Convert a quote-currency amount back into base currency using the supplied pair rate, conversion fee, and optional account-currency rate.
STEP-BY-STEP
How to use this tool
- Identify the quote-currency amount and confirm the order of the currency pair.
- Enter the number of quote units equal to one base unit.
- Add the estimated conversion fee or markup.
- Enter the optional base-to-account rate only when a third currency is required.
- Review gross base, fee, net base, and optional account amounts.
- Verify the executable provider rate, spread, fixed fees, and settlement amount.
WORKED EXAMPLE
See the calculation in context
At a rate of 1.1000 quote units per base unit, 1,100 quote units equal 1,000 base units before fees. A 0.5% fee leaves an estimated 995 base units.
Calculation method
Gross base amount = quote amount ÷ quote units per base unit. Net base amount = gross base amount − percentage fee. Optional account amount = net base amount × base-to-account rate.
AVOID THESE ERRORS
Common mistakes
- Multiplying when the quote amount should be divided by the pair rate
- Reversing the pair without using the inverse rate
- Ignoring hidden spread when the listed fee is zero
- Applying the fee in the wrong currency
- Using a stale reference rate
- Converting into a third currency twice
FREQUENTLY ASKED
Questions and answers
Why divide by the pair rate?
The supplied rate states how many quote units equal one base unit, so a quote amount is divided to recover base units.
What if I only know the inverse rate?
Invert it first or use the Base Currency Converter in the direction matching the quote.
Is this suitable for broker accounting?
Use it as an estimate and reconcile against the broker’s actual conversion and statement.