Currency Converter (Your Own Rate)
Convert an amount at a rate you enter, and see what the margin really costs you.
Results
The dashed line marks the value you entered.
What this tool does
This converter deliberately fetches nothing. Exchange rates move every minute, a page that carried a table of them would only be able to lie, and a page that called somebody's API would stop working the day that API changed its mind. So the rate is the one you type — off your bank's screen, off the bureau's board, off a news site — and the result is exactly as current as that number. What the tool adds to a multiplication is the margin. Almost nobody exchanges money at the mid-market rate you see quoted; the gap between that rate and the one you are actually given is the fee, whether or not anyone calls it one, and putting a percentage in that field turns it into money.
Formula
received = amount × rate × (1 − margin ÷ 100)
Variables
| Symbol | Meaning | Unit |
|---|---|---|
amt | Amount | — |
rate | Rate you were quoted | — |
fee | Margin or fee taken | % |
NET | What you actually receive | — |
GRO | What the quoted rate alone would give | — |
CST | What the margin costs you | — |
EFF | Rate you are really getting | — |
INV | The same rate the other way round | — |
Worked example
- Amount1000
- Rate you were quoted1.08
- Margin or fee taken1.5 %
- What you actually receive1063.80
- What the quoted rate alone would give1080.00
- What the margin costs you16.20
- Rate you are really getting1.063800
- The same rate the other way round0.925926
Limitations
- The rate is the one you type. Nothing is fetched from the internet, so the result is exactly as current as the number you entered.
- This is an informational calculator, not personalised financial advice. Rates, fees, taxes and contract conditions vary between institutions and countries.
- The calculation runs at full precision and only the display is rounded. If you copy an intermediate value and retype it, small differences can appear.