Currency Exchange Calculator
Planning international travel or sending money abroad? This currency exchange calculator helps you understand the true cost of currency conversion. Compare rates from banks, online services, currency exchanges, and credit cards. See how much you'll actually receive after fees and markups. Perfect for travel agencies, forex services, and international money transfer businesses.
Try the Calculator
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export function currencyExchangeCalculator(form: FormTs) {
form.addRow(row => {
row.addTextPanel('header', {
computedValue: () => 'Currency Exchange Calculator',
customStyles: { 'font-size': '1.5rem', 'font-weight': '600', 'color': '#1e293b' }
});
});
form.addSpacer({ height: 20 });
// Amount Section
const amountSection = form.addSubform('amount', { title: '💵 Amount to Convert' });
amountSection.addRow(row => {
row.addDecimal('sourceAmount', {
label: 'Amount',
min: 0.01,
max: 100000000,
defaultValue: 1000,
isRequired: true
}, '2fr');
row.addDropdown('sourceCurrency', {
label: 'From Currency',
options: [
{ id: 'USD', name: 'USD - US Dollar' },
{ id: 'EUR', name: 'EUR - Euro' },
{ id: 'GBP', name: 'GBP - British Pound' },
{ id: 'JPY', name: 'JPY - Japanese Yen' },
{ id: 'CAD', name: 'CAD - Canadian Dollar' },
{ id: 'AUD', name: 'AUD - Australian Dollar' },
{ id: 'CHF', name: 'CHF - Swiss Franc' },
{ id: 'CNY', name: 'CNY - Chinese Yuan' },
{ id: 'INR', name: 'INR - Indian Rupee' },
{ id: 'MXN', name: 'MXN - Mexican Peso' },
{ id: 'BRL', name: 'BRL - Brazilian Real' },
{ id: 'KRW', name: 'KRW - South Korean Won' },
{ id: 'SGD', name: 'SGD - Singapore Dollar' },
{ id: 'HKD', name: 'HKD - Hong Kong Dollar' },
{ id: 'PLN', name: 'PLN - Polish Zloty' }
],
defaultValue: 'USD',
isRequired: true
}, '1fr');
});
// Target Currency Section
const targetSection = form.addSubform('target', { title: '🔄 Convert To' });
targetSection.addRow(row => {
row.addDropdown('targetCurrency', {
label: 'To Currency',
options: [
{ id: 'USD', name: 'USD - US Dollar' },
{ id: 'EUR', name: 'EUR - Euro' },
{ id: 'GBP', name: 'GBP - British Pound' },
{ id: 'JPY', name: 'JPY - Japanese Yen' },
{ id: 'CAD', name: 'CAD - Canadian Dollar' },
{ id: 'AUD', name: 'AUD - Australian Dollar' },
{ id: 'CHF', name: 'CHF - Swiss Franc' },
{ id: 'CNY', name: 'CNY - Chinese Yuan' },
{ id: 'INR', name: 'INR - Indian Rupee' },
{ id: 'MXN', name: 'MXN - Mexican Peso' },
{ id: 'BRL', name: 'BRL - Brazilian Real' },
{ id: 'KRW', name: 'KRW - South Korean Won' },
{ id: 'SGD', name: 'SGD - Singapore Dollar' },
{ id: 'HKD', name: 'HKD - Hong Kong Dollar' },
{ id: 'PLN', name: 'PLN - Polish Zloty' }
],
defaultValue: 'EUR',
isRequired: true
});
});
// Exchange Provider Section
const providerSection = form.addSubform('provider', { title: '🏦 Exchange Provider' });
providerSection.addRow(row => {
row.addRadioButton('providerType', {
label: 'Provider Type',
options: [
{ id: 'bank', name: 'Bank (1.5-3% markup)' },
{ id: 'exchange', name: 'Currency Exchange (2-5% markup)' },
{ id: 'online', name: 'Online Service (0.5-1.5% markup)' },
{ id: 'card', name: 'Credit Card (2-3% foreign fee)' },
{ id: 'custom', name: 'Custom Rate' }
],
defaultValue: 'online',
isRequired: true
});
});
providerSection.addRow(row => {
row.addDecimal('customMarkup', {
label: 'Custom Markup Percentage',
min: 0,
max: 20,
defaultValue: 1,
suffix: '%',
isVisible: () => providerSection.radioButton('providerType')?.value() === 'custom'
}, '1fr');
row.addDecimal('flatFee', {
label: 'Flat Transaction Fee',
min: 0,
max: 100,
defaultValue: 0,
prefix: '$',
tooltip: 'Fixed fee charged per transaction'
}, '1fr');
});
form.addSpacer({ height: 20, showLine: true, lineStyle: 'dashed' });
