Position Size Calculator
Set what you are willing to lose and where your stop sits. It returns the size that fits.
Position size
0.40 lots
- Risk amount
- $100.00
- Pip value per lot
- $10.00
- Loss at stop
- $100.00
- Units
- 40,000
Get an AI read on the setup before you size it.
See the AI readAlphaMind reads the market with its own models and explains what it sees. These calculators are the arithmetic around that. This page runs in your browser. Nothing is sent anywhere.
The maths
Risk amount = balance x risk % Pip value = pip size x contract size x quote-to-USD rate Lots = risk amount / (stop in pips x pip value)
Size follows from the stop, not the other way round. Widen the stop on the same risk budget and the position has to get smaller.
Worked example
A 10,000 USD account risking 1% is 100 USD. With a 25 pip stop on EUR/USD, where one pip is 10 USD per lot, that is 0.40 lots.
What is a safe position size?
Most desks cap single-trade risk between 1% and 2% of the account. The figure that matters is the loss at your stop, not the leverage the broker allows.
Does leverage change the position size?
No. Leverage decides how much margin the position ties up. What you can lose is set by your stop and your size.
My stop is in price, not pips.
Divide the distance by the pip size. A 0.0025 stop on EUR/USD is 25 pips, and a 0.35 stop on USD/JPY is 35 pips.
