Stock Average Price Calculator
The Stock Average Price Calculator helps investors calculate the average buying price of a stock after making multiple purchases at different prices. Instead of calculating each purchase manually, you can enter the number of shares and purchase price for each transaction and instantly find your total quantity, total investment and average stock price.
This calculator is especially useful when you buy additional shares after the stock price changes. It helps you understand how a new purchase changes your overall average cost per share.
Stock Average Price Calculator
Enter the quantity of shares and purchase price for each transaction. You can use up to three purchase entries in the calculator. The result section shows the total number of shares, total amount invested and weighted average purchase price.
Calculator Inputs
- Purchase 1 Quantity – Number of shares purchased in the first transaction.
- Purchase 1 Price – Price paid per share in the first transaction.
- Purchase 2 Quantity – Number of shares purchased in the second transaction.
- Purchase 2 Price – Price paid per share in the second transaction.
- Purchase 3 Quantity – Number of shares purchased in the third transaction.
- Purchase 3 Price – Price paid per share in the third transaction.
Calculator Results
- Total Shares – Total quantity purchased across all entered transactions.
- Total Investment – Total money invested across all entered transactions.
- Average Buy Price – Weighted average price paid per share.
Stock Average Price Formula
The average stock price is calculated using a weighted average. Each purchase contributes according to the number of shares bought.
Average Price = Total Investment ÷ Total Quantity
Total Investment = (Quantity 1 × Price 1) + (Quantity 2 × Price 2) + (Quantity 3 × Price 3)
Total Quantity = Quantity 1 + Quantity 2 + Quantity 3
Stock Average Price Example
Suppose you buy 100 shares of a stock at ₹200 per share. Later, you buy another 50 shares at ₹160 per share.
First purchase: 100 × ₹200 = ₹20,000
Second purchase: 50 × ₹160 = ₹8,000
Total investment = ₹28,000
Total shares = 150
Average price = ₹28,000 ÷ 150 = ₹186.67 per share
Therefore, after both purchases, the combined average purchase price is approximately ₹186.67 per share.
How to Use the Stock Average Price Calculator
- Enter the quantity of shares purchased in the first transaction.
- Enter the purchase price per share.
- Add the quantity and price for the second and third transactions when applicable.
- Review the total shares and total investment shown in the results section.
- Check the calculated average buy price to understand your combined cost per share.
Why Calculate the Average Stock Price?
When an investor purchases the same stock at different prices, the portfolio cost cannot be understood from the latest purchase price alone. The weighted average price combines all purchases and provides a single average cost per share.
- Track the combined cost of multiple purchases.
- Understand how additional purchases affect your average price.
- Estimate the price level at which your holdings may reach the original average cost, before considering taxes, brokerage, charges and other costs.
- Compare different purchase scenarios quickly.
- Reduce manual calculation errors.
Important Note
The calculator uses the quantity and purchase prices entered by the user. Brokerage, taxes, transaction charges, corporate actions, dividends and other costs are not included unless they are separately incorporated into the inputs. The calculated average price is therefore an estimate of the weighted purchase price based on the entered transactions.
FAQs about Stock Average Price Calculator
What is a stock average price?
Stock average price is the weighted average cost per share across multiple purchases of the same stock at different prices.
How is the average stock price calculated?
Divide the total amount invested across all purchases by the total number of shares purchased.
Does buying more shares at a lower price reduce the average price?
Yes. When additional shares are purchased below the existing average price, the combined weighted average generally moves lower.
Does buying more shares at a higher price increase the average price?
Yes. A purchase above the existing average price generally increases the combined weighted average.
Can I calculate the average price for multiple purchases?
Yes. The calculator can combine multiple purchase transactions and calculate the weighted average based on quantity and price.
Does the calculator include brokerage and taxes?
The basic calculator calculates the weighted purchase price from quantity and price. Brokerage, taxes and other transaction costs should be considered separately unless they are included in the purchase cost.
Can I use this calculator for stocks listed in India?
Yes. You can enter Indian stock quantities and prices in rupees. The calculation itself is based on quantity and price and is not limited to a particular exchange.
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