Averaging Down Calculator
Average price calculator for stock & crypto investors. Instantly calculate your new average cost when you buy more.
Buy more below your average price to lower your cost basis.
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Frequently Asked Questions
The Complete Guide to Averaging Down & Up
New average = (old average × old quantity + new price × new quantity) ÷ (old quantity + new quantity)
What is averaging down?
Averaging down is the strategy of buying more of a holding at a lower price after its value has fallen below your average purchase price. For example, if you buy 100 shares at $50 and the price drops to $40, buying another 50 shares lowers your average cost to about $46.67. The biggest advantage is that a lower average cost means the price does not have to recover all the way to your original entry for you to reduce losses or return to profit.
Benefits of averaging down
The core benefit of averaging down is reducing your average purchase price, which shrinks the rebound needed to recover your losses. For high-quality companies or assets you expect to rise over the long term, a temporary dip can be an opportunity to accumulate more at a cheaper price. From a dollar-cost averaging (DCA) perspective—buying fixed amounts at regular intervals—it also helps smooth out short-term volatility.
Risks of averaging down
However, averaging down is a double-edged sword. If the decline is driven by a fundamental problem—deteriorating earnings or a structural shift in the industry—rather than a temporary correction, adding more only deepens your losses. This is the classic danger of "catching a falling knife," and concentrating too much capital in a single position increases portfolio risk. Always average down within the limits of the asset's fundamentals, your own investing rules, and a loss you can afford to take.
What averaging up means
Averaging up (pyramiding) is the opposite of averaging down: you buy more at a higher price while the asset is climbing. Your average cost rises, but the goal is to ride a clear uptrend and grow the size of your winning position. It is popular among trend-following investors and aligns with the principle of "let your winners run, cut your losers short." Because chasing near the top exposes you to larger losses if the trend reverses, it is important to set stop-loss rules alongside it.
The average price formula
Whether you average down or up, the average price is calculated with the same formula. Simply put, your average price is the total amount invested divided by the total quantity you hold. The calculator above applies this formula the moment you type, automatically showing your new average price, total investment, total quantity, and the percentage change in your average price.
Things to watch out for
Averaging down and up are not inherently good or bad—they are tools whose effectiveness depends on market conditions, the nature of the asset, and your own discipline. Before buying more, always check: (1) what is actually driving the price move, (2) whether a single position is becoming too large a share of your portfolio, and (3) whether your stop-loss and target levels are clear. This calculator also excludes trading fees and taxes, so real fills may differ slightly. It is provided for informational purposes only; every investment decision and its outcome is your own responsibility.