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THE FEUTEX TOOLKIT

Currency Exchange Spread Audit

Compare an offered exchange rate against a reference rate you provide.

Travel workspace● Runs in your browser
01 Your input
02 Your result
View or copy raw result data
FormulaReceived = Math.max(0,amount-fee)*offered; Loss = amount*reference-Math.max(0,amount-fee)*offered; Spread = 100*(1-offered/reference)

Made for real tasks

  • Compare an offered exchange rate against a reference rate you provide.
  • Compare two scenarios by changing the inputs and rerunning the tool.
Explore step-by-step workflows →

Worked example

Inputs

Amount
400 source currency
Reference
1.1 target/source
Offered
1.04 target/source
Fee
5 source currency

Expected results

Received
410.8 target currency
Loss
29.2 target currency
Spread
5.454545455 %

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

  1. Enter amount, reference, offered, fee.
  2. Use consistent units shown beside each input. Run the calculation and review the assumptions below.

Try this example

{
  "amount": 400,
  "reference": 1.1,
  "offered": 1.04,
  "fee": 5
}

Accuracy and scope

Reference and offered rates are target currency per one source unit. Fixed fee is deducted in source currency before exchange. No live rate feed or tax treatment; negative loss means the offer beats the reference.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.