GOALS, RETURNS, AND HOUSEHOLD RESERVES
Stock Average Calculator
Calculate total shares, total cost, and weighted average purchase price across two stock or fund transactions.
Review your result
Your result
Ready when you are.
Enter your values and choose Calculate. Your inputs stay on this device.
How it works
Average price = (quantity 1 × price 1 + quantity 2 × price 2) ÷ total quantity.
Assumptions and limits
Brokerage, taxes, charges, corporate actions, partial sales, and realised gains or losses are excluded.
About this calculator
This weighted-average tool shows how a second purchase changes the cost basis without implying that averaging down is a good strategy.
What this tool helps you check
Calculate weighted average purchase price without implying that buying or averaging down is suitable.
How to use it
- Review the formula and assumptions shown for this stock average calculator.
- Enter quantity and executed price for both purchases.
- Calculate and review total cost and weighted average price.
- Use broker contract notes for tax cost basis and do not treat the result as a buy recommendation.
Source and update
Last reviewed: 2026-08-22
SEBI Investor — calculators and investor educationFrequently asked questions
What does this stock average calculator calculate?
This weighted-average tool shows how a second purchase changes the cost basis without implying that averaging down is a good strategy.
How should I interpret the result?
Review total cost and weighted average price. The result changes whenever an input or assumption changes.
Is the result official or guaranteed?
Use broker contract notes for tax cost basis and do not treat the result as a buy recommendation.
Keep exploring