// Exchange Rates Reference
const ratesSection = form.addSubform('rates', { title: '📈 Exchange Rates (vs USD)', isCollapsible: true });
ratesSection.addRow(row => {
row.addTextPanel('ratesInfo', {
computedValue: () => {
return 'EUR: 0.92 | GBP: 0.79 | JPY: 149.50 | CAD: 1.36 | AUD: 1.53 | CHF: 0.88 | CNY: 7.24 | INR: 83.12 | MXN: 17.15 | BRL: 4.97 | KRW: 1,320 | SGD: 1.34 | HKD: 7.82 | PLN: 3.98';
},
customStyles: { 'font-size': '0.85rem', 'color': '#475569', 'text-align': 'center' }
});
});
ratesSection.addRow(row => {
row.addTextPanel('rateNote', {
computedValue: () => 'Note: Rates are approximate mid-market rates. Actual rates vary by provider.',
customStyles: { 'font-size': '0.75rem', 'color': '#94a3b8', 'text-align': 'center', 'font-style': 'italic' }
});
});
// Results Section
const resultsSection = form.addSubform('results', { title: '📊 Conversion Details', isCollapsible: false });
const getExchangeRate = (from: string, to: string): number => {
const usdRates: Record<string, number> = {
'USD': 1, 'EUR': 0.92, 'GBP': 0.79, 'JPY': 149.50, 'CAD': 1.36,
'AUD': 1.53, 'CHF': 0.88, 'CNY': 7.24, 'INR': 83.12, 'MXN': 17.15,
'BRL': 4.97, 'KRW': 1320, 'SGD': 1.34, 'HKD': 7.82, 'PLN': 3.98
};
if (from === to) return 1;
const fromToUsd = 1 / (usdRates[from] || 1);
const usdToTarget = usdRates[to] || 1;
return fromToUsd * usdToTarget;
};
resultsSection.addRow(row => {
row.addTextPanel('midMarketRate', {
label: 'Mid-Market Rate',
computedValue: () => {
const from = amountSection.dropdown('sourceCurrency')?.value() || 'USD';
const to = targetSection.dropdown('targetCurrency')?.value() || 'EUR';
const rate = getExchangeRate(from, to);
return `1 ${from} = ${(Number(rate) || 0).toFixed(4)} ${to}`;
},
customStyles: { 'font-size': '1rem', 'font-weight': '500', 'color': '#475569' }
}, '1fr');
row.addTextPanel('providerRate', {
label: 'Provider Rate (with markup)',
computedValue: () => {
const from = amountSection.dropdown('sourceCurrency')?.value() || 'USD';
const to = targetSection.dropdown('targetCurrency')?.value() || 'EUR';
const provider = providerSection.radioButton('providerType')?.value() || 'online';
const customMarkup = providerSection.decimal('customMarkup')?.value() || 1;
const markups: Record<string, number> = {
bank: 2.25, exchange: 3.5, online: 1, card: 2.5, custom: customMarkup
};
const rate = getExchangeRate(from, to);
const markup = markups[provider] || 1;
const adjustedRate = rate * (1 - markup / 100);
return `1 ${from} = ${(Number(adjustedRate) || 0).toFixed(4)} ${to}`;
},
customStyles: { 'font-size': '1rem', 'font-weight': '500', 'color': '#475569' }
}, '1fr');
});
resultsSection.addRow(row => {
row.addPriceDisplay('markupCost', {
label: 'Markup Cost',
computedValue: () => {
const amount = amountSection.decimal('sourceAmount')?.value() || 1000;
const from = amountSection.dropdown('sourceCurrency')?.value() || 'USD';
const to = targetSection.dropdown('targetCurrency')?.value() || 'EUR';
const provider = providerSection.radioButton('providerType')?.value() || 'online';
const customMarkup = providerSection.decimal('customMarkup')?.value() || 1;
const flatFee = providerSection.decimal('flatFee')?.value() || 0;
const markups: Record<string, number> = {
bank: 2.25, exchange: 3.5, online: 1, card: 2.5, custom: customMarkup
};
const rate = getExchangeRate(from, to);
const markup = markups[provider] || 1;
const midMarketResult = amount * rate;
const adjustedResult = amount * rate * (1 - markup / 100);
const toUsdRate = getExchangeRate(to, 'USD');
return ((midMarketResult - adjustedResult) * toUsdRate) + flatFee;
},
variant: 'default'
}, '1fr');
row.addTextPanel('markupPercent', {
label: 'Effective Fee',
computedValue: () => {
