Currency Converter

What is Currency Converter?

Currency Converter provides real-time and historical exchange rate conversions between major world currencies and cryptocurrencies. It fetches rates from financial data APIs and supports conversion between 150+ fiat currencies using ISO 4217 codes. The tool handles decimal precision according to each currency's minor unit convention (2 decimals for USD/EUR, 0 for JPY/KRW, 3 for BHD/KWD) and shows the mid-market rate alongside typical buy/sell spreads for transparency.

International business owners pricing products, travelers planning budgets, and finance teams reconciling multi-currency accounts. The tool runs entirely in your browser — your data never leaves your device.

How to Use Currency Converter

1. Select the source currency and enter the amount to convert
2. Select the target currency from the dropdown list of 150+ currencies
3. View the converted amount at the current mid-market exchange rate
4. Toggle to historical mode and select a date to see past exchange rates

Common Use Cases

• Converting invoice amounts between currencies for international business transactions
• Checking current exchange rates before international travel or wire transfers
• Comparing historical exchange rates to evaluate timing for large currency conversions
• Calculating multi-currency totals for expense reports with mixed-currency receipts

Pro Tips

• Mid-market rates shown here are the 'real' exchange rate — banks and services like Western Union add a 1-5% markup; compare their offered rate against mid-market to see the true fee
• JPY and KRW have no minor units (no cents) — if you see '10000.00 JPY' from an API, the decimals are likely an error or convention mismatch that needs rounding
• For business accounting, always record the exchange rate used and the date of conversion — fluctuating rates between invoice date and payment date create realized gains/losses that must be reported

Why Use This Tool?

• Privacy-first: All processing happens locally in your browser. No data is transmitted to any server.
• No installation required: Works in any modern browser on desktop or mobile.
• Completely free: No account, no credit card, no usage caps.
• Fast and reliable: Powered by modern Web APIs for near-instant results.

Related Concepts

Learn more about related topics: ISO 4217, Mid-market rate, Forex spread, Exchange rate API.

Frequently Asked Questions