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はじめに

Currency Converter — Live exchange rates for 170+ world currencies. Enter Amount, From, To to get an instant, accurate result.

計算式

Converted amount = amount ÷ rate(from→USD) × rate(USD→to), using live exchange rates fetched from public FX APIs (Frankfurter/ECB, with an ExchangeRate-API fallback).

ステップごとの説明

Enter the Amount.
Enter the From.
Enter the To.
Click Calculate to see your result instantly.

実例

Example: With Amount = 100, From = USD, To = EUR, the Currency Converter gives Result: 89.238, Unit Rate: 0.8924, Date: 2026-10-09.

よくある質問

How current are the exchange rates?

Rates are cached for up to 60 minutes and refreshed from live FX data providers after that.

What happens if a rate provider is down?

The calculator automatically falls back to a second provider so a single outage doesn't block conversions.

What inputs does the Currency Converter need?

You'll need to provide: Amount, From, To. All fields use sensible defaults, so you can see a working example immediately and then adjust the values to match your own numbers.

How accurate is the Currency Converter?

The Currency Converter applies the formula exactly as calculated — Converted amount = amount ÷ rate(from→USD) × rate(USD→to), using live exchange rates fetched from public FX APIs (Frankfurter/ECB, with an ExchangeRate-API fallback). — so results are precise for the inputs you provide. Accuracy depends on entering correct, realistic input values.

Are these results guaranteed?

No. The Currency Converter gives an estimate based on the numbers you enter and standard financial formulas — actual rates, fees, taxes, and terms vary by lender, institution, and jurisdiction, and can change over time. This is not financial advice; consult a qualified financial professional for decisions specific to your situation.

Is the Currency Converter free to use?

Yes, the Currency Converter is completely free, requires no signup, and runs instantly in your browser.