Stock average calculator
Find the weighted average price of shares bought at different prices. Optionally add estimated purchase charges for your broker and plan.
Your purchases
Enter purchases of the same stock that you still hold. Each row is one completed NSE delivery buy order; split fills from the same order should be combined. Results update as you type.
Your average share price
150 shares. Average before charges: ₹466.67 per share.
- Share purchase value
- ₹70,000.00
- Average before charges
- ₹466.67
- Charges included (no broker selected)
- ₹0.00
- Total purchase cost
- ₹70,000.00
Purchase charges include the buy leg only. No sell brokerage, sell-side taxes or DP sell charge. AMC, account opening, subscriptions, financing and future selling costs are excluded. Totals use unrounded estimates; displayed amounts are rounded to paise.
How to calculate average share price
Multiply each purchase’s shares by its price. Add those purchase values and divide by total shares. Larger purchases carry more weight. With a broker selected, add each buy order’s estimated brokerage and taxes before dividing by the same share count.
Worked example
Buy 100 shares at ₹500 and another 50 at ₹400: purchase value is ₹50,000 + ₹20,000 = ₹70,000. Total shares are 150. ₹70,000 ÷ 150 gives an average of ₹466.67 per share before charges. Simply averaging ₹500 and ₹400 would ignore the different quantities.
Reference: Zerodha’s quantity-weighted buy-average explanation (new tab), read 10 October 2026. This tool models entered purchases only; it does not reconstruct your broker’s holdings.
Keep sales, dividends, splits, bonuses, transfers and other corporate actions outside this calculation. It is a purchase-cost estimate, not a capital-gains tax calculation or a recommendation to buy more. Contract-note rounding and account-specific tariffs can change actual charges.
Stock average calculator FAQ
Add the value of every purchase (shares multiplied by price per share), then divide by the total number of shares. This is a quantity-weighted average, so a larger purchase contributes more than a smaller one.
Yes. Select a broker and pricing plan to add estimated NSE delivery buy-side charges to each purchase before dividing by total shares. The tool includes purchase brokerage, delivery STT, exchange charges, SEBI charges, stamp duty and GST on applicable fees. It excludes sell brokerage, DP sell charges, AMC, account opening, subscriptions and financing.
Each row represents one completed buy order. Combine fills from the same order using their quantity-weighted price, because per-order brokerage caps or minimums apply to an order rather than each fill. Separate buy orders should remain separate rows.
A lower-priced purchase can reduce the weighted average price, but it also increases the amount invested. The calculation does not predict future prices or recommend buying more, and it does not include future selling charges.
This tool estimates the cost of the purchases you enter. It does not account for sales, FIFO tax matching, dividends, transfers, splits, bonuses or other corporate actions. Use your broker’s records and the applicable tax treatment for capital-gains reporting.