Currency converter

Enter an amount and the exchange rate yourself to convert between two currencies, apply an optional fee or spread, and see the effective and inverse rate. This tool does not fetch live rates — you stay in control. Nothing is uploaded.

Amount

From (currency code)

To (currency code)

Exchange rate (1 from = X to)

Fee / spread (%, optional)

—Converted amount

—Effective rate (after fee)

—Inverse rate (1 / rate)

You enter the rate yourself — this tool does NOT fetch live exchange rates.

Everything runs in your browser. No upload, no sign-up.

How it works

STEP 1

Enter amount & rate

Type the amount and the exchange rate you want to use (1 from = X to).

STEP 2

Add a fee

Optionally enter a fee or spread % to apply to the conversion.

STEP 3

See the result

Get the converted amount, effective rate after fee and inverse rate. All private.