# Currency Appreciation and Depreciation Calculator

> Measure the appreciation or depreciation of a base currency when its quoted exchange rate changes.

Page: https://askcalculators.com/calculator/currency-appreciation-and-depreciation-calculator/
Definition: https://askcalculators.com/calculator/currency-appreciation-and-depreciation-calculator/definition.json
JSON Schema: https://askcalculators.com/calculator/currency-appreciation-and-depreciation-calculator/schema.json
Version: 1.0.0
Maintained by: AskCalculators (software project; not a credentialed reviewer)
Qualified review: pending. Automated checks do not establish professional approval.
Page status: Live
Review status: Pending

## Use
Open the calculator page and enter values. Query-string parameters can restore and bookmark a calculation.
Example: https://askcalculators.com/calculator/currency-appreciation-and-depreciation-calculator/?oldRate=1.1&newRate=1.2&baseAmount=1000

## Inputs
- oldRate: Old quote rate; type=number; required; default=1.1; min=1e-9
- newRate: New quote rate; type=number; required; default=1.2; min=1e-9
- baseAmount: Base-currency amount; type=number; required; default=1000; min=0

## Outputs
- baseCurrencyChange: Base currency change; format=percent; primary
- quoteCurrencyInverseChange: Quote currency change versus base; format=percent
- oldQuoteValue: Old quote-currency value; format=number
- newQuoteValue: New quote-currency value; format=number
- changeType: Base currency movement; format=text

## Formula
base appreciation = (new quote rate − old quote rate) ÷ old quote rate × 100%

## Rules
- Empty optional inputs are undefined, not zero.
- Hidden conditional inputs are ignored.
- Do not invent missing required inputs.

Notice: This calculator does not retrieve live exchange rates. Enter rates quoted on the same basis.