Currency Converter
Convert between 170 world currencies.
What is Currency Conversion?
Currency conversion is the process of exchanging one currency for another at the current exchange rate. It's essential for international travel, online shopping from foreign retailers, international business transactions, and global investing. Exchange rates fluctuate constantly based on market conditions.
Currency Conversion Formula
Converted Amount = Original Amount * Exchange Rate. For example, converting $1,000 USD to EUR at 0.85: $1,000 * 0.85 = €850. To convert back: €850 / 0.85 = $1,000. Note: Real-world conversions include a spread (difference between buy and sell rates) and possibly fees.
Factors Affecting Exchange Rates
- •Exchange rates are influenced by: interest rates (higher rates attract foreign investment), inflation (lower inflation strengthens currency), economic growth (strong GDP growth attracts investment), political stability, government debt, trade balance, and market speculation. Central bank interventions can also impact rates.
Understanding the Spread
The spread is the difference between the rate at which a currency exchange buys and sells a currency. For example, if the mid-market rate is 1 USD = 0.85 EUR, the exchange might buy at 0.83 and sell at 0.87. The spread (0.04) is their profit. Always compare the total cost, not just the advertised rate.
Tips for Currency Conversion
Use the mid-market rate as a benchmark (available on financial websites). Avoid airport currency exchanges (worst rates). Use credit cards with no foreign transaction fees for purchases. Compare total costs including fees, not just exchange rates. Consider timing—rates fluctuate daily. For large amounts, use forward contracts to lock in rates.
Comparison Analysis
Currency Exchange Methods Comparison
| Criteria | Bank | Airport Exchange | Online Service | Credit Card |
|---|---|---|---|---|
| Exchange Rate | Near mid-market | Poor (5-10% markup) | Near mid-market | Near mid-market |
| Fees | $5-30 per transaction | Often hidden in rate | Low or none | 0-3% foreign transaction fee |
| Convenience | Moderate | High | High | Very high |
| Best For | Large amounts, planned exchanges | Emergency cash | Regular transfers | Travel purchases |
Content Verification
Expert Review
Reviewed by Alex Rivera, Certified International Finance Professional, Forex Market Analyst
Authoritative Sources
Based on IMF data, Federal Reserve exchange rate publications, and BIS forex market reports
Last Reviewed
Content verified May 2026 against current forex market standards and exchange rate mechanisms