What is currency conversion?

Currency conversion translates an amount from one country’s currency to another using the current exchange rate. Exchange rates fluctuate constantly based on supply and demand in the global foreign exchange (forex) market – the largest market in the world, trading over $7.5 trillion daily. People convert currencies for international travel, online shopping from foreign sites, freelance payments from clients abroad, remittances, business transactions, and investment in foreign assets. This calculator uses live exchange rates from open.er-api.com (a free, no-key public API updated daily) to give you accurate, up-to-date conversions for 150+ currencies. All processing happens in your browser – no signup or tracking.

How to use this tool

1. Enter the amount — How much you want to convert. Decimals supported.
2. Choose ‘from’ currency — The currency your amount is in. Popular options at the top – USD, EUR, INR, GBP, JPY etc.
3. Choose ‘to’ currency — The currency you want to convert to. 150+ supported including all major and most minor currencies.
4. Read converted amount — Result updates instantly. Below shows the unit rate (1 from = X to) and timestamp of when rates were last refreshed.
5. Optional: swap or refresh — Swap button reverses from and to. Refresh button fetches latest rates if you’ve kept the tab open for hours.

How exchange rates work

An exchange rate is the price of one currency in terms of another. Example: 1 USD = 83.5 INR means 1 dollar buys 83.5 rupees today.

Conversion formula:

Amount in target currency = Amount in source × (Rate of source in USD) × (1 / Rate of target in USD)

Most APIs use USD as the base for cross-rate calculations. For direct rates (e.g. EUR to GBP), the system computes via USD bridge.

Rates come from open.er-api.com which aggregates data from major central banks and reuters. Updated daily at 00:00 UTC.

Examples

• 100 USD to INR: ~₹8,350 (typical 2026 rate)
• 1,000 EUR to USD: ~$1,080 (varies daily)
• 500 GBP to INR: ~₹52,000
• 10,000 JPY to USD: ~$67
• 5,000 INR to USD: ~$60
• $100 USD to AED: ~367 AED (UAE Dirham is pegged at 3.67)

Tips & best practices

• Bank rates are typically 1-3% worse than these mid-market rates – banks profit from the spread
• Use multi-currency cards (Wise, Revolut, niyo) for travel – they offer near-mid-market rates with low fees
• For large transfers (over $1000), use TransferWise/Wise or Western Union Online instead of banks – save 1-2%
• Avoid airport currency exchange counters – they charge 5-15% markup
• For frequent international shopping, get a credit card that doesn’t charge foreign transaction fees (3-4% saved on every purchase)
• Time large currency conversions if possible – rates fluctuate 1-3% per day in normal markets
• Set rate alerts at xe.com or wise.com to convert at favorable moments

Limitations & notes

Exchange rates shown are interbank mid-market rates – what banks and large institutions trade at. Retail customers (travelers, individuals) typically get rates 2-5% worse depending on the provider. Crypto, some exotic currencies, and pegged currencies may have wider spreads. This tool fetches rates once when loaded – click Refresh for the latest if you’ve kept the tab open. For real-time forex trading or commercial use, subscribe to a professional rate feed.

Frequently Asked Questions

How accurate are these exchange rates?

These are interbank mid-market rates from open.er-api.com, updated daily. They are the same rates Google Search shows. Banks and forex bureaus charge a markup of 1-5% on top of these mid-market rates.

Why is the rate different from my bank’s rate?

Banks and money changers add a markup to make profit – typically 1-3% for online transfers, 3-7% at branches, and 5-15% at airport counters. The rates shown here are mid-market (no markup) – the wholesale rate banks buy/sell at.

How often are rates updated?

Open exchange rate APIs typically update once or twice per day. Click the ‘Refresh rates’ button to get the latest. For real-time tick-by-tick rates (used by forex traders), professional services like Bloomberg or Reuters are needed.

What currencies are supported?

150+ currencies including all G10, all Asian, all major emerging market currencies (BRL, ZAR, MXN, TRY, etc.), and most minor currencies. Even some exotic ones like Vanuatu Vatu or Falkland Islands Pound.

What’s the best way to convert money for travel?

Don’t use airport counters. Best options: (1) Multi-currency travel card from Wise, Niyo, or Revolut – mid-market rates with small fees. (2) International debit card from your bank – check foreign ATM fees. (3) Withdraw from ATMs at destination using a no-foreign-fee credit card. Avoid carrying large cash for safety reasons.

Can I use this for business transactions?

For estimates yes. For actual business transactions you need the specific rate quoted by your bank or forex provider at the moment of transaction. Spot rates change every second in global markets.

Does the tool save my conversion history?

No – we don’t store anything. The tool runs entirely in your browser and we have no server-side logging.

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