Risk/Reward Calculator — and the Position Size That Goes With It
Enter a plan and see what it risks, what it can make and how big to trade. It grades the plan the way CoreNova's tools do: under 1:1 it is WATCH, and a stop closer than half an ATR is flagged. It works in your browser; nothing is sent.
Frequently asked
How is the risk/reward ratio worked out?
The reward is the distance from the entry to the target; the risk is the distance from the entry to the stop. The ratio is the reward divided by the risk, written 1 : that number. An entry of 100, a stop of 96 and a target of 108 risk 4 to make 8: 1 : 2.00.
How is the position size worked out?
The money you are willing to lose (your account times the risk percent) divided by the risk per unit, rounded down so the trade never risks more than that. $10,000 at 1% is $100; with $4 of risk per share that is 25 shares.
What does the 1:1 rule mean?
On CoreNova a tool publishes a plan as LONG or SHORT only when target 1 pays at least as much as the risk to stop 1, tested at two decimals so 1.00 passes. Under that, the plan shows as WATCH: the levels stay visible for reference and nothing is sized.
Why does it ask for the ATR?
The average true range is how far a bar of that timeframe usually moves. CoreNova's tools keep the stop at least half the 14-bar ATR from the entry, so an ordinary bar does not reach it; the calculator tells you when your stop is closer than that.
Is anything I type sent anywhere?
No. The calculator works in your browser and makes no request with your numbers. It does not count fees, slippage or gaps, and it is arithmetic, not advice.
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