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Stock Average Cost Calculator: know what your shares really cost

Your true weighted average cost across every buy, the next buy simulated before you commit, and whether averaging down is actually working.

QR code that opens Average Cost in your phone's app storeScan with your phone
Stock Average Cost Calculator with a new average cost for a planned buy
Stock Average Cost Calculator list of positions with average costs
Stock Average Cost Calculator dashboard of open positions

From one calculation to every position

It remembers each buy you log, and quantifies your strategy after every trade.

Stock Average Cost Calculator with a new average cost for a planned buyStock Average Cost Calculator list of positions with average costsStock Average Cost Calculator dashboard of open positions

Questions about Average Cost

What is a weighted average cost?

What each share cost you on average across all your buys: the total paid divided by the total shares. The app recalculates it as you type.

Can I test a buy before I make it?

Yes. Enter a hypothetical buy price and compare share counts side by side, then save the one you like as a planned buy.

Stock Average Cost Calculator is a calculation tool. Nothing in the app is financial advice.

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