# Currency Exchange Calculator Convert an amount between currencies using live exchange rates from a free, no-key API (open.er-api.com). Supports 160+ world currencies. Shows the converted amount, the exchange rate used, a comparison table against popular currencies, and the rate update timestamp. > Canonical page: https://elysiatools.com/en/tools/currency-exchange - **Category:** Finance - **Keywords:** currency, exchange, forex, conversion, exchange rate, money, usd, eur, finance ## Overview The Currency Exchange Calculator allows you to instantly convert monetary amounts between over 160 world currencies using live exchange rates fetched from a free, no-key API. It provides the converted amount, the exact exchange rate used, a comparison table against popular global currencies, and the rate update timestamp to ensure financial accuracy. ## Inputs - **Amount** (number): e.g. 1000 - **From Currency** (text): e.g. USD - **To Currency** (text): e.g. EUR - **Decimal Places** (number) ## When to use - When you need to calculate the exact conversion value between two global currencies using real-time exchange rates. - When comparing a specific monetary amount against multiple popular currencies simultaneously for budgeting or pricing. - When verifying the latest currency exchange rates and their last update timestamp for financial reporting or travel planning. ## How it works - Enter the monetary amount you want to convert and specify the source and target currency codes. - Set the desired decimal precision for the output calculation. - The tool fetches the latest exchange rates from the open.er-api.com API to perform the conversion. - View the converted total, the active exchange rate, a comparison table of popular currencies, and the rate timestamp. ## Use cases - Converting international freelance invoices to your local currency to verify payment amounts. - Estimating travel expenses and comparing costs across multiple foreign currencies before a trip. - Checking current forex rates to evaluate pricing for cross-border e-commerce purchases. ## Frequently asked questions ### Where does the tool get its exchange rates? The tool fetches live exchange rates from the open.er-api.com API. ### How many currencies are supported? It supports over 160 world currencies, including USD, EUR, GBP, JPY, and CAD. ### Can I adjust the precision of the converted amount? Yes, you can configure the decimal places option from 0 up to 6. ### Does this tool show historical exchange rate charts? No, this tool focuses on live conversions, comparison tables, and current rate timestamps. ### How often are the exchange rates updated? The rates are updated based on the latest data provided by the open.er-api.com API, and the exact update timestamp is displayed in the results. ## Related tools - [Galactic / Equatorial Coordinate Converter](https://elysiatools.com/en/tools/galactic-coordinate-converter): Convert astronomical positions between equatorial (RA/Dec J2000 and B1950), galactic (l/b), and supergalactic (SGL/SGB) coordinate systems. 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