Average Price Calculator

Average up or down stocks and calculate your new average price. Share a filled result with a URL that restores the inputs automatically.

Worked example: existing quantity 100, existing avg price ₹500, new quantity 50, new price ₹450. Change any input to recalculate.

Total Quantity
150 shares
Total Investment
₹72,500.00
Average Price
₹483.33
New Investment
₹22,500.00

This calculator is for educational estimates only. Verify assumptions before making trading, investing, tax, or financial planning decisions.

What is Stock Averaging Down?

Averaging down means buying more shares of a stock at a lower price than your original purchase, reducing your overall average cost per share. This strategy is used by investors who remain confident in the stock and want to lower the breakeven price. Averaging up is the reverse — buying more as the price rises to add to a winning position.

How to Calculate Average Stock Price

Enter your existing quantity and average purchase price, then enter the new quantity and price you plan to buy at. The calculator computes your new blended average price across all holdings.

New Average Price = (Old Qty × Old Price + New Qty × New Price) ÷ (Old Qty + New Qty)

Frequently Asked Questions

  • Averaging down works well for fundamentally strong stocks during temporary corrections. It is risky for stocks in a structural downtrend or with deteriorating fundamentals. Always reassess why the stock is falling before averaging down.
  • Most disciplined traders average down only once or twice, with pre-defined price levels and quantity limits. Averaging down indefinitely without position limits is a common cause of large losses. Keep averaging limited to a pre-set maximum position size.
  • Yes. The same formula applies to mutual fund units. Enter your existing unit count and average NAV as the first row, and new units and purchase NAV as the second row to get your blended average NAV.