# Currency Calculator

> Convert an amount using an exchange rate you enter. No live API is required.

Page: https://askcalculators.com/calculator/currency-calculator/
Definition: https://askcalculators.com/calculator/currency-calculator/definition.json
JSON Schema: https://askcalculators.com/calculator/currency-calculator/schema.json
Version: 4.0.0
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-calculator/?amount=100&from=USD&to=EUR&rate=0.92

## Inputs
- amount: Amount; type=money; required; default=100; min=0
- from: From; type=select; required; default=USD; values=USD|EUR|GBP|JPY|CAD|AUD|CHF|CNY|INR|BRL|MXN|SGD
- to: To; type=select; required; default=EUR; values=USD|EUR|GBP|JPY|CAD|AUD|CHF|CNY|INR|BRL|MXN|SGD
- rate: Exchange rate; type=number; required; default=0.92; min=1e-8

## Outputs
- converted: Converted amount; format=number; primary
- rateLine: Rate used; format=text

## Formula
Converted amount = Amount × Exchange rate

- Amount: Value in the source currency
- Exchange rate: Target units for one source unit

Rates change. Enter a current rate from a source you trust.

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