Average Down & DCA Calculator — Blended Cost Basis
Add multiple buys at different prices and quantities to see your weighted average cost basis and break-even price.
25.0000 units · total cost $2,200.00
How averaging down works
If you bought 10 shares at $100 then 15 shares at $80, your blended cost is (10×100 + 15×80) ÷ 25 = $88. Now the stock only needs to recover to $88 — not $100 — for you to break even on the position.
The dark side
Averaging down also means you're putting more capital into a position that's already moving against you. If the underlying thesis is wrong, you're digging a bigger hole. Dollar-cost averaging into a diversified index is one thing. Averaging down on a falling individual stock is how serious losses happen.
Setting a target
Enter a target price and the calculator shows you exactly what selling at that price would net you in $ and % terms — useful for setting exit plans before emotion takes over.
How to use the Average Down / DCA Calculator
Takes about a minute. No signup, no download, your data stays in your browser.
- 1Open the tool. Scroll up to the Average Down / DCA Calculator above — it loads instantly in your browser, no install needed.
- 2Enter your values. The fields come pre-filled with realistic defaults so you can see how it works — replace them with your own numbers.
- 3Read the result. The output updates instantly. Copy or share it — nothing is uploaded to a server, everything stays on your device.
Frequently asked questions
Common questions about the Average Down / DCA Calculator.
Is the Average Down / DCA Calculator free to use?
Yes. The Average Down / DCA Calculatoron 7BusyBoss is completely free — no signup, no paywall, no usage cap.
Do I need to sign up to use the Average Down / DCA Calculator?
No. The Average Down / DCA Calculatorworks instantly in your browser — no account needed. Signing in with Google is optional and only unlocks features like saving favorites and higher AI build limits.
Does the Average Down / DCA Calculator work on mobile?
Yes. Every tool on 7BusyBoss is mobile-responsive and works in any modern browser — Chrome, Safari, Firefox, Edge — on phones, tablets and desktops.
Is my data safe when I use the Average Down / DCA Calculator?
Yes. The Average Down / DCA Calculatorruns entirely in your browser — your inputs never leave your device unless the tool explicitly fetches public data (e.g. currency rates). We don't store the values you type.
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