Stock Average Calculator
Find the average buy price of a stock across multiple purchases. Add each buy order with its quantity and price to get your true average cost.
Your Buy Orders
Add the quantity and price for each time you bought the stock.
Total Shares
250
Total Investment
โน1.13 L
Average Buy Price
โน452.00
The average price is your total cost divided by total shares held. Buying more shares when the price falls lowers your average; buying when it rises raises it.
What is stock averaging?
Stock averaging means buying the same stock at multiple prices over time, ending up with an average buy price somewhere between the highest and lowest you paid. The average price is the weighted average across all your trades. Most retail investors end up averaging without planning - they bought at โน500, the stock fell to โน350, they bought again. The new average is below โน500 but above โน350. This calculator shows that exact number, plus the breakeven price after brokerage.
How to use the Stock Average Calculator
- Add your first purchase. Quantity and price per share for the first lot.
- Add each additional buy. Enter quantity and price for each subsequent purchase.
- Optional: include brokerage and charges. For a true breakeven price after all costs.
- Read the average buy price. The weighted-average price you paid across all lots.
- Check current P&L. Enter the current market price to see your total gain or loss.
Formula and method
Weighted average. Larger lots influence the average more than smaller ones. The result is the price at which selling everything would mean breaking even (ignoring brokerage and tax).
When to use stock averaging
- To compute your true cost. Brokerage apps show the average; this calculator lets you verify it.
- To plan averaging down. Decide how much more to buy to bring the average to a target price.
- To set a stop-loss. Knowing your average helps decide where to exit.
- To gauge breakeven. Include brokerage to see the price at which you start profiting.
- Be careful with conviction. Averaging down a weak business multiplies the mistake; only do it when fundamentals support the price.