Kairon AIStock Average Calculator
Free stock average calculator: add up to five buys to get your average cost per share, total shares and the break-even price after averaging down.
Stock Average Calculator
Bought the same stock more than once? Enter each purchase to get your average cost per share and the price you need to get back to even.
Averaging down lowers your average cost but increases the size of a position that is currently going against you. Decide on a maximum position size before you add.
Background and worked examples: How to calculate your average cost per share →
More calculators
Position Size Calculator
Free position size calculator: enter account size, risk per trade, entry and stop-loss to get the number of shares, position value and money at risk.
Risk/Reward Calculator
Calculate the risk/reward ratio of a trade and the minimum win rate you need to break even. Works for long and short positions.
Stock Profit Calculator
Calculate the profit or loss on a stock trade including fees, the return in percent and the annualized return based on holding days.
Get a second opinion on your next stock
Five AI agents look at technicals, fundamentals, news and sentiment, then a bull and a bear argue it out. A free account includes one compact AI analysis every month.