The average down calculator helps you determine the exact quantity to purchase at a lower price to reduce your average cost basis on an existing position. Enter your initial purchase details and target average price to see how many additional units you need to buy. Works for stocks and cryptocurrency. Dollar-cost averaging (DCA) is a proven strategy for long-term investors, but it must be applied carefully — averaging down on fundamentally weak assets can compound losses rather than reduce them.
This free average down calculator works directly in your browser — no download, no registration, and no delay. All calculations are performed client-side, so your trading data is never transmitted to a server.
The formula used is: New Average = (Shares1 × Price1 + Shares2 × Price2) ÷ (Shares1 + Shares2). This is the same formula used by professional traders and institutional risk managers worldwide.
Supported asset classes include: Stocks, Crypto. Each asset class applies the correct unit conventions so results are always accurate regardless of the market you are trading.