FX mark-up calculator

Most UK apps don’t show their currency fee as a fee: it’s built into the exchange rate. Enter the rate your app offers and today’s mid-market rate to see what the conversion really costs you.

Total cost of this conversion£0

Hidden mark-up in the rate
0%
You receive
0
At the mid-market rate you’d get
0
Cost as % of amount
0%

A 1.5% mark-up on £5,000 costs £75 each way, so buying and later selling a US share costs about £150 in currency fees before any dealing charge. Read our guide to the UK’s cheapest share trading apps for FX rates.

Mid-market rates move all day, so check both rates at the same moment. This calculator is for comparison only and is not financial advice.