Calculator
Size the trade from the pounds at risk, not the lot you fancy.
Lot size = money you can lose ÷ (stop-loss pips × pip value). Pip value uses today’s ECB reference mid from Frankfurter, proxied by this site. Not a live bid/offer and not a broker ticket.
Formula · Position size
Lots = risk money ÷ (stop pips × pip value)
1.00
Standard lot = 100,000 of the base currency
0.10
Mini lot. Ten times smaller risk for the same stop
0.01
Micro lot. Use it while you are still learning the fill
ECB
Mids from Frankfurter. Not your provider’s spread
Interactive
Position size & risk
Change a field and the lots update. Pair pip conventions: 0.0001 on most majors, 0.01 on JPY pairs.
- Money at risk
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- Pip value / standard lot
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- Suggested lots
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- Rate used
- Loading ECB mid…
Educational estimate. Your fill includes spread and slippage — see the glossary.