CoinucationPosition size calculator
Decide how much of your account you are willing to lose on one trade, set your entry and stop-loss, and the calculator returns the number of units and notional size that match.
The formula
Position size (units) = (account x risk %) / |entry - stop|. The notional value is units x entry. If notional exceeds your account, you would need leverage to take the full position; many traders reduce size instead.
Choosing a risk percentage
Common rules are 0.5% to 2% of the account per trade. At 1%, ten losing trades in a row cost about 10% of the account, which is recoverable. At 10%, the same streak loses two thirds.
Stop placement matters more than size
A tight stop lets you hold a larger position for the same risk, but gets hit by normal volatility more often. Crypto moves 3 to 5% on an ordinary day, so stops inside that range on a daily timeframe are often noise.
Frequently asked questions
What is position sizing?
Deciding how many units to buy so that a losing trade costs a predetermined fraction of your capital, rather than picking a round number of coins.
Should I include fees?
Fees slightly increase the loss at the stop. For precision, reduce the risk percentage a little or widen the stop distance by the round-trip fee.
What if leverage needed is above 1x?
Either use margin (with its liquidation risk) or accept a smaller position. The calculator flags when the position exceeds the account.
This calculator is for information only and is not financial, tax or investment advice. Results depend on the inputs you enter and on market data that can be delayed. Ownership and conflict disclosure.