Currency Exchange — Economics Practice Tool

Transactions

Volume (USD)

${{ totalVolume }}

Total Fees

${{ totalFees }}

Net P&L

{{ netPnl >= 0 ? '+' : '' }}${{ Math.abs(netPnl).toFixed(2) }}

💱 Currency Converter

Amount

From

⚠️ High fee alert! This transaction carries a {{ (preview.feeRate * 100).toFixed(2) }}% service fee — above 1.5% threshold.

Rate: 1 {{ form.from }} = {{ preview.rate.toFixed(4) }} {{ form.to }}

Fee: {{ (preview.feeRate * 100).toFixed(2) }}% = {{ fmtCurrency(preview.feeAmt, form.from) }} (deducted before conversion)

Enter an amount to preview the conversion

Base currency: USD · Source: ExchangeRate-API

Currency	Rate (per USD)	Change
{{ c.flag }} {{ c.code }} {{ c.name }}	{{ c.code === 'JPY' ? rates[c.code].toFixed(2) : rates[c.code].toFixed(4) }}	{{ rateChange[c.code] > 0 ? '▲' : rateChange[c.code] < 0 ? '▼' : '—' }} {{ Math.abs(rateChange[c.code]).toFixed(2) }}%

Service fee: 0.5% – 2.0% (randomised per transaction) · Fees >1.5% trigger high-fee alert

{{ transactions.length }} transaction{{ transactions.length !== 1 ? 's' : '' }}

No transactions recorded yet. Make your first conversion above!

→

Rate: {{ tx.rate.toFixed(4) }} Fee: {{ (tx.feeRate * 100).toFixed(2) }}% ({{ fmtCurrency(tx.feeAmt, tx.from) }}) {{ tx.timestamp }}