Finance & investing · NUMORA
Stock Average Calculator
Cost basis after multiple buys, plus breakeven.
Open interactive calculatorHow to use
Weighted average from each lot.
Formula
Avg = Σ(qty×price) / Σ qty
FAQ
Is this Stock Average calculator accurate?
The formula and assumptions are shown on the page, and the engine is covered by audit tests. Results are for reference — not financial or medical advice.
Do I need an account?
No. Calculations run in your browser. Recents can stay on this device.
What inputs do I need?
Weighted average from each lot.
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