Currency Arbitrage Detector
Check for triangular arbitrage opportunities

Currency Arbitrage Detector turns check for triangular arbitrage opportunities into an instant, step-by-step result. You provide Rate A→B, Rate B→C and Rate C→A; the tool does the rest in real time. The calculation is displayed with all its working, so the number always makes sense. Use it whenever you need a reliable number without opening a spreadsheet. Privacy-first: the calculation is local, your data stays yours, and the tool keeps working offline. Searching for triangular arbitrage calculator currency exchange profit or free online currency arbitrage detector calculator? This tool covers it — free, fast, and private. Designed for real people — plain labels and instant feedback on every field. Open Currency Arbitrage Detector, enter your numbers, and you will have a trustworthy answer before you know it.
What does the page calculator do?
Currency Arbitrage Detector works out the arbitrage from the Rate A→B, Rate B→C, and Rate C→A, following standard Finance conventions — the page defaults produce a arbitrage of +0.98%.
- Inputs: Rate A→B, Rate B→C, and Rate C→A.
- Output: the arbitrage, plus the intermediate steps behind it.
- Method: the standard Finance formula, evaluated entirely in your browser.
Quick answer
With the default inputs (rate a→b of 1.1, rate b→c of 0.85, rate c→a of 1.08), currency arbitrage detector returns a arbitrage of +0.98%. Assumptions and limits are summarized below.
How does the Currency Arbitrage Detector work?
Currency Arbitrage Detector computes the arbitrage directly from your inputs — the Rate A→B, Rate B→C, and Rate C→A feed the formula. Nothing is uploaded: the math runs locally in your browser and the result appears as you type.
How the Currency Arbitrage Detector works
Currency Arbitrage Detector answers one question well — given the values you provide, what is the result? Enter the Rate A→B, Rate B→C, and Rate C→A, and the result panel returns the value with the full working underneath.
How to use it
- Rate A→B — one of the values the calculation builds from; the result reflects exactly what you type here.
- Rate B→C — used in the first stage of the calculation, so entering it accurately matters more than any later refinement.
- Rate C→A — the value that feeds directly into the formula — match it to the scenario you are modeling before moving on.
- The output panel in currency arbitrage detector leads with the headline result and follows with the steps behind it, so the value can be checked rather than assumed.
- Iterate. Vary the inputs one at a time; the movement in the figure shows which lever matters most for your currency arbitrage detector question.
The formula behind the result
The relationship between the inputs is fixed by the formula, and Currency Arbitrage Detector makes each substitution explicit so nothing about the figure is hidden.
Worked example: with rate a→b of 1.1, rate b→c of 0.85, rate c→a of 1.08, this currency arbitrage detector calculation returns Arbitrage: +0.98%. The same run reports Round trip: A→B→C→A = ×1.0098.
The steps it follows:
- A→B at 1.1
- B→C at 0.85
- C→A at 1.08
- Product = 1.1 × 0.85 × 1.08 = 1.0098
Substitute your own values and the same steps produce your answer — that is the point of a calculator that shows its working.
Understanding the result
The arbitrage is the headline answer; the supporting figures beneath it and the step list give the surrounding context needed to judge it.
Where it helps
Currency Arbitrage Detector fits planning and checking: day-to-day planning, comparing scenarios side by side, and double-checking a figure before acting on it, or any moment when the figure needs to be right the first time.
Common mistakes
Rounding intermediate values by hand introduces error Currency Arbitrage Detector does not have; it keeps full precision internally, so trust the displayed arbitrage over mental arithmetic.
Tip: Run Currency Arbitrage Detector twice with deliberately low and high inputs; the spread tells you how sensitive the result is, which a single run never shows.
Assumptions and limitations
Results from Currency Arbitrage Detector are estimates computed from the values entered; real-world outcomes can differ when fees, taxes, or conditions not modeled here apply.
Why use this calculator
Because the page doubles as documentation: Currency Arbitrage Detector puts the formula, a worked example, and the assumptions right beside the calculator.
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Frequently Asked Questions
What does the tool calculate?
Currency Arbitrage Detector is built for currency arbitrage detector questions that need a defensible number: the working is always visible, the inputs accept your own values, and the output updates as you type. Because the working is visible: Currency Arbitrage Detector shows each operation behind the figure in the steps panel, so you can verify the result instead of trusting a black box.
How is the result calculated?
The first steps are a→b at 1.1, then b→c at 0.85. Currency Arbitrage Detector lists every intermediate step in the result panel, so the derivation of the result can be checked line by line.
What do I need to use the Currency Arbitrage Detector?
The Rate A→B, Rate B→C, and Rate C→A it asks for, or the page defaults if you just want to see the calculation work. Each input maps directly to the formula, and changing any one of them recalculates the arbitrage instantly.
What does the result from the tool mean?
The main number the currency arbitrage detector returns is the arbitrage for your exact inputs, and the supporting figures and step list give it context. The model behind Currency Arbitrage Detector covers the standard case; special cases, edge values, or jurisdiction-specific rules may need manual adjustment.
When is the page most useful?
Typical uses for Currency Arbitrage Detector include day-to-day planning, comparing scenarios side by side, and double-checking a figure before acting on it — anywhere the figure needs to be defensible rather than guessed. Run Currency Arbitrage Detector twice with deliberately low and high inputs; the spread tells you how sensitive the figure is, which a single run never shows.