Stocks Calculator
Average Purchase Price Calculator
When buying stocks or crypto in multiple tranches, the average purchase price calculator h...
Read MoreReturn on Investment (ROI) Calculator
ROI is the ratio of profit to the amount invested and is widely used to compare investment...
Read MoreAbout This Category
Two calculations cover most of what a private investor needs. The average price tells you your break-even after buying the same stock several times at different prices; return on investment tells you whether the position, plus any dividend, actually made money.
Both are arithmetic, not prediction. Averaging down lowers the break-even price but also raises the amount at risk, and a positive ROI can hide a loss in real terms if inflation or fees are larger than the return.
Frequently Asked Questions
Is the average price a weighted average?
Yes. Each purchase contributes in proportion to the amount spent, so buying twice as much at a lower price moves the average twice as far.
Should dividends count in ROI?
They should. Total return includes dividends; price return does not. A 4 % dividend on a flat share price is still a 4 % return before tax.
Does ROI account for fees and tax?
Only if you include them in the cost or subtract them from the gain. A 1 % trading fee on each side of a round trip removes roughly 2 % of the invested amount.
Calculators in This Category
Sources & last update
2026-10-19