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Currency Conversion Markup Calculator

Work out currency conversion markup instantly with clear inputs, formula shown and shareable results.

About Currency Conversion Markup Calculator

The mid-market rate is the true midpoint between buy and sell; anything away from it is the provider's margin. Expressing that gap as a percentage of the mid rate gives the real cost of conversion, whatever fee is quoted separately.

Formula

FX markup

Markup % = (offered rate - mid rate) / mid rate × 100

Worked example

With the default values below, Currency Conversion Markup Calculator returns Markup Over The Mid-Market Rate of 2.0433%. Change any input above and every figure here is recalculated in your browser.

Inputs used

Amount Convertedminimum 0
300,000
Interbank Mid-Market Rateaccepts 0–100,000
83.2
Rate You Were Offeredaccepts 0–100,000
84.9

Results

Markup Over The Mid-Market Rate
2.0433%
Cost Of The Markup
$6,129.81
Gap In Rate Terms
1.7000
Markup Cost Per 100,000 Converted
$2,043.27

Step by step

  1. 1Values used
  2. 2FX markup
  3. 3Markup Over The Mid-Market Rate= 2.0433
  4. 4Cost Of The Markup= 6,129.81
  5. 5Gap In Rate Terms= 1.7000
  6. 6Markup Cost Per 100,000 Converted= 2,043.27

Assumptions and limits

  • The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 4 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
  • Figures are estimates based on the inputs given. Bank charges, regulatory minima and market rates change and differ between institutions and jurisdictions. This is not financial advice — confirm with your bank or treasury policy.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Figures are estimates based on the inputs given. Bank charges, regulatory minima and market rates change and differ between institutions and jurisdictions. This is not financial advice — confirm with your bank or treasury policy.

Frequently Asked Questions

What is a reasonable markup?

Under 0.5% is competitive for major currencies; airport and card conversions can exceed 4%.

Why quote against the mid rate?

Because it is the only neutral reference — the provider's own buy and sell rates already contain the margin.

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