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Average Buy Calculator
Calculate a weighted average price across two purchases.
YOUR INPUTS
Enter trade details
Values are editable. Change defaults to match your scenario.
Estimated result
Update an input to calculate.
QUICK ANSWERS
Frequently asked questions
How is average buy price calculated?
Weighted average price = (first price × first quantity + second price × second quantity) ÷ total quantity.
Does the result include brokerage or taxes?
No. It calculates the weighted purchase price only and excludes charges.
Can I use it for more than two purchases?
Combine earlier purchases into one total quantity and average price, then enter that combined figure as the first purchase.