const provider = providerSection.radioButton('providerType')?.value() || 'online';
const customMarkup = providerSection.decimal('customMarkup')?.value() || 1;
const markups: Record<string, number> = {
bank: 2.25, exchange: 3.5, online: 1, card: 2.5, custom: customMarkup
};
return `${markups[provider]}%`;
},
customStyles: { 'font-size': '1.2rem', 'font-weight': '600', 'text-align': 'center', 'color': '#dc2626' }
}, '1fr');
});
// Summary Section
const summarySection = form.addSubform('summary', {
title: '💰 You Will Receive',
isCollapsible: false,
sticky: 'bottom'
});
summarySection.addRow(row => {
row.addTextPanel('convertedAmount', {
computedValue: () => {
const amount = amountSection.decimal('sourceAmount')?.value() || 1000;
const from = amountSection.dropdown('sourceCurrency')?.value() || 'USD';
const to = targetSection.dropdown('targetCurrency')?.value() || 'EUR';
const provider = providerSection.radioButton('providerType')?.value() || 'online';
const customMarkup = providerSection.decimal('customMarkup')?.value() || 1;
const markups: Record<string, number> = {
bank: 2.25, exchange: 3.5, online: 1, card: 2.5, custom: customMarkup
};
const rate = getExchangeRate(from, to);
const markup = markups[provider] || 1;
const result = amount * rate * (1 - markup / 100);
const currencySymbols: Record<string, string> = {
'USD': '$', 'EUR': '€', 'GBP': '£', 'JPY': '¥', 'CAD': 'C$',
'AUD': 'A$', 'CHF': 'CHF ', 'CNY': '¥', 'INR': '₹', 'MXN': 'MX$',
'BRL': 'R$', 'KRW': '₩', 'SGD': 'S$', 'HKD': 'HK$', 'PLN': 'zł'
};
const symbol = currencySymbols[to] || '';
return `${symbol}${result.toLocaleString('en-US', { minimumFractionDigits: 2, maximumFractionDigits: 2 })}`;
},
customStyles: { 'font-size': '2rem', 'font-weight': '700', 'text-align': 'center', 'color': '#059669' }
});
});
summarySection.addRow(row => {
row.addTextPanel('conversionSummary', {
computedValue: () => {
const amount = amountSection.decimal('sourceAmount')?.value() || 1000;
const from = amountSection.dropdown('sourceCurrency')?.value() || 'USD';
const to = targetSection.dropdown('targetCurrency')?.value() || 'EUR';
return `Converting ${amount.toLocaleString()} ${from} to ${to}`;
},
customStyles: { 'font-size': '0.95rem', 'text-align': 'center', 'color': '#64748b' }
});
});
summarySection.addRow(row => {
row.addTextPanel('disclaimer', {
computedValue: () => 'Exchange rates are indicative only. Actual rates may vary. Always check with your provider before transacting.',
customStyles: { 'font-size': '0.8rem', 'color': '#94a3b8', 'text-align': 'center' }
});
});
form.configureSubmitButton({
label: 'Find Best Rates'
});
}
Frequently Asked Questions
What is the mid-market rate?
The mid-market rate is the 'real' exchange rate - the midpoint between buy and sell prices on currency markets. Banks and exchange services typically add a markup to this rate.
Why do providers charge different rates?
Each provider has different operating costs, profit margins, and business models. Online services typically offer better rates due to lower overhead, while airport exchanges charge premium rates for convenience.
Should I exchange money before traveling?
It depends on your destination. For major currencies, using an ATM abroad with a no-fee debit card often offers the best rates. For less common currencies, exchanging some money beforehand is wise.
Are credit cards good for foreign purchases?
Cards with no foreign transaction fees can be excellent for purchases. However, using credit cards for cash advances incurs high fees. Look for travel-friendly credit cards.
How often do exchange rates change?
Major currency pairs are traded 24/7 and rates can change by the second. However, retail exchange rates are typically updated once or twice daily.