust, e.g. 100, 1234.56 or 1.005. Greater than zero and no more than 1,000,000,000,000; fractional cents are accepted and only the result is rounded to cents.",
"exclusiveMinimum": 0
}
}
}Use this when the user wants a consumer price index calculator, inflation rate calculator or cpi calculator across many years: a year-by-year table of the annual average CPI-U and the yearly inflation rate, with a CSV download. It uses the bundled published CPI-U series for 1913 through the latest full year, up to 120 years per call. Do not use for a single amount conversion (use adjust_for_inflation), for other countries, for monthly percent changes, or for forecasts.
| Argument | Type | Description |
|---|---|---|
| end_year* | integer | The last year of the table, e.g. 2024. At most 120 years after the start year and not after the latest full year. |
| start_year* | integer | The first year of the table, e.g. 1990. 1913 or later. |
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"required": [
"start_year",
"end_year"
],
"properties": {
"end_year": {
"type": "integer",
"maximum": 2200,
"minimum": 1913,
"description": "The last year of the table, e.g. 2024. At most 120 years after the start year and not after the latest full year."
},
"start_year": {
"type": "integer",
"maximum": 2200,
"minimum": 1913,
"description": "The first year of the table, e.g. 1990. 1913 or later."
}
}
}