Position size calculator
Size every trade so a stop loss costs exactly what you decided to risk.
- 100% free
- No sign-up
- Runs in your browser
How to use Position size calculator
- Enter your account and risk
- Set entry and stop
- Read your position size
Your account
Your trade
A stop below the entry is a long; a stop above it is a short.
Position size
Enter your balance, the risk, the entry and the stop loss to see your position size.
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How to use Position size calculator
Enter your account and risk
Type your account balance and how much of it you’re willing to lose on this trade, such as 1%.
Set entry and stop
Enter the entry price and your stop loss. A stop below the entry is a long; above it, a short. A take-profit price is optional.
Read your position size
See how many coins to buy, what the position is worth, the leverage it needs and your reward-to-risk ratio.
Why use Utils365
Risk first
The size comes from what you’re willing to lose, not from a guess, so one bad trade never sinks the account.
Fees counted
Add your trading fee and it’s included in the loss at the stop, so the risk is what you actually lose.
Reward to risk
Add a target to see the reward-to-risk ratio and the profit if it’s hit, after fees.
Any market
Works for spot, futures, stocks and forex quoted in price: the maths is the same.
Frequently asked questions
How do I calculate position size?
Divide the money you’re willing to lose by the loss per coin at the stop. Risking 100 with a stop 5 below the entry means 100 ÷ 5 = 20 coins.
What is the 1% rule?
Never risk more than 1% of your account on one trade. Ten losses in a row then cost about 10%, which you can recover from.
What is a good reward-to-risk ratio?
Many traders want at least 1:2, a possible profit twice the risk. Then you can be right less than half the time and still make money.
Why does it show leverage?
When a position is worth more than your balance, you need leverage to open it. The risk is still set by your stop, but check the liquidation price stays beyond the stop.
Does it work for shorts?
Yes. Put the stop above the entry and the calculator treats it as a short, with the target below the entry.
Is this financial advice?
No. It’s a calculator for sizing trades you’ve already decided on. Prices can gap past a stop, so losses can be bigger.